print

attempt to fix windows atomic write
Fix agent reading and editing files over SSH (#30144 )
2025-05-08 04:10:00 +05:30 · 2025-05-08 03:44:38 +05:30 · 2025-05-07 17:07:01 +00:00 · 2025-05-07 16:49:54 +00:00 · 2025-05-07 17:33:42 +01:00 · 2025-05-07 13:24:36 -03:00
356 changed files with 19506 additions and 10256 deletions
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -162,13 +162,23 @@ jobs:
        working-directory: ./docs
        run: |
          pnpm dlx prettier@${PRETTIER_VERSION} . --check || {
-            echo "To fix, run from the root of the zed repo:"
+            echo "To fix, run from the root of the Zed repo:"
            echo "  cd docs && pnpm dlx prettier@${PRETTIER_VERSION} . --write && cd .."
            false
          }
        env:
          PRETTIER_VERSION: 3.5.0

+      - name: Prettier Check on default.json
+        run: |
+          pnpm dlx prettier@${PRETTIER_VERSION} assets/settings/default.json --check || {
+            echo "To fix, run from the root of the Zed repo:"
+            echo "  pnpm dlx prettier@${PRETTIER_VERSION} assets/settings/default.json --write"
+            false
+          }
+        env:
+          PRETTIER_VERSION: 3.5.0
+
      # To support writing comments that they will certainly be revisited.
      - name: Check for todo! and FIXME comments
        run: script/check-todos
--- a/.prettierrc
+++ b/.prettierrc
@@ -0,0 +1,3 @@
+{
+  "printWidth": 120
+}
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -62,7 +62,6 @@ dependencies = [
 "chrono",
 "client",
 "collections",
- "command_palette_hooks",
 "component",
 "context_server",
 "convert_case 0.8.0",
@@ -106,6 +105,7 @@ dependencies = [
 "rope",
 "rules_library",
 "schemars",
+ "search",
 "serde",
 "serde_json",
 "serde_json_lenient",
@@ -124,6 +124,7 @@ dependencies = [
 "time_format",
 "ui",
 "ui_input",
+ "urlencoding",
 "util",
 "uuid",
 "workspace",
@@ -483,7 +484,6 @@ dependencies = [
 "client",
 "collections",
 "command_palette_hooks",
- "context_server",
 "ctor",
 "db",
 "editor",
@@ -546,7 +546,6 @@ dependencies = [
 "collections",
 "context_server",
 "editor",
- "feature_flags",
 "fs",
 "futures 0.3.31",
 "fuzzy",
@@ -594,8 +593,8 @@ version = "0.1.0"
 dependencies = [
 "anthropic",
 "anyhow",
+ "collections",
 "deepseek",
- "feature_flags",
 "fs",
 "gpui",
 "indexmap",
@@ -607,9 +606,11 @@ dependencies = [
 "paths",
 "schemars",
 "serde",
+ "serde_json",
 "serde_json_lenient",
 "settings",
 "workspace-hack",
+ "zed_llm_client",
 ]

 [[package]]
@@ -735,7 +736,10 @@ dependencies = [
 "language_model",
 "language_models",
 "linkme",
+ "log",
 "open",
+ "paths",
+ "portable-pty",
 "pretty_assertions",
 "project",
 "rand 0.8.5",
@@ -753,14 +757,17 @@ dependencies = [
 "tempfile",
 "terminal",
 "terminal_view",
+ "theme",
 "tree-sitter-rust",
 "ui",
 "unindent",
 "util",
 "web_search",
+ "which 6.0.3",
 "workspace",
 "workspace-hack",
 "zed_llm_client",
+ "zlog",
 ]

 [[package]]
@@ -2997,6 +3004,7 @@ dependencies = [
 "anyhow",
 "assistant",
 "assistant_context_editor",
+ "assistant_settings",
 "assistant_slash_command",
 "assistant_tool",
 "async-stripe",
@@ -3230,6 +3238,7 @@ dependencies = [
 "gpui",
 "linkme",
 "parking_lot",
+ "strum 0.27.1",
 "theme",
 "workspace-hack",
 ]
@@ -3245,6 +3254,7 @@ dependencies = [
 "collections",
 "component",
 "db",
+ "futures 0.3.31",
 "gpui",
 "languages",
 "log",
@@ -3254,6 +3264,7 @@ dependencies = [
 "serde",
 "ui",
 "ui_input",
+ "util",
 "workspace",
 "workspace-hack",
 ]
@@ -3323,40 +3334,19 @@ name = "context_server"
 version = "0.1.0"
 dependencies = [
 "anyhow",
- "assistant_tool",
 "async-trait",
 "collections",
- "command_palette_hooks",
- "context_server_settings",
- "extension",
 "futures 0.3.31",
 "gpui",
- "icons",
- "language_model",
 "log",
 "parking_lot",
 "postage",
- "project",
- "serde",
- "serde_json",
- "settings",
- "smol",
- "url",
- "util",
- "workspace-hack",
-]
-
-[[package]]
-name = "context_server_settings"
-version = "0.1.0"
-dependencies = [
- "anyhow",
- "collections",
- "gpui",
 "schemars",
 "serde",
 "serde_json",
- "settings",
+ "smol",
+ "url",
+ "util",
 "workspace-hack",
 ]

@@ -3990,7 +3980,7 @@ version = "3.4.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "697b5419f348fd5ae2478e8018cb016c00a5881c7f46c717de98ffd135a5651c"
 dependencies = [
- "nix",
+ "nix 0.29.0",
 "windows-sys 0.59.0",
 ]

@@ -4078,7 +4068,6 @@ dependencies = [
 "http_client",
 "language",
 "log",
- "lsp-types",
 "node_runtime",
 "parking_lot",
 "paths",
@@ -4111,9 +4100,9 @@ dependencies = [
 "anyhow",
 "async-trait",
 "dap",
+ "futures 0.3.31",
 "gpui",
 "language",
- "lsp-types",
 "paths",
 "serde",
 "serde_json",
@@ -4258,6 +4247,7 @@ dependencies = [
 "collections",
 "command_palette_hooks",
 "dap",
+ "dap_adapters",
 "db",
 "debugger_tools",
 "editor",
@@ -5014,6 +5004,7 @@ version = "0.1.0"
 dependencies = [
 "agent",
 "anyhow",
+ "assistant_settings",
 "assistant_tool",
 "assistant_tools",
 "async-trait",
@@ -5023,7 +5014,6 @@ dependencies = [
 "clap",
 "client",
 "collections",
- "context_server",
 "dirs 4.0.0",
 "dotenv",
 "env_logger 0.11.8",
@@ -5176,7 +5166,6 @@ dependencies = [
 "async-trait",
 "client",
 "collections",
- "context_server_settings",
 "ctor",
 "env_logger 0.11.8",
 "extension",
@@ -7309,6 +7298,7 @@ dependencies = [
 "lsp",
 "paths",
 "project",
+ "proto",
 "regex",
 "serde_json",
 "settings",
@@ -7316,6 +7306,7 @@ dependencies = [
 "telemetry",
 "theme",
 "ui",
+ "util",
 "workspace",
 "workspace-hack",
 "zed_actions",
@@ -7805,6 +7796,7 @@ dependencies = [
 "tree-sitter-html",
 "tree-sitter-json",
 "tree-sitter-md",
+ "tree-sitter-python",
 "tree-sitter-ruby",
 "tree-sitter-rust",
 "tree-sitter-typescript",
@@ -7912,6 +7904,7 @@ dependencies = [
 "partial-json-fixer",
 "project",
 "proto",
+ "release_channel",
 "schemars",
 "serde",
 "serde_json",
@@ -7992,6 +7985,7 @@ dependencies = [
 "log",
 "lsp",
 "node_runtime",
+ "parking_lot",
 "paths",
 "pet",
 "pet-conda",
@@ -9074,6 +9068,18 @@ version = "1.0.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "650eef8c711430f1a879fdd01d4745a7deea475becfb90269c06775983bbf086"

+[[package]]
+name = "nix"
+version = "0.28.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ab2156c4fce2f8df6c499cc1c763e4394b7482525bf2a9701c9d79d215f519e4"
+dependencies = [
+ "bitflags 2.9.0",
+ "cfg-if",
+ "cfg_aliases 0.1.1",
+ "libc",
+]
+
 [[package]]
 name = "nix"
 version = "0.29.0"
@@ -10897,6 +10903,27 @@ dependencies = [
 "portable-atomic",
 ]

+[[package]]
+name = "portable-pty"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b4a596a2b3d2752d94f51fac2d4a96737b8705dddd311a32b9af47211f08671e"
+dependencies = [
+ "anyhow",
+ "bitflags 1.3.2",
+ "downcast-rs",
+ "filedescriptor",
+ "lazy_static",
+ "libc",
+ "log",
+ "nix 0.28.0",
+ "serial2",
+ "shared_library",
+ "shell-words",
+ "winapi",
+ "winreg 0.10.1",
+]
+
 [[package]]
 name = "postage"
 version = "0.5.0"
@@ -11072,6 +11099,7 @@ dependencies = [
 "client",
 "clock",
 "collections",
+ "context_server",
 "dap",
 "dap_adapters",
 "env_logger 0.11.8",
@@ -13308,6 +13336,17 @@ dependencies = [
 "serde",
 ]

+[[package]]
+name = "serial2"
+version = "0.2.29"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c7d1d08630509d69f90eff4afcd02c3bd974d979225cbd815ff5942351b14375"
+dependencies = [
+ "cfg-if",
+ "libc",
+ "winapi",
+]
+
 [[package]]
 name = "session"
 version = "0.1.0"
@@ -13408,6 +13447,16 @@ dependencies = [
 "lazy_static",
 ]

+[[package]]
+name = "shared_library"
+version = "0.1.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5a9e7e0f2bfae24d8a5b5a66c5b257a83c7412304311512a0c054cd5e619da11"
+dependencies = [
+ "lazy_static",
+ "libc",
+]
+
 [[package]]
 name = "shell-words"
 version = "1.1.0"
@@ -14700,6 +14749,7 @@ dependencies = [
 "log",
 "project",
 "rand 0.8.5",
+ "regex",
 "schemars",
 "search",
 "serde",
@@ -15036,7 +15086,6 @@ dependencies = [
 "client",
 "collections",
 "db",
- "feature_flags",
 "gpui",
 "http_client",
 "notifications",
@@ -17762,6 +17811,15 @@ dependencies = [
 "memchr",
 ]

+[[package]]
+name = "winreg"
+version = "0.10.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "80d0f4e272c85def139476380b12f9ac60926689dd2e01d4923222f40580869d"
+dependencies = [
+ "winapi",
+]
+
 [[package]]
 name = "winreg"
 version = "0.50.0"
@@ -18100,6 +18158,7 @@ dependencies = [
 "itertools 0.14.0",
 "language",
 "log",
+ "menu",
 "node_runtime",
 "parking_lot",
 "postage",
@@ -18214,7 +18273,7 @@ dependencies = [
 "miniz_oxide",
 "mio",
 "naga",
- "nix",
+ "nix 0.29.0",
 "nom",
 "num-bigint",
 "num-bigint-dig",
@@ -18591,7 +18650,7 @@ dependencies = [
 "futures-core",
 "futures-lite 2.6.0",
 "hex",
- "nix",
+ "nix 0.29.0",
 "ordered-stream",
 "serde",
 "serde_repr",
@@ -18635,7 +18694,7 @@ dependencies = [

 [[package]]
 name = "zed"
-version = "0.186.0"
+version = "0.187.0"
 dependencies = [
 "activity_indicator",
 "agent",
@@ -18704,7 +18763,7 @@ dependencies = [
 "menu",
 "migrator",
 "mimalloc",
- "nix",
+ "nix 0.29.0",
 "node_runtime",
 "notifications",
 "outline",
@@ -18825,9 +18884,9 @@ dependencies = [

 [[package]]
 name = "zed_llm_client"
-version = "0.7.4"
+version = "0.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2adf9bc80def4ec93c190f06eb78111865edc2576019a9753eaef6fd7bc3b72c"
+checksum = "a23b2fd00776b0c55072f389654910ceb501eb0083d7f78905ab0e5cc86949ec"
 dependencies = [
 "anyhow",
 "serde",
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -34,7 +34,6 @@ members = [
    "crates/component",
    "crates/component_preview",
    "crates/context_server",
-    "crates/context_server_settings",
    "crates/copilot",
    "crates/credentials_provider",
    "crates/dap",
@@ -243,7 +242,6 @@ command_palette_hooks = { path = "crates/command_palette_hooks" }
 component = { path = "crates/component" }
 component_preview = { path = "crates/component_preview" }
 context_server = { path = "crates/context_server" }
-context_server_settings = { path = "crates/context_server_settings" }
 copilot = { path = "crates/copilot" }
 credentials_provider = { path = "crates/credentials_provider" }
 dap = { path = "crates/dap" }
@@ -494,6 +492,7 @@ pet-fs = { git = "https://github.com/microsoft/python-environment-tools.git", re
 pet-pixi = { git = "https://github.com/microsoft/python-environment-tools.git", rev = "845945b830297a50de0e24020b980a65e4820559" }
 pet-poetry = { git = "https://github.com/microsoft/python-environment-tools.git", rev = "845945b830297a50de0e24020b980a65e4820559" }
 pet-reporter = { git = "https://github.com/microsoft/python-environment-tools.git", rev = "845945b830297a50de0e24020b980a65e4820559" }
+portable-pty = "0.9.0"
 postage = { version = "0.5", features = ["futures-traits"] }
 pretty_assertions = { version = "1.3.0", features = ["unstable"] }
 proc-macro2 = "1.0.93"
@@ -611,7 +610,7 @@ wasmtime-wasi = "29"
 which = "6.0.0"
 wit-component = "0.221"
 workspace-hack = "0.1.0"
-zed_llm_client = "0.7.4"
+zed_llm_client = "0.8.0"
 zstd = "0.11"

 [workspace.dependencies.async-stripe]
--- a/assets/icons/crosshair.svg
+++ b/assets/icons/crosshair.svg
@@ -1 +1,7 @@
-<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-crosshair-icon lucide-crosshair"><circle cx="12" cy="12" r="10"/><line x1="22" x2="18" y1="12" y2="12"/><line x1="6" x2="2" y1="12" y2="12"/><line x1="12" x2="12" y1="6" y2="2"/><line x1="12" x2="12" y1="22" y2="18"/></svg>
+<svg width="14" height="14" viewBox="0 0 14 14" fill="none" xmlns="http://www.w3.org/2000/svg">
+<path d="M7 12C9.76142 12 12 9.76142 12 7C12 4.23858 9.76142 2 7 2C4.23858 2 2 4.23858 2 7C2 9.76142 4.23858 12 7 12Z" stroke="black" stroke-width="1.33" stroke-linecap="round" stroke-linejoin="round"/>
+<path d="M11.5 7H9" stroke="black" stroke-width="1.33" stroke-linecap="round" stroke-linejoin="round"/>
+<path d="M4.5 7H2" stroke="black" stroke-width="1.33" stroke-linecap="round" stroke-linejoin="round"/>
+<path d="M7 4.5V2" stroke="black" stroke-width="1.33" stroke-linecap="round" stroke-linejoin="round"/>
+<path d="M7 11.5V9" stroke="black" stroke-width="1.33" stroke-linecap="round" stroke-linejoin="round"/>
+</svg>
--- a/assets/icons/debug_disconnect.svg
+++ b/assets/icons/debug_disconnect.svg
--- a/assets/icons/document_text.svg
+++ b/assets/icons/document_text.svg
@@ -0,0 +1,3 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 20 20" fill="currentColor" class="size-5">
+  <path fill-rule="evenodd" d="M4.5 2A1.5 1.5 0 0 0 3 3.5v13A1.5 1.5 0 0 0 4.5 18h11a1.5 1.5 0 0 0 1.5-1.5V7.621a1.5 1.5 0 0 0-.44-1.06l-4.12-4.122A1.5 1.5 0 0 0 11.378 2H4.5Zm2.25 8.5a.75.75 0 0 0 0 1.5h6.5a.75.75 0 0 0 0-1.5h-6.5Zm0 3a.75.75 0 0 0 0 1.5h6.5a.75.75 0 0 0 0-1.5h-6.5Z" clip-rule="evenodd" />
+</svg>
--- a/assets/icons/message_bubble_dashed.svg
+++ b/assets/icons/message_bubble_dashed.svg
@@ -1 +0,0 @@
-<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-message-circle-dashed-icon lucide-message-circle-dashed"><path d="M13.5 3.1c-.5 0-1-.1-1.5-.1s-1 .1-1.5.1"/><path d="M19.3 6.8a10.45 10.45 0 0 0-2.1-2.1"/><path d="M20.9 13.5c.1-.5.1-1 .1-1.5s-.1-1-.1-1.5"/><path d="M17.2 19.3a10.45 10.45 0 0 0 2.1-2.1"/><path d="M10.5 20.9c.5.1 1 .1 1.5.1s1-.1 1.5-.1"/><path d="M3.5 17.5 2 22l4.5-1.5"/><path d="M3.1 10.5c0 .5-.1 1-.1 1.5s.1 1 .1 1.5"/><path d="M6.8 4.7a10.45 10.45 0 0 0-2.1 2.1"/></svg>
--- a/assets/icons/thumbs_down.svg
+++ b/assets/icons/thumbs_down.svg
@@ -1 +1,3 @@
-<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-thumbs-down"><path d="M17 14V2"/><path d="M9 18.12 10 14H4.17a2 2 0 0 1-1.92-2.56l2.33-8A2 2 0 0 1 6.5 2H20a2 2 0 0 1 2 2v8a2 2 0 0 1-2 2h-2.76a2 2 0 0 0-1.79 1.11L12 22a3.13 3.13 0 0 1-3-3.88Z"/></svg>
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 20 20" fill="currentColor" class="size-5">
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+</svg>
--- a/assets/icons/thumbs_up.svg
+++ b/assets/icons/thumbs_up.svg
@@ -1 +1,3 @@
-<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-thumbs-up"><path d="M7 10v12"/><path d="M15 5.88 14 10h5.83a2 2 0 0 1 1.92 2.56l-2.33 8A2 2 0 0 1 17.5 22H4a2 2 0 0 1-2-2v-8a2 2 0 0 1 2-2h2.76a2 2 0 0 0 1.79-1.11L12 2a3.13 3.13 0 0 1 3 3.88Z"/></svg>
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 20 20" fill="currentColor" class="size-5">
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+</svg>
--- a/assets/images/ai_grid.svg
+++ b/assets/images/ai_grid.svg
@@ -0,0 +1,334 @@
+<svg width="400" height="92" viewBox="0 0 400 92" fill="none" xmlns="http://www.w3.org/2000/svg">
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--- a/assets/keymaps/default-linux.json
+++ b/assets/keymaps/default-linux.json
@@ -220,9 +220,9 @@
      "ctrl-shift-e": "project_panel::ToggleFocus",
      "ctrl-g": "search::SelectNextMatch",
      "ctrl-shift-g": "search::SelectPreviousMatch",
-      "ctrl-alt-/": "assistant::ToggleModelSelector",
+      "ctrl-alt-/": "agent::ToggleModelSelector",
      "ctrl-k h": "assistant::DeployHistory",
-      "ctrl-k l": "assistant::OpenRulesLibrary",
+      "ctrl-k l": "agent::OpenRulesLibrary",
      "new": "assistant::NewChat",
      "ctrl-t": "assistant::NewChat",
      "ctrl-n": "assistant::NewChat"
@@ -237,11 +237,14 @@
      "save": "workspace::Save",
      "ctrl->": "assistant::QuoteSelection",
      "ctrl-<": "assistant::InsertIntoEditor",
-      "ctrl-alt-/": "assistant::ToggleModelSelector",
      "shift-enter": "assistant::Split",
      "ctrl-r": "assistant::CycleMessageRole",
      "enter": "assistant::ConfirmCommand",
-      "alt-enter": "editor::Newline"
+      "alt-enter": "editor::Newline",
+      "ctrl-k c": "assistant::CopyCode",
+      "ctrl-g": "search::SelectNextMatch",
+      "ctrl-shift-g": "search::SelectPreviousMatch",
+      "ctrl-k l": "agent::OpenRulesLibrary"
    }
  },
  {
@@ -251,14 +254,15 @@
      "ctrl-alt-n": "agent::NewTextThread",
      "ctrl-shift-h": "agent::OpenHistory",
      "ctrl-alt-c": "agent::OpenConfiguration",
-      "ctrl-alt-p": "assistant::OpenRulesLibrary",
+      "ctrl-alt-p": "agent::OpenRulesLibrary",
      "ctrl-i": "agent::ToggleProfileSelector",
-      "ctrl-alt-/": "assistant::ToggleModelSelector",
+      "ctrl-alt-/": "agent::ToggleModelSelector",
      "ctrl-shift-a": "agent::ToggleContextPicker",
      "ctrl-shift-o": "agent::ToggleNavigationMenu",
      "ctrl-shift-i": "agent::ToggleOptionsMenu",
      "shift-escape": "agent::ExpandMessageEditor",
-      "ctrl-alt-e": "agent::RemoveAllContext"
+      "ctrl-alt-e": "agent::RemoveAllContext",
+      "ctrl-shift-e": "project_panel::ToggleFocus"
    }
  },
  {
@@ -568,7 +572,7 @@
      "ctrl-shift-e": "project_panel::ToggleFocus",
      "ctrl-shift-b": "outline_panel::ToggleFocus",
      "ctrl-shift-g": "git_panel::ToggleFocus",
-      "ctrl-?": "assistant::ToggleFocus",
+      "ctrl-?": "agent::ToggleFocus",
      "alt-save": "workspace::SaveAll",
      "ctrl-alt-s": "workspace::SaveAll",
      "ctrl-k m": "language_selector::Toggle",
--- a/assets/keymaps/default-macos.json
+++ b/assets/keymaps/default-macos.json
@@ -266,9 +266,9 @@
      "cmd-shift-e": "project_panel::ToggleFocus",
      "cmd-g": "search::SelectNextMatch",
      "cmd-shift-g": "search::SelectPreviousMatch",
-      "cmd-alt-/": "assistant::ToggleModelSelector",
+      "cmd-alt-/": "agent::ToggleModelSelector",
      "cmd-k h": "assistant::DeployHistory",
-      "cmd-k l": "assistant::OpenRulesLibrary",
+      "cmd-k l": "agent::OpenRulesLibrary",
      "cmd-t": "assistant::NewChat",
      "cmd-n": "assistant::NewChat"
    }
@@ -282,11 +282,14 @@
      "cmd-s": "workspace::Save",
      "cmd->": "assistant::QuoteSelection",
      "cmd-<": "assistant::InsertIntoEditor",
-      "cmd-alt-/": "assistant::ToggleModelSelector",
      "shift-enter": "assistant::Split",
      "ctrl-r": "assistant::CycleMessageRole",
      "enter": "assistant::ConfirmCommand",
-      "alt-enter": "editor::Newline"
+      "alt-enter": "editor::Newline",
+      "cmd-k c": "assistant::CopyCode",
+      "cmd-g": "search::SelectNextMatch",
+      "cmd-shift-g": "search::SelectPreviousMatch",
+      "cmd-k l": "agent::OpenRulesLibrary"
    }
  },
  {
@@ -297,14 +300,15 @@
      "cmd-alt-n": "agent::NewTextThread",
      "cmd-shift-h": "agent::OpenHistory",
      "cmd-alt-c": "agent::OpenConfiguration",
-      "cmd-alt-p": "assistant::OpenRulesLibrary",
+      "cmd-alt-p": "agent::OpenRulesLibrary",
      "cmd-i": "agent::ToggleProfileSelector",
-      "cmd-alt-/": "assistant::ToggleModelSelector",
+      "cmd-alt-/": "agent::ToggleModelSelector",
      "cmd-shift-a": "agent::ToggleContextPicker",
      "cmd-shift-o": "agent::ToggleNavigationMenu",
      "cmd-shift-i": "agent::ToggleOptionsMenu",
      "shift-escape": "agent::ExpandMessageEditor",
-      "cmd-alt-e": "agent::RemoveAllContext"
+      "cmd-alt-e": "agent::RemoveAllContext",
+      "cmd-shift-e": "project_panel::ToggleFocus"
    }
  },
  {
@@ -635,7 +639,7 @@
      "cmd-shift-e": "project_panel::ToggleFocus",
      "cmd-shift-b": "outline_panel::ToggleFocus",
      "ctrl-shift-g": "git_panel::ToggleFocus",
-      "cmd-?": "assistant::ToggleFocus",
+      "cmd-?": "agent::ToggleFocus",
      "cmd-alt-s": "workspace::SaveAll",
      "cmd-k m": "language_selector::Toggle",
      "escape": "workspace::Unfollow",
@@ -774,7 +778,7 @@
    "use_key_equivalents": true,
    "bindings": {
      "cmd-shift-a": "agent::ToggleContextPicker",
-      "cmd-alt-/": "assistant::ToggleModelSelector",
+      "cmd-alt-/": "agent::ToggleModelSelector",
      "cmd-alt-e": "agent::RemoveAllContext",
      "ctrl-[": "assistant::CyclePreviousInlineAssist",
      "ctrl-]": "assistant::CycleNextInlineAssist"
--- a/assets/settings/default.json
+++ b/assets/settings/default.json
@@ -67,6 +67,8 @@
  "ui_font_weight": 400,
  // The default font size for text in the UI
  "ui_font_size": 16,
+  // The default font size for text in the agent panel
+  "agent_font_size": 16,
  // How much to fade out unused code.
  "unnecessary_code_fade": 0.3,
  // Active pane styling settings.
@@ -305,6 +307,15 @@
    // Whether to show agent review buttons in the editor toolbar.
    "agent_review": true
  },
+  // Titlebar related settings
+  "title_bar": {
+    // Whether to show the branch icon beside branch switcher in the titlebar.
+    "show_branch_icon": false,
+    // Whether to show onboarding banners in the titlebar.
+    "show_onboarding_banner": true,
+    // Whether to show user picture in the titlebar.
+    "show_user_picture": true
+  },
  // Scrollbar related settings
  "scrollbar": {
    // When to show the scrollbar in the editor.
@@ -359,8 +370,6 @@
  "gutter": {
    // Whether to show line numbers in the gutter.
    "line_numbers": true,
-    // Whether to show code action buttons in the gutter.
-    "code_actions": true,
    // Whether to show runnables buttons in the gutter.
    "runnables": true,
    // Whether to show breakpoints in the gutter.
@@ -603,13 +612,11 @@
    //
    // Default: main
    "fallback_branch_name": "main",
-
    // Whether to sort entries in the panel by path
    // or by status (the default).
    //
    // Default: false
    "sort_by_path": false,
-
    "scrollbar": {
      // When to show the scrollbar in the git panel.
      //
@@ -630,33 +637,57 @@
    // Default width of the notification panel.
    "default_width": 380
  },
-  "assistant": {
+  "agent": {
    // Version of this setting.
    "version": "2",
-    // Whether the assistant is enabled.
+    // Whether the agent is enabled.
    "enabled": true,
-    // Whether to show the assistant panel button in the status bar.
+    /// What completion mode to start new threads in, if available. Can be 'normal' or 'max'.
+    "preferred_completion_mode": "normal",
+    // Whether to show the agent panel button in the status bar.
    "button": true,
-    // Where to dock the assistant panel. Can be 'left', 'right' or 'bottom'.
+    // Where to dock the agent panel. Can be 'left', 'right' or 'bottom'.
    "dock": "right",
-    // Default width when the assistant is docked to the left or right.
+    // Default width when the agent panel is docked to the left or right.
    "default_width": 640,
-    // Default height when the assistant is docked to the bottom.
+    // Default height when the agent panel is docked to the bottom.
    "default_height": 320,
-    // The default model to use when creating new chats.
+    // The default model to use when creating new threads.
    "default_model": {
      // The provider to use.
      "provider": "zed.dev",
      // The model to use.
      "model": "claude-3-7-sonnet-latest"
    },
-    // The model to use when applying edits from the assistant.
+    // The model to use when applying edits from the agent.
    "editor_model": {
      // The provider to use.
      "provider": "zed.dev",
      // The model to use.
      "model": "claude-3-7-sonnet-latest"
    },
+    // Additional parameters for language model requests. When making a request to a model, parameters will be taken
+    // from the last entry in this list that matches the model's provider and name. In each entry, both provider
+    // and model are optional, so that you can specify parameters for either one.
+    "model_parameters": [
+      // To set parameters for all requests to OpenAI models:
+      // {
+      //   "provider": "openai",
+      //   "temperature": 0.5
+      // }
+      //
+      // To set parameters for all requests in general:
+      // {
+      //   "temperature": 0
+      // }
+      //
+      // To set parameters for a specific provider and model:
+      // {
+      //   "provider": "zed.dev",
+      //   "model": "claude-3-7-sonnet-latest",
+      //   "temperature": 1.0
+      // }
+    ],
    // When enabled, the agent can run potentially destructive actions without asking for your confirmation.
    "always_allow_tool_actions": false,
    // When enabled, the agent will stream edits.
@@ -665,24 +696,6 @@
    "single_file_review": true,
    "default_profile": "write",
    "profiles": {
-      "ask": {
-        "name": "Ask",
-        // We don't know which of the context server tools are safe for the "Ask" profile, so we don't enable them by default.
-        // "enable_all_context_servers": true,
-        "tools": {
-          "contents": true,
-          "diagnostics": true,
-          "fetch": true,
-          "list_directory": true,
-          "now": true,
-          "find_path": true,
-          "read_file": true,
-          "open": true,
-          "grep": true,
-          "thinking": true,
-          "web_search": true
-        }
-      },
      "write": {
        "name": "Write",
        "enable_all_context_servers": true,
@@ -705,13 +718,31 @@
          "web_search": true
        }
      },
-      "manual": {
-        "name": "Manual",
+      "ask": {
+        "name": "Ask",
+        // We don't know which of the context server tools are safe for the "Ask" profile, so we don't enable them by default.
+        // "enable_all_context_servers": true,
+        "tools": {
+          "contents": true,
+          "diagnostics": true,
+          "fetch": true,
+          "list_directory": true,
+          "now": true,
+          "find_path": true,
+          "read_file": true,
+          "open": true,
+          "grep": true,
+          "thinking": true,
+          "web_search": true
+        }
+      },
+      "minimal": {
+        "name": "Minimal",
        "enable_all_context_servers": false,
        "tools": {}
      }
    },
-    // Where to show notifications when an agent has either completed
+    // Where to show notifications when the agent has either completed
    // its response, or else needs confirmation before it can run a
    // tool action.
    // "primary_screen" - Show the notification only on your primary screen (default)
@@ -901,6 +932,8 @@
  "hard_tabs": false,
  // How many columns a tab should occupy.
  "tab_size": 4,
+  // What debuggers are preferred by default for all languages.
+  "debuggers": [],
  // Control what info is collected by Zed.
  "telemetry": {
    // Send debug info like crash reports.
@@ -1016,9 +1049,9 @@
    // 2. Display predictions inline only when holding a modifier key (alt by default).
    //     "mode": "subtle"
    "mode": "eager",
-    // Whether edit predictions are enabled in the assistant panel.
+    // Whether edit predictions are enabled when editing text threads.
    // This setting has no effect if globally disabled.
-    "enabled_in_assistant": true
+    "enabled_in_text_threads": true
  },
  // Settings specific to journaling
  "journal": {
@@ -1320,6 +1353,9 @@
    "Elixir": {
      "language_servers": ["elixir-ls", "!next-ls", "!lexical", "..."]
    },
+    "Elm": {
+      "tab_size": 4
+    },
    "Erlang": {
      "language_servers": ["erlang-ls", "!elp", "..."]
    },
@@ -1594,8 +1630,6 @@
  //   "W": "workspace::Save"
  // }
  "command_aliases": {},
-  // Whether to show user picture in titlebar.
-  "show_user_picture": true,
  // ssh_connections is an array of ssh connections.
  // You can configure these from `project: Open Remote` in the command palette.
  // Zed's ssh support will pull configuration from your ~/.ssh too.
@@ -1612,7 +1646,7 @@
  //   }
  // ]
  "ssh_connections": [],
-  // Configures context servers for use in the Assistant.
+  // Configures context servers for use by the agent.
  "context_servers": {},
  "debugger": {
    "stepping_granularity": "line",
--- a/crates/activity_indicator/src/activity_indicator.rs
+++ b/crates/activity_indicator/src/activity_indicator.rs
@@ -84,19 +84,6 @@ impl ActivityIndicator {
            })
            .detach();

-            let mut status_events = languages.dap_server_binary_statuses();
-            cx.spawn(async move |this, cx| {
-                while let Some((name, status)) = status_events.next().await {
-                    this.update(cx, |this, cx| {
-                        this.statuses.retain(|s| s.name != name);
-                        this.statuses.push(ServerStatus { name, status });
-                        cx.notify();
-                    })?;
-                }
-                anyhow::Ok(())
-            })
-            .detach();
-
            cx.subscribe(
                &project.read(cx).lsp_store(),
                |_, _, event, cx| match event {
--- a/crates/agent/Cargo.toml
+++ b/crates/agent/Cargo.toml
@@ -29,7 +29,6 @@ buffer_diff.workspace = true
 chrono.workspace = true
 client.workspace = true
 collections.workspace = true
-command_palette_hooks.workspace = true
 component.workspace = true
 context_server.workspace = true
 convert_case.workspace = true
@@ -64,13 +63,14 @@ paths.workspace = true
 picker.workspace = true
 postage.workspace = true
 project.workspace = true
-rules_library.workspace = true
 prompt_store.workspace = true
 proto.workspace = true
 ref-cast.workspace = true
 release_channel.workspace = true
 rope.workspace = true
+rules_library.workspace = true
 schemars.workspace = true
+search.workspace = true
 serde.workspace = true
 serde_json.workspace = true
 serde_json_lenient.workspace = true
@@ -89,6 +89,7 @@ time.workspace = true
 time_format.workspace = true
 ui.workspace = true
 ui_input.workspace = true
+urlencoding.workspace = true
 util.workspace = true
 uuid.workspace = true
 workspace-hack.workspace = true
--- a/crates/agent/src/active_thread.rs
+++ b/crates/agent/src/active_thread.rs
@@ -1,3 +1,4 @@
+use crate::AssistantPanel;
 use crate::context::{AgentContextHandle, RULES_ICON};
 use crate::context_picker::{ContextPicker, MentionLink};
 use crate::context_store::ContextStore;
@@ -6,12 +7,11 @@ use crate::thread::{
    LastRestoreCheckpoint, MessageId, MessageSegment, Thread, ThreadError, ThreadEvent,
    ThreadFeedback,
 };
-use crate::thread_store::{RulesLoadingError, ThreadStore};
+use crate::thread_store::{RulesLoadingError, TextThreadStore, ThreadStore};
 use crate::tool_use::{PendingToolUseStatus, ToolUse};
 use crate::ui::{
    AddedContext, AgentNotification, AgentNotificationEvent, AnimatedLabel, ContextPill,
 };
-use crate::{AssistantPanel, OpenActiveThreadAsMarkdown};
 use anyhow::Context as _;
 use assistant_settings::{AssistantSettings, NotifyWhenAgentWaiting};
 use assistant_tool::ToolUseStatus;
@@ -29,14 +29,13 @@ use gpui::{
 };
 use language::{Buffer, Language, LanguageRegistry};
 use language_model::{
-    LanguageModelRequestMessage, LanguageModelToolUseId, MessageContent, RequestUsage, Role,
-    StopReason,
+    LanguageModelRequestMessage, LanguageModelToolUseId, MessageContent, Role, StopReason,
 };
 use markdown::parser::{CodeBlockKind, CodeBlockMetadata};
 use markdown::{HeadingLevelStyles, Markdown, MarkdownElement, MarkdownStyle, ParsedMarkdown};
 use project::{ProjectEntryId, ProjectItem as _};
 use rope::Point;
-use settings::{Settings as _, update_settings_file};
+use settings::{Settings as _, SettingsStore, update_settings_file};
 use std::ffi::OsStr;
 use std::path::Path;
 use std::rc::Rc;
@@ -57,6 +56,7 @@ pub struct ActiveThread {
    context_store: Entity<ContextStore>,
    language_registry: Arc<LanguageRegistry>,
    thread_store: Entity<ThreadStore>,
+    text_thread_store: Entity<TextThreadStore>,
    thread: Entity<Thread>,
    workspace: WeakEntity<Workspace>,
    save_thread_task: Option<Task<()>>,
@@ -72,7 +72,6 @@ pub struct ActiveThread {
    expanded_thinking_segments: HashMap<(MessageId, usize), bool>,
    expanded_code_blocks: HashMap<(MessageId, usize), bool>,
    last_error: Option<ThreadError>,
-    last_usage: Option<RequestUsage>,
    notifications: Vec<WindowHandle<AgentNotification>>,
    copied_code_block_ids: HashSet<(MessageId, usize)>,
    _subscriptions: Vec<Subscription>,
@@ -177,7 +176,7 @@ fn parse_markdown(
    cx.new(|cx| Markdown::new(text, Some(language_registry), None, cx))
 }

-fn default_markdown_style(window: &Window, cx: &App) -> MarkdownStyle {
+pub(crate) fn default_markdown_style(window: &Window, cx: &App) -> MarkdownStyle {
    let theme_settings = ThemeSettings::get_global(cx);
    let colors = cx.theme().colors();
    let ui_font_size = TextSize::Default.rems(cx);
@@ -721,6 +720,15 @@ fn open_markdown_link(
                });
            }
        }),
+        Some(MentionLink::TextThread(path)) => workspace.update(cx, |workspace, cx| {
+            if let Some(panel) = workspace.panel::<AssistantPanel>(cx) {
+                panel.update(cx, |panel, cx| {
+                    panel
+                        .open_saved_prompt_editor(path, window, cx)
+                        .detach_and_log_err(cx);
+                });
+            }
+        }),
        Some(MentionLink::Fetch(url)) => cx.open_url(&url),
        Some(MentionLink::Rule(prompt_id)) => window.dispatch_action(
            Box::new(OpenRulesLibrary {
@@ -745,6 +753,7 @@ impl ActiveThread {
    pub fn new(
        thread: Entity<Thread>,
        thread_store: Entity<ThreadStore>,
+        text_thread_store: Entity<TextThreadStore>,
        context_store: Entity<ContextStore>,
        language_registry: Arc<LanguageRegistry>,
        workspace: WeakEntity<Workspace>,
@@ -755,6 +764,7 @@ impl ActiveThread {
            cx.observe(&thread, |_, _, cx| cx.notify()),
            cx.subscribe_in(&thread, window, Self::handle_thread_event),
            cx.subscribe(&thread_store, Self::handle_rules_loading_error),
+            cx.observe_global::<SettingsStore>(|_, cx| cx.notify()),
        ];

        let list_state = ListState::new(0, ListAlignment::Bottom, px(2048.), {
@@ -767,6 +777,7 @@ impl ActiveThread {
        let mut this = Self {
            language_registry,
            thread_store,
+            text_thread_store,
            context_store,
            thread: thread.clone(),
            workspace,
@@ -783,7 +794,6 @@ impl ActiveThread {
            hide_scrollbar_task: None,
            editing_message: None,
            last_error: None,
-            last_usage: None,
            copied_code_block_ids: HashSet::default(),
            notifications: Vec::new(),
            _subscriptions: subscriptions,
@@ -840,10 +850,6 @@ impl ActiveThread {
        self.last_error.take();
    }

-    pub fn last_usage(&self) -> Option<RequestUsage> {
-        self.last_usage
-    }
-
    /// Returns the editing message id and the estimated token count in the content
    pub fn editing_message_id(&self) -> Option<(MessageId, usize)> {
        self.editing_message
@@ -851,6 +857,18 @@ impl ActiveThread {
            .map(|(id, state)| (*id, state.last_estimated_token_count.unwrap_or(0)))
    }

+    pub fn context_store(&self) -> &Entity<ContextStore> {
+        &self.context_store
+    }
+
+    pub fn thread_store(&self) -> &Entity<ThreadStore> {
+        &self.thread_store
+    }
+
+    pub fn text_thread_store(&self) -> &Entity<TextThreadStore> {
+        &self.text_thread_store
+    }
+
    fn push_message(
        &mut self,
        id: &MessageId,
@@ -949,9 +967,6 @@ impl ActiveThread {
            ThreadEvent::ShowError(error) => {
                self.last_error = Some(error.clone());
            }
-            ThreadEvent::UsageUpdated(usage) => {
-                self.last_usage = Some(*usage);
-            }
            ThreadEvent::NewRequest | ThreadEvent::CompletionCanceled => {
                cx.notify();
            }
@@ -1080,6 +1095,22 @@ impl ActiveThread {
                    cx,
                );
            }
+            ThreadEvent::MissingToolUse {
+                tool_use_id,
+                ui_text,
+            } => {
+                self.render_tool_use_markdown(
+                    tool_use_id.clone(),
+                    ui_text,
+                    "",
+                    self.thread
+                        .read(cx)
+                        .output_for_tool(tool_use_id)
+                        .map(|output| output.clone().into())
+                        .unwrap_or("".into()),
+                    cx,
+                );
+            }
        }
    }

@@ -1255,6 +1286,7 @@ impl ActiveThread {
            self.workspace.clone(),
            self.context_store.downgrade(),
            self.thread_store.downgrade(),
+            self.text_thread_store.downgrade(),
            window,
            cx,
        );
@@ -1276,6 +1308,7 @@ impl ActiveThread {
                self.context_store.clone(),
                self.workspace.clone(),
                Some(self.thread_store.downgrade()),
+                Some(self.text_thread_store.downgrade()),
                context_picker_menu_handle.clone(),
                SuggestContextKind::File,
                window,
@@ -1380,7 +1413,10 @@ impl ActiveThread {
                        messages: vec![request_message],
                        tools: vec![],
                        stop: vec![],
-                        temperature: None,
+                        temperature: AssistantSettings::temperature_for_model(
+                            &configured_model.model,
+                            cx,
+                        ),
                    };

                    Some(configured_model.model.count_tokens(request, cx))
@@ -1658,12 +1694,14 @@ impl ActiveThread {
    fn render_edit_message_editor(
        &self,
        state: &EditingMessageState,
-        window: &mut Window,
+        _window: &mut Window,
        cx: &Context<Self>,
    ) -> impl IntoElement {
        let settings = ThemeSettings::get_global(cx);
-        let font_size = TextSize::Small.rems(cx);
-        let line_height = font_size.to_pixels(window.rem_size()) * 1.75;
+        let font_size = TextSize::Small
+            .rems(cx)
+            .to_pixels(settings.agent_font_size(cx));
+        let line_height = font_size * 1.75;

        let colors = cx.theme().colors();

@@ -1742,13 +1780,19 @@ impl ActiveThread {
        let colors = cx.theme().colors();
        let editor_bg_color = colors.editor_background;

-        let open_as_markdown = IconButton::new(("open-as-markdown", ix), IconName::FileCode)
-            .shape(ui::IconButtonShape::Square)
+        let open_as_markdown = IconButton::new(("open-as-markdown", ix), IconName::DocumentText)
            .icon_size(IconSize::XSmall)
            .icon_color(Color::Ignored)
            .tooltip(Tooltip::text("Open Thread as Markdown"))
-            .on_click(|_, window, cx| {
-                window.dispatch_action(Box::new(OpenActiveThreadAsMarkdown), cx)
+            .on_click({
+                let thread = self.thread.clone();
+                let workspace = self.workspace.clone();
+                move |_, window, cx| {
+                    if let Some(workspace) = workspace.upgrade() {
+                        open_active_thread_as_markdown(thread.clone(), workspace, window, cx)
+                            .detach_and_log_err(cx);
+                    }
+                }
            });

        // For all items that should be aligned with the LLM's response.
@@ -1761,13 +1805,16 @@ impl ActiveThread {
            .mt_1()
            .py_2()
            .px(RESPONSE_PADDING_X)
-            .gap_1()
+            .mr_1()
+            .opacity(0.4)
+            .hover(|style| style.opacity(1.))
+            .gap_1p5()
            .flex_wrap()
            .justify_end();
        let feedback_items = match self.thread.read(cx).message_feedback(message_id) {
            Some(feedback) => feedback_container
                .child(
-                    div().mr_1().visible_on_hover("feedback_container").child(
+                    div().visible_on_hover("feedback_container").child(
                        Label::new(match feedback {
                            ThreadFeedback::Positive => "Thanks for your feedback!",
                            ThreadFeedback::Negative => {
@@ -1780,11 +1827,8 @@ impl ActiveThread {
                )
                .child(
                    h_flex()
-                        .pr_1()
-                        .gap_1()
                        .child(
                            IconButton::new(("feedback-thumbs-up", ix), IconName::ThumbsUp)
-                                .shape(ui::IconButtonShape::Square)
                                .icon_size(IconSize::XSmall)
                                .icon_color(match feedback {
                                    ThreadFeedback::Positive => Color::Accent,
@@ -1802,7 +1846,6 @@ impl ActiveThread {
                        )
                        .child(
                            IconButton::new(("feedback-thumbs-down", ix), IconName::ThumbsDown)
-                                .shape(ui::IconButtonShape::Square)
                                .icon_size(IconSize::XSmall)
                                .icon_color(match feedback {
                                    ThreadFeedback::Positive => Color::Ignored,
@@ -1823,7 +1866,7 @@ impl ActiveThread {
                .into_any_element(),
            None => feedback_container
                .child(
-                    div().mr_1().visible_on_hover("feedback_container").child(
+                    div().visible_on_hover("feedback_container").child(
                        Label::new(
                            "Rating the thread sends all of your current conversation to the Zed team.",
                        )
@@ -1833,13 +1876,10 @@ impl ActiveThread {
                )
                .child(
                    h_flex()
-                        .pr_1()
-                        .gap_1()
                        .child(
                            IconButton::new(("feedback-thumbs-up", ix), IconName::ThumbsUp)
                                .icon_size(IconSize::XSmall)
                                .icon_color(Color::Ignored)
-                                .shape(ui::IconButtonShape::Square)
                                .tooltip(Tooltip::text("Helpful Response"))
                                .on_click(cx.listener(move |this, _, window, cx| {
                                    this.handle_feedback_click(
@@ -1854,7 +1894,6 @@ impl ActiveThread {
                            IconButton::new(("feedback-thumbs-down", ix), IconName::ThumbsDown)
                                .icon_size(IconSize::XSmall)
                                .icon_color(Color::Ignored)
-                                .shape(ui::IconButtonShape::Square)
                                .tooltip(Tooltip::text("Not Helpful"))
                                .on_click(cx.listener(move |this, _, window, cx| {
                                    this.handle_feedback_click(
@@ -2033,7 +2072,7 @@ impl ActiveThread {
        v_flex()
            .w_full()
            .map(|parent| {
-                if let Some(checkpoint) = checkpoint.filter(|_| is_generating) {
+                if let Some(checkpoint) = checkpoint.filter(|_| !is_generating) {
                    let mut is_pending = false;
                    let mut error = None;
                    if let Some(last_restore_checkpoint) =
@@ -3213,15 +3252,18 @@ impl ActiveThread {
            .map(|tool_use| tool_use.status.clone())
        {
            self.thread.update(cx, |thread, cx| {
-                thread.run_tool(
-                    c.tool_use_id.clone(),
-                    c.ui_text.clone(),
-                    c.input.clone(),
-                    &c.messages,
-                    c.tool.clone(),
-                    Some(window.window_handle()),
-                    cx,
-                );
+                if let Some(configured) = thread.get_or_init_configured_model(cx) {
+                    thread.run_tool(
+                        c.tool_use_id.clone(),
+                        c.ui_text.clone(),
+                        c.input.clone(),
+                        &c.messages,
+                        c.tool.clone(),
+                        configured.model,
+                        Some(window.window_handle()),
+                        cx,
+                    );
+                }
            });
        }
    }
@@ -3376,6 +3418,60 @@ impl Render for ActiveThread {
    }
 }

+pub(crate) fn open_active_thread_as_markdown(
+    thread: Entity<Thread>,
+    workspace: Entity<Workspace>,
+    window: &mut Window,
+    cx: &mut App,
+) -> Task<anyhow::Result<()>> {
+    let markdown_language_task = workspace
+        .read(cx)
+        .app_state()
+        .languages
+        .language_for_name("Markdown");
+
+    window.spawn(cx, async move |cx| {
+        let markdown_language = markdown_language_task.await?;
+
+        workspace.update_in(cx, |workspace, window, cx| {
+            let thread = thread.read(cx);
+            let markdown = thread.to_markdown(cx)?;
+            let thread_summary = thread
+                .summary()
+                .map(|summary| summary.to_string())
+                .unwrap_or_else(|| "Thread".to_string());
+
+            let project = workspace.project().clone();
+
+            if !project.read(cx).is_local() {
+                anyhow::bail!("failed to open active thread as markdown in remote project");
+            }
+
+            let buffer = project.update(cx, |project, cx| {
+                project.create_local_buffer(&markdown, Some(markdown_language), cx)
+            });
+            let buffer =
+                cx.new(|cx| MultiBuffer::singleton(buffer, cx).with_title(thread_summary.clone()));
+
+            workspace.add_item_to_active_pane(
+                Box::new(cx.new(|cx| {
+                    let mut editor =
+                        Editor::for_multibuffer(buffer, Some(project.clone()), window, cx);
+                    editor.set_breadcrumb_header(thread_summary);
+                    editor
+                })),
+                None,
+                true,
+                window,
+                cx,
+            );
+
+            anyhow::Ok(())
+        })??;
+        anyhow::Ok(())
+    })
+}
+
 pub(crate) fn open_context(
    context: &AgentContextHandle,
    workspace: Entity<Workspace>,
@@ -3430,14 +3526,21 @@ pub(crate) fn open_context(
        AgentContextHandle::Thread(thread_context) => workspace.update(cx, |workspace, cx| {
            if let Some(panel) = workspace.panel::<AssistantPanel>(cx) {
                panel.update(cx, |panel, cx| {
-                    let thread_id = thread_context.thread.read(cx).id().clone();
-                    panel
-                        .open_thread_by_id(&thread_id, window, cx)
-                        .detach_and_log_err(cx)
+                    panel.open_thread(thread_context.thread.clone(), window, cx);
                });
            }
        }),

+        AgentContextHandle::TextThread(text_thread_context) => {
+            workspace.update(cx, |workspace, cx| {
+                if let Some(panel) = workspace.panel::<AssistantPanel>(cx) {
+                    panel.update(cx, |panel, cx| {
+                        panel.open_prompt_editor(text_thread_context.context.clone(), window, cx)
+                    });
+                }
+            })
+        }
+
        AgentContextHandle::Rules(rules_context) => window.dispatch_action(
            Box::new(OpenRulesLibrary {
                prompt_to_select: Some(rules_context.prompt_id.0),
--- a/crates/agent/src/agent_diff.rs
+++ b/crates/agent/src/agent_diff.rs
@@ -26,7 +26,7 @@ use std::{
    ops::Range,
    sync::Arc,
 };
-use ui::{Divider, IconButtonShape, KeyBinding, Tooltip, prelude::*, vertical_divider};
+use ui::{IconButtonShape, KeyBinding, Tooltip, prelude::*, vertical_divider};
 use util::ResultExt;
 use workspace::{
    Item, ItemHandle, ItemNavHistory, ToolbarItemEvent, ToolbarItemLocation, ToolbarItemView,
@@ -219,7 +219,7 @@ impl AgentDiffPane {
            .thread
            .read(cx)
            .summary()
-            .unwrap_or("Assistant Changes".into());
+            .unwrap_or("Agent Changes".into());
        if new_title != self.title {
            self.title = new_title;
            cx.emit(EditorEvent::TitleChanged);
@@ -324,10 +324,6 @@ fn keep_edits_in_ranges(
    window: &mut Window,
    cx: &mut Context<Editor>,
 ) {
-    if thread.read(cx).is_generating() {
-        return;
-    }
-
    let diff_hunks_in_ranges = editor
        .diff_hunks_in_ranges(&ranges, buffer_snapshot)
        .collect::<Vec<_>>();
@@ -353,10 +349,6 @@ fn reject_edits_in_ranges(
    window: &mut Window,
    cx: &mut Context<Editor>,
 ) {
-    if thread.read(cx).is_generating() {
-        return;
-    }
-
    let diff_hunks_in_ranges = editor
        .diff_hunks_in_ranges(&ranges, buffer_snapshot)
        .collect::<Vec<_>>();
@@ -481,7 +473,7 @@ impl Item for AgentDiffPane {
            .thread
            .read(cx)
            .summary()
-            .unwrap_or("Assistant Changes".into());
+            .unwrap_or("Agent Changes".into());
        Label::new(format!("Review: {}", summary))
            .color(if params.selected {
                Color::Default
@@ -703,10 +695,6 @@ fn render_diff_hunk_controls(
 ) -> AnyElement {
    let editor = editor.clone();

-    if thread.read(cx).is_generating() {
-        return Empty.into_any();
-    }
-
    h_flex()
        .h(line_height)
        .mr_0p5()
@@ -1047,8 +1035,8 @@ impl Render for AgentDiffToolbar {
                                        }
                                    }),
                            )
-                            .into_any(),
-                        Divider::vertical().into_any_element(),
+                            .into_any_element(),
+                        vertical_divider().into_any_element(),
                        h_flex()
                            .gap_0p5()
                            .child(
@@ -1081,37 +1069,34 @@ impl Render for AgentDiffToolbar {
                                        this.dispatch_action(&KeepAll, window, cx)
                                    })),
                            )
-                            .into_any(),
-                        Divider::vertical().into_any_element(),
+                            .into_any_element(),
                    ],
                };

                h_flex()
                    .track_focus(&editor_focus_handle)
                    .size_full()
-                    .child(
-                        h_flex()
-                            .py(DynamicSpacing::Base08.rems(cx))
-                            .px_2()
-                            .gap_1()
-                            .children(content)
-                            .when_some(editor.read(cx).workspace(), |this, _workspace| {
-                                this.child(
-                                    IconButton::new("review", IconName::ListCollapse)
-                                        .icon_size(IconSize::Small)
-                                        .tooltip(Tooltip::for_action_title_in(
-                                            "Review All Files",
-                                            &OpenAgentDiff,
-                                            &editor_focus_handle,
-                                        ))
-                                        .on_click({
-                                            cx.listener(move |this, _, window, cx| {
-                                                this.dispatch_action(&OpenAgentDiff, window, cx);
-                                            })
-                                        }),
-                                )
-                            }),
-                    )
+                    .px_1()
+                    .mr_1()
+                    .gap_1()
+                    .children(content)
+                    .child(vertical_divider())
+                    .when_some(editor.read(cx).workspace(), |this, _workspace| {
+                        this.child(
+                            IconButton::new("review", IconName::ListCollapse)
+                                .icon_size(IconSize::Small)
+                                .tooltip(Tooltip::for_action_title_in(
+                                    "Review All Files",
+                                    &OpenAgentDiff,
+                                    &editor_focus_handle,
+                                ))
+                                .on_click({
+                                    cx.listener(move |this, _, window, cx| {
+                                        this.dispatch_action(&OpenAgentDiff, window, cx);
+                                    })
+                                }),
+                        )
+                    })
                    .child(vertical_divider())
                    .on_action({
                        let editor = editor.clone();
@@ -1141,7 +1126,8 @@ impl Render for AgentDiffToolbar {
                let focus_handle = agent_diff.focus_handle(cx);

                h_group_xl()
-                    .px_2()
+                    .my_neg_1()
+                    .py_1()
                    .items_center()
                    .flex_wrap()
                    .child(
@@ -1366,13 +1352,13 @@ impl AgentDiff {
            }
            // intentionally being exhaustive in case we add a variant we should handle
            ThreadEvent::Stopped(Ok(StopReason::ToolUse))
-            | ThreadEvent::UsageUpdated(_)
            | ThreadEvent::StreamedCompletion
            | ThreadEvent::ReceivedTextChunk
            | ThreadEvent::StreamedAssistantText(_, _)
            | ThreadEvent::StreamedAssistantThinking(_, _)
            | ThreadEvent::StreamedToolUse { .. }
            | ThreadEvent::InvalidToolInput { .. }
+            | ThreadEvent::MissingToolUse { .. }
            | ThreadEvent::MessageAdded(_)
            | ThreadEvent::MessageEdited(_)
            | ThreadEvent::MessageDeleted(_)
@@ -1748,7 +1734,6 @@ mod tests {
    use crate::{Keep, ThreadStore, thread_store};
    use assistant_settings::AssistantSettings;
    use assistant_tool::ToolWorkingSet;
-    use context_server::ContextServerSettings;
    use editor::EditorSettings;
    use gpui::{TestAppContext, UpdateGlobal, VisualTestContext};
    use project::{FakeFs, Project};
@@ -1771,7 +1756,6 @@ mod tests {
            thread_store::init(cx);
            workspace::init_settings(cx);
            ThemeSettings::register(cx);
-            ContextServerSettings::register(cx);
            EditorSettings::register(cx);
            language_model::init_settings(cx);
        });
@@ -1817,7 +1801,7 @@ mod tests {
            .await
            .unwrap();
        cx.update(|_, cx| {
-            action_log.update(cx, |log, cx| log.track_buffer(buffer.clone(), cx));
+            action_log.update(cx, |log, cx| log.buffer_read(buffer.clone(), cx));
            buffer.update(cx, |buffer, cx| {
                buffer
                    .edit(
@@ -1928,7 +1912,6 @@ mod tests {
            thread_store::init(cx);
            workspace::init_settings(cx);
            ThemeSettings::register(cx);
-            ContextServerSettings::register(cx);
            EditorSettings::register(cx);
            language_model::init_settings(cx);
            workspace::register_project_item::<Editor>(cx);
@@ -2032,7 +2015,7 @@ mod tests {

        // Make changes
        cx.update(|_, cx| {
-            action_log.update(cx, |log, cx| log.track_buffer(buffer1.clone(), cx));
+            action_log.update(cx, |log, cx| log.buffer_read(buffer1.clone(), cx));
            buffer1.update(cx, |buffer, cx| {
                buffer
                    .edit(
@@ -2049,7 +2032,7 @@ mod tests {
            });
            action_log.update(cx, |log, cx| log.buffer_edited(buffer1.clone(), cx));

-            action_log.update(cx, |log, cx| log.track_buffer(buffer2.clone(), cx));
+            action_log.update(cx, |log, cx| log.buffer_read(buffer2.clone(), cx));
            buffer2.update(cx, |buffer, cx| {
                buffer
                    .edit(
--- a/crates/agent/src/assistant.rs
+++ b/crates/agent/src/assistant.rs
@@ -7,8 +7,10 @@ mod buffer_codegen;
 mod context;
 mod context_picker;
 mod context_server_configuration;
+mod context_server_tool;
 mod context_store;
 mod context_strip;
+mod debug;
 mod history_store;
 mod inline_assistant;
 mod inline_prompt_editor;
@@ -27,8 +29,6 @@ use std::sync::Arc;

 use assistant_settings::{AgentProfileId, AssistantSettings};
 use client::Client;
-use command_palette_hooks::CommandPaletteFilter;
-use feature_flags::{Assistant2FeatureFlag, FeatureFlagAppExt};
 use fs::Fs;
 use gpui::{App, actions, impl_actions};
 use language::LanguageRegistry;
@@ -44,10 +44,10 @@ pub use crate::assistant_panel::{AssistantPanel, ConcreteAssistantPanelDelegate}
 pub use crate::context::{ContextLoadResult, LoadedContext};
 pub use crate::inline_assistant::InlineAssistant;
 pub use crate::thread::{Message, MessageSegment, Thread, ThreadEvent};
-pub use crate::thread_store::ThreadStore;
+pub use crate::thread_store::{TextThreadStore, ThreadStore};
 pub use agent_diff::{AgentDiffPane, AgentDiffToolbar};
 pub use context_store::ContextStore;
-pub use ui::{all_agent_previews, get_agent_preview};
+pub use ui::preview::{all_agent_previews, get_agent_preview};

 actions!(
    agent,
@@ -78,7 +78,8 @@ actions!(
        Reject,
        RejectAll,
        KeepAll,
-        Follow
+        Follow,
+        ResetTrialUpsell,
    ]
 );

@@ -104,8 +105,6 @@ impl ManageProfiles {

 impl_actions!(agent, [NewThread, ManageProfiles]);

-const NAMESPACE: &str = "agent";
-
 /// Initializes the `agent` crate.
 pub fn init(
    fs: Arc<dyn Fs>,
@@ -133,25 +132,4 @@ pub fn init(
    );
    cx.observe_new(AddContextServerModal::register).detach();
    cx.observe_new(ManageProfilesModal::register).detach();
-
-    feature_gate_agent_actions(cx);
-}
-
-fn feature_gate_agent_actions(cx: &mut App) {
-    CommandPaletteFilter::update_global(cx, |filter, _cx| {
-        filter.hide_namespace(NAMESPACE);
-    });
-
-    cx.observe_flag::<Assistant2FeatureFlag, _>(move |is_enabled, cx| {
-        if is_enabled {
-            CommandPaletteFilter::update_global(cx, |filter, _cx| {
-                filter.show_namespace(NAMESPACE);
-            });
-        } else {
-            CommandPaletteFilter::update_global(cx, |filter, _cx| {
-                filter.hide_namespace(NAMESPACE);
-            });
-        }
-    })
-    .detach();
 }
--- a/crates/agent/src/assistant_configuration.rs
+++ b/crates/agent/src/assistant_configuration.rs
@@ -8,13 +8,14 @@ use std::{sync::Arc, time::Duration};
 use assistant_settings::AssistantSettings;
 use assistant_tool::{ToolSource, ToolWorkingSet};
 use collections::HashMap;
-use context_server::manager::{ContextServer, ContextServerManager, ContextServerStatus};
+use context_server::ContextServerId;
 use fs::Fs;
 use gpui::{
    Action, Animation, AnimationExt as _, AnyView, App, Entity, EventEmitter, FocusHandle,
    Focusable, ScrollHandle, Subscription, pulsating_between,
 };
 use language_model::{LanguageModelProvider, LanguageModelProviderId, LanguageModelRegistry};
+use project::context_server_store::{ContextServerStatus, ContextServerStore};
 use settings::{Settings, update_settings_file};
 use ui::{
    Disclosure, Divider, DividerColor, ElevationIndex, Indicator, Scrollbar, ScrollbarState,
@@ -33,8 +34,8 @@ pub struct AssistantConfiguration {
    fs: Arc<dyn Fs>,
    focus_handle: FocusHandle,
    configuration_views_by_provider: HashMap<LanguageModelProviderId, AnyView>,
-    context_server_manager: Entity<ContextServerManager>,
-    expanded_context_server_tools: HashMap<Arc<str>, bool>,
+    context_server_store: Entity<ContextServerStore>,
+    expanded_context_server_tools: HashMap<ContextServerId, bool>,
    tools: Entity<ToolWorkingSet>,
    _registry_subscription: Subscription,
    scroll_handle: ScrollHandle,
@@ -44,7 +45,7 @@ pub struct AssistantConfiguration {
 impl AssistantConfiguration {
    pub fn new(
        fs: Arc<dyn Fs>,
-        context_server_manager: Entity<ContextServerManager>,
+        context_server_store: Entity<ContextServerStore>,
        tools: Entity<ToolWorkingSet>,
        window: &mut Window,
        cx: &mut Context<Self>,
@@ -75,7 +76,7 @@ impl AssistantConfiguration {
            fs,
            focus_handle,
            configuration_views_by_provider: HashMap::default(),
-            context_server_manager,
+            context_server_store,
            expanded_context_server_tools: HashMap::default(),
            tools,
            _registry_subscription: registry_subscription,
@@ -306,7 +307,7 @@ impl AssistantConfiguration {
        window: &mut Window,
        cx: &mut Context<Self>,
    ) -> impl IntoElement {
-        let context_servers = self.context_server_manager.read(cx).all_servers().clone();
+        let context_server_ids = self.context_server_store.read(cx).all_server_ids().clone();

        const SUBHEADING: &str = "Connect to context servers via the Model Context Protocol either via Zed extensions or directly.";

@@ -322,9 +323,9 @@ impl AssistantConfiguration {
                    .child(Label::new(SUBHEADING).color(Color::Muted)),
            )
            .children(
-                context_servers
-                    .into_iter()
-                    .map(|context_server| self.render_context_server(context_server, window, cx)),
+                context_server_ids.into_iter().map(|context_server_id| {
+                    self.render_context_server(context_server_id, window, cx)
+                }),
            )
            .child(
                h_flex()
@@ -374,19 +375,20 @@ impl AssistantConfiguration {

    fn render_context_server(
        &self,
-        context_server: Arc<ContextServer>,
+        context_server_id: ContextServerId,
        window: &mut Window,
        cx: &mut Context<Self>,
    ) -> impl use<> + IntoElement {
        let tools_by_source = self.tools.read(cx).tools_by_source(cx);
        let server_status = self
-            .context_server_manager
+            .context_server_store
            .read(cx)
-            .status_for_server(&context_server.id());
+            .status_for_server(&context_server_id)
+            .unwrap_or(ContextServerStatus::Stopped);

-        let is_running = matches!(server_status, Some(ContextServerStatus::Running));
+        let is_running = matches!(server_status, ContextServerStatus::Running);

-        let error = if let Some(ContextServerStatus::Error(error)) = server_status.clone() {
+        let error = if let ContextServerStatus::Error(error) = server_status.clone() {
            Some(error)
        } else {
            None
@@ -394,13 +396,13 @@ impl AssistantConfiguration {

        let are_tools_expanded = self
            .expanded_context_server_tools
-            .get(&context_server.id())
+            .get(&context_server_id)
            .copied()
            .unwrap_or_default();

        let tools = tools_by_source
            .get(&ToolSource::ContextServer {
-                id: context_server.id().into(),
+                id: context_server_id.0.clone().into(),
            })
            .map_or([].as_slice(), |tools| tools.as_slice());
        let tool_count = tools.len();
@@ -408,7 +410,7 @@ impl AssistantConfiguration {
        let border_color = cx.theme().colors().border.opacity(0.6);

        v_flex()
-            .id(SharedString::from(context_server.id()))
+            .id(SharedString::from(context_server_id.0.clone()))
            .border_1()
            .rounded_md()
            .border_color(border_color)
@@ -432,7 +434,7 @@ impl AssistantConfiguration {
                                )
                                .disabled(tool_count == 0)
                                .on_click(cx.listener({
-                                    let context_server_id = context_server.id();
+                                    let context_server_id = context_server_id.clone();
                                    move |this, _event, _window, _cx| {
                                        let is_open = this
                                            .expanded_context_server_tools
@@ -444,14 +446,14 @@ impl AssistantConfiguration {
                                })),
                            )
                            .child(match server_status {
-                                Some(ContextServerStatus::Starting) => {
+                                ContextServerStatus::Starting => {
                                    let color = Color::Success.color(cx);
                                    Indicator::dot()
                                        .color(Color::Success)
                                        .with_animation(
                                            SharedString::from(format!(
                                                "{}-starting",
-                                                context_server.id(),
+                                                context_server_id.0.clone(),
                                            )),
                                            Animation::new(Duration::from_secs(2))
                                                .repeat()
@@ -462,15 +464,17 @@ impl AssistantConfiguration {
                                        )
                                        .into_any_element()
                                }
-                                Some(ContextServerStatus::Running) => {
+                                ContextServerStatus::Running => {
                                    Indicator::dot().color(Color::Success).into_any_element()
                                }
-                                Some(ContextServerStatus::Error(_)) => {
+                                ContextServerStatus::Error(_) => {
                                    Indicator::dot().color(Color::Error).into_any_element()
                                }
-                                None => Indicator::dot().color(Color::Muted).into_any_element(),
+                                ContextServerStatus::Stopped => {
+                                    Indicator::dot().color(Color::Muted).into_any_element()
+                                }
                            })
-                            .child(Label::new(context_server.id()).ml_0p5())
+                            .child(Label::new(context_server_id.0.clone()).ml_0p5())
                            .when(is_running, |this| {
                                this.child(
                                    Label::new(if tool_count == 1 {
@@ -487,32 +491,22 @@ impl AssistantConfiguration {
                        Switch::new("context-server-switch", is_running.into())
                            .color(SwitchColor::Accent)
                            .on_click({
-                                let context_server_manager = self.context_server_manager.clone();
-                                let context_server = context_server.clone();
+                                let context_server_manager = self.context_server_store.clone();
+                                let context_server_id = context_server_id.clone();
                                move |state, _window, cx| match state {
                                    ToggleState::Unselected | ToggleState::Indeterminate => {
                                        context_server_manager.update(cx, |this, cx| {
-                                            this.stop_server(context_server.clone(), cx).log_err();
+                                            this.stop_server(&context_server_id, cx).log_err();
                                        });
                                    }
                                    ToggleState::Selected => {
-                                        cx.spawn({
-                                            let context_server_manager =
-                                                context_server_manager.clone();
-                                            let context_server = context_server.clone();
-                                            async move |cx| {
-                                                if let Some(start_server_task) =
-                                                    context_server_manager
-                                                        .update(cx, |this, cx| {
-                                                            this.start_server(context_server, cx)
-                                                        })
-                                                        .log_err()
-                                                {
-                                                    start_server_task.await.log_err();
-                                                }
+                                        context_server_manager.update(cx, |this, cx| {
+                                            if let Some(server) =
+                                                this.get_server(&context_server_id)
+                                            {
+                                                this.start_server(server, cx).log_err();
                                            }
                                        })
-                                        .detach();
                                    }
                                }
                            }),
--- a/crates/agent/src/assistant_configuration/add_context_server_modal.rs
+++ b/crates/agent/src/assistant_configuration/add_context_server_modal.rs
@@ -1,5 +1,6 @@
-use context_server::{ContextServerSettings, ServerCommand, ServerConfig};
+use context_server::ContextServerCommand;
 use gpui::{DismissEvent, Entity, EventEmitter, FocusHandle, Focusable, WeakEntity, prelude::*};
+use project::project_settings::{ContextServerConfiguration, ProjectSettings};
 use serde_json::json;
 use settings::update_settings_file;
 use ui::{KeyBinding, Modal, ModalFooter, ModalHeader, Section, Tooltip, prelude::*};
@@ -77,11 +78,11 @@ impl AddContextServerModal {
        if let Some(workspace) = self.workspace.upgrade() {
            workspace.update(cx, |workspace, cx| {
                let fs = workspace.app_state().fs.clone();
-                update_settings_file::<ContextServerSettings>(fs.clone(), cx, |settings, _| {
+                update_settings_file::<ProjectSettings>(fs.clone(), cx, |settings, _| {
                    settings.context_servers.insert(
                        name.into(),
-                        ServerConfig {
-                            command: Some(ServerCommand {
+                        ContextServerConfiguration {
+                            command: Some(ContextServerCommand {
                                path,
                                args,
                                env: None,
@@ -146,47 +147,50 @@ impl Render for AddContextServerModal {
                        ),
                    )
                    .footer(
-                        ModalFooter::new()
-                            .start_slot(
-                                Button::new("cancel", "Cancel")
-                                    .key_binding(
-                                        KeyBinding::for_action_in(
-                                            &menu::Cancel,
-                                            &focus_handle,
-                                            window,
-                                            cx,
+                        ModalFooter::new().end_slot(
+                            h_flex()
+                                .gap_2()
+                                .child(
+                                    Button::new("cancel", "Cancel")
+                                        .key_binding(
+                                            KeyBinding::for_action_in(
+                                                &menu::Cancel,
+                                                &focus_handle,
+                                                window,
+                                                cx,
+                                            )
+                                            .map(|kb| kb.size(rems_from_px(12.))),
                                        )
-                                        .map(|kb| kb.size(rems_from_px(12.))),
-                                    )
-                                    .on_click(cx.listener(|this, _event, _window, cx| {
-                                        this.cancel(&menu::Cancel, cx)
-                                    })),
-                            )
-                            .end_slot(
-                                Button::new("add-server", "Add Server")
-                                    .disabled(is_name_empty || is_command_empty)
-                                    .key_binding(
-                                        KeyBinding::for_action_in(
-                                            &menu::Confirm,
-                                            &focus_handle,
-                                            window,
-                                            cx,
+                                        .on_click(cx.listener(|this, _event, _window, cx| {
+                                            this.cancel(&menu::Cancel, cx)
+                                        })),
+                                )
+                                .child(
+                                    Button::new("add-server", "Add Server")
+                                        .disabled(is_name_empty || is_command_empty)
+                                        .key_binding(
+                                            KeyBinding::for_action_in(
+                                                &menu::Confirm,
+                                                &focus_handle,
+                                                window,
+                                                cx,
+                                            )
+                                            .map(|kb| kb.size(rems_from_px(12.))),
                                        )
-                                        .map(|kb| kb.size(rems_from_px(12.))),
-                                    )
-                                    .map(|button| {
-                                        if is_name_empty {
-                                            button.tooltip(Tooltip::text("Name is required"))
-                                        } else if is_command_empty {
-                                            button.tooltip(Tooltip::text("Command is required"))
-                                        } else {
-                                            button
-                                        }
-                                    })
-                                    .on_click(cx.listener(|this, _event, _window, cx| {
-                                        this.confirm(&menu::Confirm, cx)
-                                    })),
-                            ),
+                                        .map(|button| {
+                                            if is_name_empty {
+                                                button.tooltip(Tooltip::text("Name is required"))
+                                            } else if is_command_empty {
+                                                button.tooltip(Tooltip::text("Command is required"))
+                                            } else {
+                                                button
+                                            }
+                                        })
+                                        .on_click(cx.listener(|this, _event, _window, cx| {
+                                            this.confirm(&menu::Confirm, cx)
+                                        })),
+                                ),
+                        ),
                    ),
            )
    }
--- a/crates/agent/src/assistant_configuration/configure_context_server_modal.rs
+++ b/crates/agent/src/assistant_configuration/configure_context_server_modal.rs
@@ -4,9 +4,8 @@ use std::{
 };

 use anyhow::Context as _;
-use context_server::manager::{ContextServerManager, ContextServerStatus};
+use context_server::ContextServerId;
 use editor::{Editor, EditorElement, EditorStyle};
-use extension::ContextServerConfiguration;
 use gpui::{
    Animation, AnimationExt, App, DismissEvent, Entity, EventEmitter, FocusHandle, Focusable, Task,
    TextStyle, TextStyleRefinement, Transformation, UnderlineStyle, WeakEntity, percentage,
@@ -14,20 +13,30 @@ use gpui::{
 use language::{Language, LanguageRegistry};
 use markdown::{Markdown, MarkdownElement, MarkdownStyle};
 use notifications::status_toast::{StatusToast, ToastIcon};
+use project::{
+    context_server_store::{ContextServerStatus, ContextServerStore},
+    project_settings::{ContextServerConfiguration, ProjectSettings},
+};
 use settings::{Settings as _, update_settings_file};
 use theme::ThemeSettings;
-use ui::{KeyBinding, Modal, ModalFooter, ModalHeader, Section, prelude::*};
+use ui::{KeyBinding, Modal, ModalFooter, ModalHeader, Section, Tooltip, prelude::*};
 use util::ResultExt;
 use workspace::{ModalView, Workspace};

 pub(crate) struct ConfigureContextServerModal {
    workspace: WeakEntity<Workspace>,
-    context_servers_to_setup: Vec<ConfigureContextServer>,
-    context_server_manager: Entity<ContextServerManager>,
+    focus_handle: FocusHandle,
+    context_servers_to_setup: Vec<ContextServerSetup>,
+    context_server_store: Entity<ContextServerStore>,
 }

-struct ConfigureContextServer {
-    id: Arc<str>,
+#[allow(clippy::large_enum_variant)]
+enum Configuration {
+    NotAvailable,
+    Required(ConfigurationRequiredState),
+}
+
+struct ConfigurationRequiredState {
    installation_instructions: Entity<markdown::Markdown>,
    settings_validator: Option<jsonschema::Validator>,
    settings_editor: Entity<Editor>,
@@ -35,62 +44,91 @@ struct ConfigureContextServer {
    waiting_for_context_server: bool,
 }

+struct ContextServerSetup {
+    id: ContextServerId,
+    repository_url: Option<SharedString>,
+    configuration: Configuration,
+}
+
 impl ConfigureContextServerModal {
    pub fn new(
-        configurations: impl Iterator<Item = (Arc<str>, ContextServerConfiguration)>,
+        configurations: impl Iterator<Item = crate::context_server_configuration::Configuration>,
+        context_server_store: Entity<ContextServerStore>,
        jsonc_language: Option<Arc<Language>>,
-        context_server_manager: Entity<ContextServerManager>,
        language_registry: Arc<LanguageRegistry>,
        workspace: WeakEntity<Workspace>,
        window: &mut Window,
-        cx: &mut App,
-    ) -> Option<Self> {
+        cx: &mut Context<Self>,
+    ) -> Self {
        let context_servers_to_setup = configurations
-            .map(|(id, manifest)| {
-                let jsonc_language = jsonc_language.clone();
-                let settings_validator = jsonschema::validator_for(&manifest.settings_schema)
-                    .context("Failed to load JSON schema for context server settings")
-                    .log_err();
-                ConfigureContextServer {
-                    id: id.clone(),
-                    installation_instructions: cx.new(|cx| {
-                        Markdown::new(
-                            manifest.installation_instructions.clone().into(),
-                            Some(language_registry.clone()),
-                            None,
-                            cx,
-                        )
-                    }),
-                    settings_validator,
-                    settings_editor: cx.new(|cx| {
-                        let mut editor = Editor::auto_height(16, window, cx);
-                        editor.set_text(manifest.default_settings.trim(), window, cx);
-                        if let Some(buffer) = editor.buffer().read(cx).as_singleton() {
-                            buffer.update(cx, |buffer, cx| buffer.set_language(jsonc_language, cx))
-                        }
-                        editor
-                    }),
-                    waiting_for_context_server: false,
-                    last_error: None,
+            .map(|config| match config {
+                crate::context_server_configuration::Configuration::NotAvailable(
+                    context_server_id,
+                    repository_url,
+                ) => ContextServerSetup {
+                    id: context_server_id,
+                    repository_url,
+                    configuration: Configuration::NotAvailable,
+                },
+                crate::context_server_configuration::Configuration::Required(
+                    context_server_id,
+                    repository_url,
+                    config,
+                ) => {
+                    let jsonc_language = jsonc_language.clone();
+                    let settings_validator = jsonschema::validator_for(&config.settings_schema)
+                        .context("Failed to load JSON schema for context server settings")
+                        .log_err();
+                    let state = ConfigurationRequiredState {
+                        installation_instructions: cx.new(|cx| {
+                            Markdown::new(
+                                config.installation_instructions.clone().into(),
+                                Some(language_registry.clone()),
+                                None,
+                                cx,
+                            )
+                        }),
+                        settings_validator,
+                        settings_editor: cx.new(|cx| {
+                            let mut editor = Editor::auto_height(16, window, cx);
+                            editor.set_text(config.default_settings.trim(), window, cx);
+                            editor.set_show_gutter(false, cx);
+                            editor.set_soft_wrap_mode(
+                                language::language_settings::SoftWrap::None,
+                                cx,
+                            );
+                            if let Some(buffer) = editor.buffer().read(cx).as_singleton() {
+                                buffer.update(cx, |buffer, cx| {
+                                    buffer.set_language(jsonc_language, cx)
+                                })
+                            }
+                            editor
+                        }),
+                        waiting_for_context_server: false,
+                        last_error: None,
+                    };
+                    ContextServerSetup {
+                        id: context_server_id,
+                        repository_url,
+                        configuration: Configuration::Required(state),
+                    }
                }
            })
            .collect::<Vec<_>>();

-        if context_servers_to_setup.is_empty() {
-            return None;
-        }
-
-        Some(Self {
+        Self {
            workspace,
+            focus_handle: cx.focus_handle(),
            context_servers_to_setup,
-            context_server_manager,
-        })
+            context_server_store,
+        }
    }
 }

 impl ConfigureContextServerModal {
    pub fn confirm(&mut self, cx: &mut Context<Self>) {
        if self.context_servers_to_setup.is_empty() {
+            self.dismiss(cx);
            return;
        }

@@ -98,7 +136,19 @@ impl ConfigureContextServerModal {
            return;
        };

-        let configuration = &mut self.context_servers_to_setup[0];
+        let id = self.context_servers_to_setup[0].id.clone();
+        let configuration = match &mut self.context_servers_to_setup[0].configuration {
+            Configuration::NotAvailable => {
+                self.context_servers_to_setup.remove(0);
+                if self.context_servers_to_setup.is_empty() {
+                    self.dismiss(cx);
+                }
+                return;
+            }
+            Configuration::Required(state) => state,
+        };
+
+        configuration.last_error.take();
        if configuration.waiting_for_context_server {
            return;
        }
@@ -121,16 +171,16 @@ impl ConfigureContextServerModal {
                return;
            }
        }
-        let id = configuration.id.clone();
+        let id = id.clone();

-        let settings_changed = context_server::ContextServerSettings::get_global(cx)
+        let settings_changed = ProjectSettings::get_global(cx)
            .context_servers
-            .get(&id)
+            .get(&id.0)
            .map_or(true, |config| {
                config.settings.as_ref() != Some(&settings_value)
            });

-        let is_running = self.context_server_manager.read(cx).status_for_server(&id)
+        let is_running = self.context_server_store.read(cx).status_for_server(&id)
            == Some(ContextServerStatus::Running);

        if !settings_changed && is_running {
@@ -140,7 +190,7 @@ impl ConfigureContextServerModal {

        configuration.waiting_for_context_server = true;

-        let task = wait_for_context_server(&self.context_server_manager, id.clone(), cx);
+        let task = wait_for_context_server(&self.context_server_store, id.clone(), cx);
        cx.spawn({
            let id = id.clone();
            async move |this, cx| {
@@ -150,9 +200,14 @@ impl ConfigureContextServerModal {
                        this.complete_setup(id, cx);
                    }
                    Err(err) => {
-                        if let Some(configuration) = this.context_servers_to_setup.get_mut(0) {
-                            configuration.last_error = Some(err.into());
-                            configuration.waiting_for_context_server = false;
+                        if let Some(setup) = this.context_servers_to_setup.get_mut(0) {
+                            match &mut setup.configuration {
+                                Configuration::NotAvailable => {}
+                                Configuration::Required(state) => {
+                                    state.last_error = Some(err.into());
+                                    state.waiting_for_context_server = false;
+                                }
+                            }
                        } else {
                            this.dismiss(cx);
                        }
@@ -164,29 +219,25 @@ impl ConfigureContextServerModal {
        .detach();

        // When we write the settings to the file, the context server will be restarted.
-        update_settings_file::<context_server::ContextServerSettings>(
-            workspace.read(cx).app_state().fs.clone(),
-            cx,
-            {
-                let id = id.clone();
-                |settings, _| {
-                    if let Some(server_config) = settings.context_servers.get_mut(&id) {
-                        server_config.settings = Some(settings_value);
-                    } else {
-                        settings.context_servers.insert(
-                            id,
-                            context_server::ServerConfig {
-                                settings: Some(settings_value),
-                                ..Default::default()
-                            },
-                        );
-                    }
+        update_settings_file::<ProjectSettings>(workspace.read(cx).app_state().fs.clone(), cx, {
+            let id = id.clone();
+            |settings, _| {
+                if let Some(server_config) = settings.context_servers.get_mut(&id.0) {
+                    server_config.settings = Some(settings_value);
+                } else {
+                    settings.context_servers.insert(
+                        id.0,
+                        ContextServerConfiguration {
+                            settings: Some(settings_value),
+                            ..Default::default()
+                        },
+                    );
                }
-            },
-        );
+            }
+        });
    }

-    fn complete_setup(&mut self, id: Arc<str>, cx: &mut Context<Self>) {
+    fn complete_setup(&mut self, id: ContextServerId, cx: &mut Context<Self>) {
        self.context_servers_to_setup.remove(0);
        cx.notify();

@@ -220,31 +271,40 @@ impl ConfigureContextServerModal {
 }

 fn wait_for_context_server(
-    context_server_manager: &Entity<ContextServerManager>,
-    context_server_id: Arc<str>,
+    context_server_store: &Entity<ContextServerStore>,
+    context_server_id: ContextServerId,
    cx: &mut App,
 ) -> Task<Result<(), Arc<str>>> {
    let (tx, rx) = futures::channel::oneshot::channel();
    let tx = Arc::new(Mutex::new(Some(tx)));

-    let subscription = cx.subscribe(context_server_manager, move |_, event, _cx| match event {
-        context_server::manager::Event::ServerStatusChanged { server_id, status } => match status {
-            Some(ContextServerStatus::Running) => {
-                if server_id == &context_server_id {
-                    if let Some(tx) = tx.lock().unwrap().take() {
-                        let _ = tx.send(Ok(()));
+    let subscription = cx.subscribe(context_server_store, move |_, event, _cx| match event {
+        project::context_server_store::Event::ServerStatusChanged { server_id, status } => {
+            match status {
+                ContextServerStatus::Running => {
+                    if server_id == &context_server_id {
+                        if let Some(tx) = tx.lock().unwrap().take() {
+                            let _ = tx.send(Ok(()));
+                        }
                    }
                }
-            }
-            Some(ContextServerStatus::Error(error)) => {
-                if server_id == &context_server_id {
-                    if let Some(tx) = tx.lock().unwrap().take() {
-                        let _ = tx.send(Err(error.clone()));
+                ContextServerStatus::Stopped => {
+                    if server_id == &context_server_id {
+                        if let Some(tx) = tx.lock().unwrap().take() {
+                            let _ = tx.send(Err("Context server stopped running".into()));
+                        }
                    }
                }
+                ContextServerStatus::Error(error) => {
+                    if server_id == &context_server_id {
+                        if let Some(tx) = tx.lock().unwrap().take() {
+                            let _ = tx.send(Err(error.clone()));
+                        }
+                    }
+                }
+                _ => {}
            }
-            _ => {}
-        },
+        }
    });

    cx.spawn(async move |_cx| {
@@ -256,16 +316,17 @@ fn wait_for_context_server(

 impl Render for ConfigureContextServerModal {
    fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
-        let Some(configuration) = self.context_servers_to_setup.first() else {
-            return div().child("No context servers to setup");
+        let Some(setup) = self.context_servers_to_setup.first() else {
+            return div().into_any_element();
        };

        let focus_handle = self.focus_handle(cx);

        div()
            .elevation_3(cx)
-            .w(rems(34.))
+            .w(rems(42.))
            .key_context("ConfigureContextServerModal")
+            .track_focus(&focus_handle)
            .on_action(cx.listener(|this, _: &menu::Confirm, _window, cx| this.confirm(cx)))
            .on_action(cx.listener(|this, _: &menu::Cancel, _window, cx| this.dismiss(cx)))
            .capture_any_mouse_down(cx.listener(|this, _, window, cx| {
@@ -273,9 +334,15 @@ impl Render for ConfigureContextServerModal {
            }))
            .child(
                Modal::new("configure-context-server", None)
-                    .header(ModalHeader::new().headline(format!("Configure {}", configuration.id)))
-                    .section(
-                        Section::new()
+                    .header(ModalHeader::new().headline(format!("Configure {}", setup.id)))
+                    .section(match &setup.configuration {
+                        Configuration::NotAvailable => Section::new().child(
+                            Label::new(
+                                "No configuration options available for this context server. Visit the Repository for any further instructions.",
+                            )
+                            .color(Color::Muted),
+                        ),
+                        Configuration::Required(configuration) => Section::new()
                            .child(div().pb_2().text_sm().child(MarkdownElement::new(
                                configuration.installation_instructions.clone(),
                                default_markdown_style(window, cx),
@@ -359,45 +426,84 @@ impl Render for ConfigureContextServerModal {
                                        ),
                                )
                            }),
-                    )
+                    })
                    .footer(
-                        ModalFooter::new().end_slot(
-                            h_flex()
-                                .gap_1()
-                                .child(
-                                    Button::new("cancel", "Cancel")
-                                        .key_binding(
-                                            KeyBinding::for_action_in(
-                                                &menu::Cancel,
-                                                &focus_handle,
-                                                window,
-                                                cx,
-                                            )
-                                            .map(|kb| kb.size(rems_from_px(12.))),
-                                        )
-                                        .on_click(cx.listener(|this, _event, _window, cx| {
-                                            this.dismiss(cx)
-                                        })),
+                        ModalFooter::new()
+                            .when_some(setup.repository_url.clone(), |this, repository_url| {
+                                this.start_slot(
+                                    h_flex().w_full().child(
+                                        Button::new("open-repository", "Open Repository")
+                                            .icon(IconName::ArrowUpRight)
+                                            .icon_color(Color::Muted)
+                                            .icon_size(IconSize::XSmall)
+                                            .tooltip({
+                                                let repository_url = repository_url.clone();
+                                                move |window, cx| {
+                                                    Tooltip::with_meta(
+                                                        "Open Repository",
+                                                        None,
+                                                        repository_url.clone(),
+                                                        window,
+                                                        cx,
+                                                    )
+                                                }
+                                            })
+                                            .on_click(move |_, _, cx| cx.open_url(&repository_url)),
+                                    ),
                                )
-                                .child(
-                                    Button::new("configure-server", "Configure MCP")
-                                        .disabled(configuration.waiting_for_context_server)
-                                        .key_binding(
-                                            KeyBinding::for_action_in(
-                                                &menu::Confirm,
-                                                &focus_handle,
-                                                window,
-                                                cx,
-                                            )
-                                            .map(|kb| kb.size(rems_from_px(12.))),
+                            })
+                            .end_slot(match &setup.configuration {
+                                Configuration::NotAvailable => Button::new("dismiss", "Dismiss")
+                                    .key_binding(
+                                        KeyBinding::for_action_in(
+                                            &menu::Cancel,
+                                            &focus_handle,
+                                            window,
+                                            cx,
                                        )
-                                        .on_click(cx.listener(|this, _event, _window, cx| {
-                                            this.confirm(cx)
-                                        })),
-                                ),
-                        ),
+                                        .map(|kb| kb.size(rems_from_px(12.))),
+                                    )
+                                    .on_click(
+                                        cx.listener(|this, _event, _window, cx| this.dismiss(cx)),
+                                    )
+                                    .into_any_element(),
+                                Configuration::Required(state) => h_flex()
+                                    .gap_2()
+                                    .child(
+                                        Button::new("cancel", "Cancel")
+                                            .key_binding(
+                                                KeyBinding::for_action_in(
+                                                    &menu::Cancel,
+                                                    &focus_handle,
+                                                    window,
+                                                    cx,
+                                                )
+                                                .map(|kb| kb.size(rems_from_px(12.))),
+                                            )
+                                            .on_click(cx.listener(|this, _event, _window, cx| {
+                                                this.dismiss(cx)
+                                            })),
+                                    )
+                                    .child(
+                                        Button::new("configure-server", "Configure MCP")
+                                            .disabled(state.waiting_for_context_server)
+                                            .key_binding(
+                                                KeyBinding::for_action_in(
+                                                    &menu::Confirm,
+                                                    &focus_handle,
+                                                    window,
+                                                    cx,
+                                                )
+                                                .map(|kb| kb.size(rems_from_px(12.))),
+                                            )
+                                            .on_click(cx.listener(|this, _event, _window, cx| {
+                                                this.confirm(cx)
+                                            })),
+                                    )
+                                    .into_any_element(),
+                            }),
                    ),
-            )
+            ).into_any_element()
    }
 }

@@ -435,9 +541,14 @@ impl EventEmitter<DismissEvent> for ConfigureContextServerModal {}
 impl Focusable for ConfigureContextServerModal {
    fn focus_handle(&self, cx: &App) -> FocusHandle {
        if let Some(current) = self.context_servers_to_setup.first() {
-            current.settings_editor.read(cx).focus_handle(cx)
+            match &current.configuration {
+                Configuration::NotAvailable => self.focus_handle.clone(),
+                Configuration::Required(configuration) => {
+                    configuration.settings_editor.read(cx).focus_handle(cx)
+                }
+            }
        } else {
-            cx.focus_handle()
+            self.focus_handle.clone()
        }
    }
 }
--- a/crates/agent/src/assistant_model_selector.rs
+++ b/crates/agent/src/assistant_model_selector.rs
@@ -9,7 +9,7 @@ use language_model_selector::{
 };
 use settings::update_settings_file;
 use std::sync::Arc;
-use ui::{ButtonLike, PopoverMenuHandle, Tooltip, prelude::*};
+use ui::{PopoverMenuHandle, Tooltip, prelude::*};

 #[derive(Clone)]
 pub enum ModelType {
@@ -110,23 +110,13 @@ impl Render for AssistantModelSelector {

        LanguageModelSelectorPopoverMenu::new(
            self.selector.clone(),
-            ButtonLike::new("active-model")
-                .style(ButtonStyle::Subtle)
-                .child(
-                    h_flex()
-                        .gap_0p5()
-                        .child(
-                            Label::new(model_name)
-                                .size(LabelSize::Small)
-                                .color(Color::Muted)
-                                .ml_1(),
-                        )
-                        .child(
-                            Icon::new(IconName::ChevronDown)
-                                .color(Color::Muted)
-                                .size(IconSize::XSmall),
-                        ),
-                ),
+            Button::new("active-model", model_name)
+                .label_size(LabelSize::Small)
+                .color(Color::Muted)
+                .icon(IconName::ChevronDown)
+                .icon_size(IconSize::XSmall)
+                .icon_position(IconPosition::End)
+                .icon_color(Color::Muted),
            move |window, cx| {
                Tooltip::for_action_in(
                    "Change Model",
--- a/crates/agent/src/assistant_panel.rs
+++ b/crates/agent/src/assistant_panel.rs
--- a/crates/agent/src/buffer_codegen.rs
+++ b/crates/agent/src/buffer_codegen.rs
@@ -2,6 +2,7 @@ use crate::context::ContextLoadResult;
 use crate::inline_prompt_editor::CodegenStatus;
 use crate::{context::load_context, context_store::ContextStore};
 use anyhow::Result;
+use assistant_settings::AssistantSettings;
 use client::telemetry::Telemetry;
 use collections::HashSet;
 use editor::{Anchor, AnchorRangeExt, MultiBuffer, MultiBufferSnapshot, ToOffset as _, ToPoint};
@@ -383,7 +384,7 @@ impl CodegenAlternative {
            if user_prompt.trim().to_lowercase() == "delete" {
                async { Ok(LanguageModelTextStream::default()) }.boxed_local()
            } else {
-                let request = self.build_request(user_prompt, cx)?;
+                let request = self.build_request(&model, user_prompt, cx)?;
                cx.spawn(async move |_, cx| model.stream_completion_text(request.await, &cx).await)
                    .boxed_local()
            };
@@ -393,6 +394,7 @@ impl CodegenAlternative {

    fn build_request(
        &self,
+        model: &Arc<dyn LanguageModel>,
        user_prompt: String,
        cx: &mut App,
    ) -> Result<Task<LanguageModelRequest>> {
@@ -441,6 +443,8 @@ impl CodegenAlternative {
            }
        });

+        let temperature = AssistantSettings::temperature_for_model(&model, cx);
+
        Ok(cx.spawn(async move |_cx| {
            let mut request_message = LanguageModelRequestMessage {
                role: Role::User,
@@ -463,7 +467,7 @@ impl CodegenAlternative {
                mode: None,
                tools: Vec::new(),
                stop: Vec::new(),
-                temperature: None,
+                temperature,
                messages: vec![request_message],
            }
        }))
@@ -772,7 +776,7 @@ impl CodegenAlternative {
        cx: &mut Context<CodegenAlternative>,
    ) {
        let transaction = self.buffer.update(cx, |buffer, cx| {
-            // Avoid grouping assistant edits with user edits.
+            // Avoid grouping agent edits with user edits.
            buffer.finalize_last_transaction(cx);
            buffer.start_transaction(cx);
            buffer.edit(edits, None, cx);
@@ -781,7 +785,7 @@ impl CodegenAlternative {

        if let Some(transaction) = transaction {
            if let Some(first_transaction) = self.transformation_transaction_id {
-                // Group all assistant edits into the first transaction.
+                // Group all agent edits into the first transaction.
                self.buffer.update(cx, |buffer, cx| {
                    buffer.merge_transactions(transaction, first_transaction, cx)
                });
@@ -1095,9 +1099,7 @@ mod tests {

    #[gpui::test(iterations = 10)]
    async fn test_transform_autoindent(cx: &mut TestAppContext, mut rng: StdRng) {
-        cx.set_global(cx.update(SettingsStore::test));
-        cx.update(language_model::LanguageModelRegistry::test);
-        cx.update(language_settings::init);
+        init_test(cx);

        let text = indoc! {"
            fn main() {
@@ -1167,8 +1169,7 @@ mod tests {
        cx: &mut TestAppContext,
        mut rng: StdRng,
    ) {
-        cx.set_global(cx.update(SettingsStore::test));
-        cx.update(language_settings::init);
+        init_test(cx);

        let text = indoc! {"
            fn main() {
@@ -1237,9 +1238,7 @@ mod tests {
        cx: &mut TestAppContext,
        mut rng: StdRng,
    ) {
-        cx.update(LanguageModelRegistry::test);
-        cx.set_global(cx.update(SettingsStore::test));
-        cx.update(language_settings::init);
+        init_test(cx);

        let text = concat!(
            "fn main() {\n",
@@ -1305,9 +1304,7 @@ mod tests {

    #[gpui::test(iterations = 10)]
    async fn test_autoindent_respects_tabs_in_selection(cx: &mut TestAppContext) {
-        cx.update(LanguageModelRegistry::test);
-        cx.set_global(cx.update(SettingsStore::test));
-        cx.update(language_settings::init);
+        init_test(cx);

        let text = indoc! {"
            func main() {
@@ -1367,9 +1364,7 @@ mod tests {

    #[gpui::test]
    async fn test_inactive_codegen_alternative(cx: &mut TestAppContext) {
-        cx.update(LanguageModelRegistry::test);
-        cx.set_global(cx.update(SettingsStore::test));
-        cx.update(language_settings::init);
+        init_test(cx);

        let text = indoc! {"
            fn main() {
@@ -1473,6 +1468,13 @@ mod tests {
        }
    }

+    fn init_test(cx: &mut TestAppContext) {
+        cx.update(LanguageModelRegistry::test);
+        cx.set_global(cx.update(SettingsStore::test));
+        cx.update(Project::init_settings);
+        cx.update(language_settings::init);
+    }
+
    fn simulate_response_stream(
        codegen: Entity<CodegenAlternative>,
        cx: &mut TestAppContext,
--- a/crates/agent/src/context.rs
+++ b/crates/agent/src/context.rs
@@ -3,6 +3,7 @@ use std::hash::{Hash, Hasher};
 use std::path::PathBuf;
 use std::{ops::Range, path::Path, sync::Arc};

+use assistant_context_editor::AssistantContext;
 use assistant_tool::outline;
 use collections::{HashMap, HashSet};
 use editor::display_map::CreaseId;
@@ -33,6 +34,7 @@ pub enum ContextKind {
    Selection,
    FetchedUrl,
    Thread,
+    TextThread,
    Rules,
    Image,
 }
@@ -46,6 +48,7 @@ impl ContextKind {
            ContextKind::Selection => IconName::Context,
            ContextKind::FetchedUrl => IconName::Globe,
            ContextKind::Thread => IconName::MessageBubbles,
+            ContextKind::TextThread => IconName::MessageBubbles,
            ContextKind::Rules => RULES_ICON,
            ContextKind::Image => IconName::Image,
        }
@@ -65,6 +68,7 @@ pub enum AgentContextHandle {
    Selection(SelectionContextHandle),
    FetchedUrl(FetchedUrlContext),
    Thread(ThreadContextHandle),
+    TextThread(TextThreadContextHandle),
    Rules(RulesContextHandle),
    Image(ImageContext),
 }
@@ -78,6 +82,7 @@ impl AgentContextHandle {
            Self::Selection(context) => context.context_id,
            Self::FetchedUrl(context) => context.context_id,
            Self::Thread(context) => context.context_id,
+            Self::TextThread(context) => context.context_id,
            Self::Rules(context) => context.context_id,
            Self::Image(context) => context.context_id,
        }
@@ -98,6 +103,7 @@ pub enum AgentContext {
    Selection(SelectionContext),
    FetchedUrl(FetchedUrlContext),
    Thread(ThreadContext),
+    TextThread(TextThreadContext),
    Rules(RulesContext),
    Image(ImageContext),
 }
@@ -115,6 +121,9 @@ impl AgentContext {
            }
            AgentContext::FetchedUrl(context) => AgentContextHandle::FetchedUrl(context.clone()),
            AgentContext::Thread(context) => AgentContextHandle::Thread(context.handle.clone()),
+            AgentContext::TextThread(context) => {
+                AgentContextHandle::TextThread(context.handle.clone())
+            }
            AgentContext::Rules(context) => AgentContextHandle::Rules(context.handle.clone()),
            AgentContext::Image(context) => AgentContextHandle::Image(context.clone()),
        }
@@ -609,6 +618,54 @@ impl Display for ThreadContext {
    }
 }

+#[derive(Debug, Clone)]
+pub struct TextThreadContextHandle {
+    pub context: Entity<AssistantContext>,
+    pub context_id: ContextId,
+}
+
+#[derive(Debug, Clone)]
+pub struct TextThreadContext {
+    pub handle: TextThreadContextHandle,
+    pub title: SharedString,
+    pub text: SharedString,
+}
+
+impl TextThreadContextHandle {
+    // pub fn lookup_key() ->
+    pub fn eq_for_key(&self, other: &Self) -> bool {
+        self.context == other.context
+    }
+
+    pub fn hash_for_key<H: Hasher>(&self, state: &mut H) {
+        self.context.hash(state)
+    }
+
+    pub fn title(&self, cx: &App) -> SharedString {
+        self.context.read(cx).summary_or_default()
+    }
+
+    fn load(self, cx: &App) -> Task<Option<(AgentContext, Vec<Entity<Buffer>>)>> {
+        let title = self.title(cx);
+        let text = self.context.read(cx).to_xml(cx);
+        let context = AgentContext::TextThread(TextThreadContext {
+            title,
+            text: text.into(),
+            handle: self,
+        });
+        Task::ready(Some((context, vec![])))
+    }
+}
+
+impl Display for TextThreadContext {
+    fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
+        // TODO: escape title?
+        write!(f, "<text_thread title=\"{}\">\n", self.title)?;
+        write!(f, "{}", self.text.trim())?;
+        write!(f, "\n</text_thread>")
+    }
+}
+
 #[derive(Debug, Clone)]
 pub struct RulesContextHandle {
    pub prompt_id: UserPromptId,
@@ -785,6 +842,7 @@ pub fn load_context(
            AgentContextHandle::Selection(context) => load_tasks.push(context.load(cx)),
            AgentContextHandle::FetchedUrl(context) => load_tasks.push(context.load()),
            AgentContextHandle::Thread(context) => load_tasks.push(context.load(cx)),
+            AgentContextHandle::TextThread(context) => load_tasks.push(context.load(cx)),
            AgentContextHandle::Rules(context) => load_tasks.push(context.load(prompt_store, cx)),
            AgentContextHandle::Image(context) => load_tasks.push(context.load(cx)),
        }
@@ -810,6 +868,7 @@ pub fn load_context(
        let mut selection_context = Vec::new();
        let mut fetched_url_context = Vec::new();
        let mut thread_context = Vec::new();
+        let mut text_thread_context = Vec::new();
        let mut rules_context = Vec::new();
        let mut images = Vec::new();
        for context in &contexts {
@@ -820,17 +879,21 @@ pub fn load_context(
                AgentContext::Selection(context) => selection_context.push(context),
                AgentContext::FetchedUrl(context) => fetched_url_context.push(context),
                AgentContext::Thread(context) => thread_context.push(context),
+                AgentContext::TextThread(context) => text_thread_context.push(context),
                AgentContext::Rules(context) => rules_context.push(context),
                AgentContext::Image(context) => images.extend(context.image()),
            }
        }

+        // Use empty text if there are no contexts that contribute to text (everything but image
+        // context).
        if file_context.is_empty()
            && directory_context.is_empty()
            && symbol_context.is_empty()
            && selection_context.is_empty()
            && fetched_url_context.is_empty()
            && thread_context.is_empty()
+            && text_thread_context.is_empty()
            && rules_context.is_empty()
        {
            return ContextLoadResult {
@@ -903,6 +966,15 @@ pub fn load_context(
            text.push_str("</conversation_threads>\n");
        }

+        if !text_thread_context.is_empty() {
+            text.push_str("<text_threads>");
+            for context in text_thread_context {
+                text.push('\n');
+                let _ = writeln!(text, "{context}");
+            }
+            text.push_str("<text_threads>");
+        }
+
        if !rules_context.is_empty() {
            text.push_str(
                "<user_rules>\n\
@@ -1019,6 +1091,11 @@ impl PartialEq for AgentContextKey {
                    return context.eq_for_key(other_context);
                }
            }
+            AgentContextHandle::TextThread(context) => {
+                if let AgentContextHandle::TextThread(other_context) = &other.0 {
+                    return context.eq_for_key(other_context);
+                }
+            }
        }
        false
    }
@@ -1033,6 +1110,7 @@ impl Hash for AgentContextKey {
            AgentContextHandle::Selection(context) => context.hash_for_key(state),
            AgentContextHandle::FetchedUrl(context) => context.hash_for_key(state),
            AgentContextHandle::Thread(context) => context.hash_for_key(state),
+            AgentContextHandle::TextThread(context) => context.hash_for_key(state),
            AgentContextHandle::Rules(context) => context.hash_for_key(state),
            AgentContextHandle::Image(context) => context.hash_for_key(state),
        }
--- a/crates/agent/src/context_picker.rs
+++ b/crates/agent/src/context_picker.rs
@@ -6,7 +6,7 @@ mod symbol_context_picker;
 mod thread_context_picker;

 use std::ops::Range;
-use std::path::PathBuf;
+use std::path::{Path, PathBuf};
 use std::sync::Arc;

 use anyhow::{Result, anyhow};
@@ -22,11 +22,14 @@ use gpui::{
 };
 use language::Buffer;
 use multi_buffer::MultiBufferRow;
+use paths::contexts_dir;
 use project::{Entry, ProjectPath};
 use prompt_store::{PromptStore, UserPromptId};
 use rules_context_picker::{RulesContextEntry, RulesContextPicker};
 use symbol_context_picker::SymbolContextPicker;
-use thread_context_picker::{ThreadContextEntry, ThreadContextPicker, render_thread_context_entry};
+use thread_context_picker::{
+    ThreadContextEntry, ThreadContextPicker, render_thread_context_entry, unordered_thread_entries,
+};
 use ui::{
    ButtonLike, ContextMenu, ContextMenuEntry, ContextMenuItem, Disclosure, TintColor, prelude::*,
 };
@@ -37,7 +40,7 @@ use crate::AssistantPanel;
 use crate::context::RULES_ICON;
 use crate::context_store::ContextStore;
 use crate::thread::ThreadId;
-use crate::thread_store::ThreadStore;
+use crate::thread_store::{TextThreadStore, ThreadStore};

 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
 enum ContextPickerEntry {
@@ -164,6 +167,7 @@ pub(super) struct ContextPicker {
    workspace: WeakEntity<Workspace>,
    context_store: WeakEntity<ContextStore>,
    thread_store: Option<WeakEntity<ThreadStore>>,
+    text_thread_store: Option<WeakEntity<TextThreadStore>>,
    prompt_store: Option<Entity<PromptStore>>,
    _subscriptions: Vec<Subscription>,
 }
@@ -172,6 +176,7 @@ impl ContextPicker {
    pub fn new(
        workspace: WeakEntity<Workspace>,
        thread_store: Option<WeakEntity<ThreadStore>>,
+        text_thread_store: Option<WeakEntity<TextThreadStore>>,
        context_store: WeakEntity<ContextStore>,
        window: &mut Window,
        cx: &mut Context<Self>,
@@ -208,6 +213,7 @@ impl ContextPicker {
            workspace,
            context_store,
            thread_store,
+            text_thread_store,
            prompt_store,
            _subscriptions: subscriptions,
        }
@@ -340,10 +346,15 @@ impl ContextPicker {
                    }));
                }
                ContextPickerMode::Thread => {
-                    if let Some(thread_store) = self.thread_store.as_ref() {
+                    if let Some((thread_store, text_thread_store)) = self
+                        .thread_store
+                        .as_ref()
+                        .zip(self.text_thread_store.as_ref())
+                    {
                        self.mode = ContextPickerState::Thread(cx.new(|cx| {
                            ThreadContextPicker::new(
                                thread_store.clone(),
+                                text_thread_store.clone(),
                                context_picker.clone(),
                                self.context_store.clone(),
                                window,
@@ -414,9 +425,9 @@ impl ContextPicker {
                        render_thread_context_entry(&view_thread, context_store.clone(), cx)
                            .into_any()
                    },
-                    move |_window, cx| {
+                    move |window, cx| {
                        context_picker.update(cx, |this, cx| {
-                            this.add_recent_thread(thread.clone(), cx)
+                            this.add_recent_thread(thread.clone(), window, cx)
                                .detach_and_log_err(cx);
                        })
                    },
@@ -447,30 +458,54 @@ impl ContextPicker {

    fn add_recent_thread(
        &self,
-        thread: ThreadContextEntry,
+        entry: ThreadContextEntry,
+        window: &mut Window,
        cx: &mut Context<Self>,
    ) -> Task<Result<()>> {
        let Some(context_store) = self.context_store.upgrade() else {
            return Task::ready(Err(anyhow!("context store not available")));
        };

-        let Some(thread_store) = self
-            .thread_store
-            .as_ref()
-            .and_then(|thread_store| thread_store.upgrade())
-        else {
-            return Task::ready(Err(anyhow!("thread store not available")));
-        };
+        match entry {
+            ThreadContextEntry::Thread { id, .. } => {
+                let Some(thread_store) = self
+                    .thread_store
+                    .as_ref()
+                    .and_then(|thread_store| thread_store.upgrade())
+                else {
+                    return Task::ready(Err(anyhow!("thread store not available")));
+                };

-        let open_thread_task = thread_store.update(cx, |this, cx| this.open_thread(&thread.id, cx));
-        cx.spawn(async move |this, cx| {
-            let thread = open_thread_task.await?;
-            context_store.update(cx, |context_store, cx| {
-                context_store.add_thread(thread, true, cx);
-            })?;
+                let open_thread_task =
+                    thread_store.update(cx, |this, cx| this.open_thread(&id, window, cx));
+                cx.spawn(async move |this, cx| {
+                    let thread = open_thread_task.await?;
+                    context_store.update(cx, |context_store, cx| {
+                        context_store.add_thread(thread, true, cx);
+                    })?;
+                    this.update(cx, |_this, cx| cx.notify())
+                })
+            }
+            ThreadContextEntry::Context { path, .. } => {
+                let Some(text_thread_store) = self
+                    .text_thread_store
+                    .as_ref()
+                    .and_then(|thread_store| thread_store.upgrade())
+                else {
+                    return Task::ready(Err(anyhow!("text thread store not available")));
+                };

-            this.update(cx, |_this, cx| cx.notify())
-        })
+                let task = text_thread_store
+                    .update(cx, |this, cx| this.open_local_context(path.clone(), cx));
+                cx.spawn(async move |this, cx| {
+                    let thread = task.await?;
+                    context_store.update(cx, |context_store, cx| {
+                        context_store.add_text_thread(thread, true, cx);
+                    })?;
+                    this.update(cx, |_this, cx| cx.notify())
+                })
+            }
+        }
    }

    fn recent_entries(&self, cx: &mut App) -> Vec<RecentEntry> {
@@ -485,6 +520,7 @@ impl ContextPicker {
        recent_context_picker_entries(
            context_store,
            self.thread_store.clone(),
+            self.text_thread_store.clone(),
            workspace,
            None,
            cx,
@@ -583,6 +619,7 @@ fn available_context_picker_entries(
 fn recent_context_picker_entries(
    context_store: Entity<ContextStore>,
    thread_store: Option<WeakEntity<ThreadStore>>,
+    text_thread_store: Option<WeakEntity<TextThreadStore>>,
    workspace: Entity<Workspace>,
    exclude_path: Option<ProjectPath>,
    cx: &App,
@@ -612,24 +649,34 @@ fn recent_context_picker_entries(

    let active_thread_id = workspace
        .panel::<AssistantPanel>(cx)
-        .map(|panel| panel.read(cx).active_thread(cx).read(cx).id());
+        .and_then(|panel| Some(panel.read(cx).active_thread()?.read(cx).id()));
+
+    if let Some((thread_store, text_thread_store)) = thread_store
+        .and_then(|store| store.upgrade())
+        .zip(text_thread_store.and_then(|store| store.upgrade()))
+    {
+        let mut threads = unordered_thread_entries(thread_store, text_thread_store, cx)
+            .filter(|(_, thread)| match thread {
+                ThreadContextEntry::Thread { id, .. } => {
+                    Some(id) != active_thread_id && !current_threads.contains(id)
+                }
+                ThreadContextEntry::Context { .. } => true,
+            })
+            .collect::<Vec<_>>();
+
+        const RECENT_COUNT: usize = 2;
+        if threads.len() > RECENT_COUNT {
+            threads.select_nth_unstable_by_key(RECENT_COUNT - 1, |(updated_at, _)| {
+                std::cmp::Reverse(*updated_at)
+            });
+            threads.truncate(RECENT_COUNT);
+        }
+        threads.sort_unstable_by_key(|(updated_at, _)| std::cmp::Reverse(*updated_at));

-    if let Some(thread_store) = thread_store.and_then(|thread_store| thread_store.upgrade()) {
        recent.extend(
-            thread_store
-                .read(cx)
-                .reverse_chronological_threads()
+            threads
                .into_iter()
-                .filter(|thread| {
-                    Some(&thread.id) != active_thread_id && !current_threads.contains(&thread.id)
-                })
-                .take(2)
-                .map(|thread| {
-                    RecentEntry::Thread(ThreadContextEntry {
-                        id: thread.id,
-                        summary: thread.summary,
-                    })
-                }),
+                .map(|(_, thread)| RecentEntry::Thread(thread)),
        );
    }

@@ -827,6 +874,7 @@ pub enum MentionLink {
    Selection(ProjectPath, Range<usize>),
    Fetch(String),
    Thread(ThreadId),
+    TextThread(Arc<Path>),
    Rule(UserPromptId),
 }

@@ -838,6 +886,8 @@ impl MentionLink {
    const FETCH: &str = "@fetch";
    const RULE: &str = "@rule";

+    const TEXT_THREAD_URL_PREFIX: &str = "text-thread://";
+
    const SEPARATOR: &str = ":";

    pub fn is_valid(url: &str) -> bool {
@@ -877,7 +927,22 @@ impl MentionLink {
    }

    pub fn for_thread(thread: &ThreadContextEntry) -> String {
-        format!("[@{}]({}:{})", thread.summary, Self::THREAD, thread.id)
+        match thread {
+            ThreadContextEntry::Thread { id, title } => {
+                format!("[@{}]({}:{})", title, Self::THREAD, id)
+            }
+            ThreadContextEntry::Context { path, title } => {
+                let filename = path.file_name().unwrap_or_default();
+                let escaped_filename = urlencoding::encode(&filename.to_string_lossy()).to_string();
+                format!(
+                    "[@{}]({}:{}{})",
+                    title,
+                    Self::THREAD,
+                    Self::TEXT_THREAD_URL_PREFIX,
+                    escaped_filename
+                )
+            }
+        }
    }

    pub fn for_fetch(url: &str) -> String {
@@ -939,8 +1004,15 @@ impl MentionLink {
                Some(MentionLink::Selection(project_path, line_range))
            }
            Self::THREAD => {
-                let thread_id = ThreadId::from(argument);
-                Some(MentionLink::Thread(thread_id))
+                if let Some(encoded_filename) = argument.strip_prefix(Self::TEXT_THREAD_URL_PREFIX)
+                {
+                    let filename = urlencoding::decode(encoded_filename).ok()?;
+                    let path = contexts_dir().join(filename.as_ref()).into();
+                    Some(MentionLink::TextThread(path))
+                } else {
+                    let thread_id = ThreadId::from(argument);
+                    Some(MentionLink::Thread(thread_id))
+                }
            }
            Self::FETCH => Some(MentionLink::Fetch(argument.to_string())),
            Self::RULE => {
--- a/crates/agent/src/context_picker/completion_provider.rs
+++ b/crates/agent/src/context_picker/completion_provider.rs
@@ -25,7 +25,7 @@ use workspace::Workspace;
 use crate::Thread;
 use crate::context::{AgentContextHandle, AgentContextKey, ContextCreasesAddon, RULES_ICON};
 use crate::context_store::ContextStore;
-use crate::thread_store::ThreadStore;
+use crate::thread_store::{TextThreadStore, ThreadStore};

 use super::fetch_context_picker::fetch_url_content;
 use super::file_context_picker::{FileMatch, search_files};
@@ -72,6 +72,7 @@ fn search(
    recent_entries: Vec<RecentEntry>,
    prompt_store: Option<Entity<PromptStore>>,
    thread_store: Option<WeakEntity<ThreadStore>>,
+    text_thread_context_store: Option<WeakEntity<assistant_context_editor::ContextStore>>,
    workspace: Entity<Workspace>,
    cx: &mut App,
 ) -> Task<Vec<Match>> {
@@ -101,9 +102,18 @@ fn search(
        }

        Some(ContextPickerMode::Thread) => {
-            if let Some(thread_store) = thread_store.as_ref().and_then(|t| t.upgrade()) {
-                let search_threads_task =
-                    search_threads(query.clone(), cancellation_flag.clone(), thread_store, cx);
+            if let Some((thread_store, context_store)) = thread_store
+                .as_ref()
+                .and_then(|t| t.upgrade())
+                .zip(text_thread_context_store.as_ref().and_then(|t| t.upgrade()))
+            {
+                let search_threads_task = search_threads(
+                    query.clone(),
+                    cancellation_flag.clone(),
+                    thread_store,
+                    context_store,
+                    cx,
+                );
                cx.background_spawn(async move {
                    search_threads_task
                        .await
@@ -236,6 +246,7 @@ pub struct ContextPickerCompletionProvider {
    workspace: WeakEntity<Workspace>,
    context_store: WeakEntity<ContextStore>,
    thread_store: Option<WeakEntity<ThreadStore>>,
+    text_thread_store: Option<WeakEntity<TextThreadStore>>,
    editor: WeakEntity<Editor>,
    excluded_buffer: Option<WeakEntity<Buffer>>,
 }
@@ -245,6 +256,7 @@ impl ContextPickerCompletionProvider {
        workspace: WeakEntity<Workspace>,
        context_store: WeakEntity<ContextStore>,
        thread_store: Option<WeakEntity<ThreadStore>>,
+        text_thread_store: Option<WeakEntity<TextThreadStore>>,
        editor: WeakEntity<Editor>,
        exclude_buffer: Option<WeakEntity<Buffer>>,
    ) -> Self {
@@ -252,6 +264,7 @@ impl ContextPickerCompletionProvider {
            workspace,
            context_store,
            thread_store,
+            text_thread_store,
            editor,
            excluded_buffer: exclude_buffer,
        }
@@ -400,6 +413,7 @@ impl ContextPickerCompletionProvider {
        editor: Entity<Editor>,
        context_store: Entity<ContextStore>,
        thread_store: Entity<ThreadStore>,
+        text_thread_store: Entity<TextThreadStore>,
    ) -> Completion {
        let icon_for_completion = if recent {
            IconName::HistoryRerun
@@ -411,38 +425,58 @@ impl ContextPickerCompletionProvider {
        Completion {
            replace_range: source_range.clone(),
            new_text,
-            label: CodeLabel::plain(thread_entry.summary.to_string(), None),
+            label: CodeLabel::plain(thread_entry.title().to_string(), None),
            documentation: None,
            insert_text_mode: None,
            source: project::CompletionSource::Custom,
            icon_path: Some(icon_for_completion.path().into()),
            confirm: Some(confirm_completion_callback(
                IconName::MessageBubbles.path().into(),
-                thread_entry.summary.clone(),
+                thread_entry.title().clone(),
                excerpt_id,
                source_range.start,
                new_text_len,
                editor.clone(),
                context_store.clone(),
-                move |cx| {
-                    let thread_id = thread_entry.id.clone();
-                    let context_store = context_store.clone();
-                    let thread_store = thread_store.clone();
-                    cx.spawn::<_, Option<_>>(async move |cx| {
-                        let thread: Entity<Thread> = thread_store
-                            .update(cx, |thread_store, cx| {
-                                thread_store.open_thread(&thread_id, cx)
-                            })
-                            .ok()?
-                            .await
-                            .log_err()?;
-                        let context = context_store
-                            .update(cx, |context_store, cx| {
-                                context_store.add_thread(thread, false, cx)
-                            })
-                            .ok()??;
-                        Some(context)
-                    })
+                move |window, cx| match &thread_entry {
+                    ThreadContextEntry::Thread { id, .. } => {
+                        let thread_id = id.clone();
+                        let context_store = context_store.clone();
+                        let thread_store = thread_store.clone();
+                        window.spawn::<_, Option<_>>(cx, async move |cx| {
+                            let thread: Entity<Thread> = thread_store
+                                .update_in(cx, |thread_store, window, cx| {
+                                    thread_store.open_thread(&thread_id, window, cx)
+                                })
+                                .ok()?
+                                .await
+                                .log_err()?;
+                            let context = context_store
+                                .update(cx, |context_store, cx| {
+                                    context_store.add_thread(thread, false, cx)
+                                })
+                                .ok()??;
+                            Some(context)
+                        })
+                    }
+                    ThreadContextEntry::Context { path, .. } => {
+                        let path = path.clone();
+                        let context_store = context_store.clone();
+                        let text_thread_store = text_thread_store.clone();
+                        cx.spawn::<_, Option<_>>(async move |cx| {
+                            let thread = text_thread_store
+                                .update(cx, |store, cx| store.open_local_context(path, cx))
+                                .ok()?
+                                .await
+                                .log_err()?;
+                            let context = context_store
+                                .update(cx, |context_store, cx| {
+                                    context_store.add_text_thread(thread, false, cx)
+                                })
+                                .ok()??;
+                            Some(context)
+                        })
+                    }
                },
            )),
        }
@@ -473,7 +507,7 @@ impl ContextPickerCompletionProvider {
                new_text_len,
                editor.clone(),
                context_store.clone(),
-                move |cx| {
+                move |_, cx| {
                    let user_prompt_id = rules.prompt_id;
                    let context = context_store.update(cx, |context_store, cx| {
                        context_store.add_rules(user_prompt_id, false, cx)
@@ -510,7 +544,7 @@ impl ContextPickerCompletionProvider {
                new_text_len,
                editor.clone(),
                context_store.clone(),
-                move |cx| {
+                move |_, cx| {
                    let context_store = context_store.clone();
                    let http_client = http_client.clone();
                    let url_to_fetch = url_to_fetch.clone();
@@ -595,7 +629,7 @@ impl ContextPickerCompletionProvider {
                new_text_len,
                editor,
                context_store.clone(),
-                move |cx| {
+                move |_, cx| {
                    if is_directory {
                        Task::ready(
                            context_store
@@ -666,7 +700,7 @@ impl ContextPickerCompletionProvider {
                new_text_len,
                editor.clone(),
                context_store.clone(),
-                move |cx| {
+                move |_, cx| {
                    let symbol = symbol.clone();
                    let context_store = context_store.clone();
                    let workspace = workspace.clone();
@@ -733,6 +767,7 @@ impl CompletionProvider for ContextPickerCompletionProvider {
            ..snapshot.anchor_before(state.source_range.end);

        let thread_store = self.thread_store.clone();
+        let text_thread_store = self.text_thread_store.clone();
        let editor = self.editor.clone();
        let http_client = workspace.read(cx).client().http_client();

@@ -749,6 +784,7 @@ impl CompletionProvider for ContextPickerCompletionProvider {
        let recent_entries = recent_context_picker_entries(
            context_store.clone(),
            thread_store.clone(),
+            text_thread_store.clone(),
            workspace.clone(),
            excluded_path.clone(),
            cx,
@@ -768,6 +804,7 @@ impl CompletionProvider for ContextPickerCompletionProvider {
            recent_entries,
            prompt_store,
            thread_store.clone(),
+            text_thread_store.clone(),
            workspace.clone(),
            cx,
        );
@@ -819,6 +856,8 @@ impl CompletionProvider for ContextPickerCompletionProvider {
                            thread, is_recent, ..
                        }) => {
                            let thread_store = thread_store.as_ref().and_then(|t| t.upgrade())?;
+                            let text_thread_store =
+                                text_thread_store.as_ref().and_then(|t| t.upgrade())?;
                            Some(Self::completion_for_thread(
                                thread,
                                excerpt_id,
@@ -827,6 +866,7 @@ impl CompletionProvider for ContextPickerCompletionProvider {
                                editor.clone(),
                                context_store.clone(),
                                thread_store,
+                                text_thread_store,
                            ))
                        }

@@ -914,10 +954,13 @@ fn confirm_completion_callback(
    content_len: usize,
    editor: Entity<Editor>,
    context_store: Entity<ContextStore>,
-    add_context_fn: impl Fn(&mut App) -> Task<Option<AgentContextHandle>> + Send + Sync + 'static,
+    add_context_fn: impl Fn(&mut Window, &mut App) -> Task<Option<AgentContextHandle>>
+    + Send
+    + Sync
+    + 'static,
 ) -> Arc<dyn Fn(CompletionIntent, &mut Window, &mut App) -> bool + Send + Sync> {
    Arc::new(move |_, window, cx| {
-        let context = add_context_fn(cx);
+        let context = add_context_fn(window, cx);

        let crease_text = crease_text.clone();
        let crease_icon_path = crease_icon_path.clone();
@@ -1247,6 +1290,7 @@ mod tests {
                workspace.downgrade(),
                context_store.downgrade(),
                None,
+                None,
                editor_entity,
                last_opened_buffer,
            ))));
--- a/crates/agent/src/context_picker/thread_context_picker.rs
+++ b/crates/agent/src/context_picker/thread_context_picker.rs
@@ -1,6 +1,8 @@
+use std::path::Path;
 use std::sync::Arc;
 use std::sync::atomic::AtomicBool;

+use chrono::{DateTime, Utc};
 use fuzzy::StringMatchCandidate;
 use gpui::{App, DismissEvent, Entity, FocusHandle, Focusable, Task, WeakEntity};
 use picker::{Picker, PickerDelegate};
@@ -9,7 +11,7 @@ use ui::{ListItem, prelude::*};
 use crate::context_picker::ContextPicker;
 use crate::context_store::{self, ContextStore};
 use crate::thread::ThreadId;
-use crate::thread_store::ThreadStore;
+use crate::thread_store::{TextThreadStore, ThreadStore};

 pub struct ThreadContextPicker {
    picker: Entity<Picker<ThreadContextPickerDelegate>>,
@@ -18,13 +20,18 @@ pub struct ThreadContextPicker {
 impl ThreadContextPicker {
    pub fn new(
        thread_store: WeakEntity<ThreadStore>,
+        text_thread_context_store: WeakEntity<TextThreadStore>,
        context_picker: WeakEntity<ContextPicker>,
        context_store: WeakEntity<context_store::ContextStore>,
        window: &mut Window,
        cx: &mut Context<Self>,
    ) -> Self {
-        let delegate =
-            ThreadContextPickerDelegate::new(thread_store, context_picker, context_store);
+        let delegate = ThreadContextPickerDelegate::new(
+            thread_store,
+            text_thread_context_store,
+            context_picker,
+            context_store,
+        );
        let picker = cx.new(|cx| Picker::uniform_list(delegate, window, cx));

        ThreadContextPicker { picker }
@@ -44,13 +51,29 @@ impl Render for ThreadContextPicker {
 }

 #[derive(Debug, Clone)]
-pub struct ThreadContextEntry {
-    pub id: ThreadId,
-    pub summary: SharedString,
+pub enum ThreadContextEntry {
+    Thread {
+        id: ThreadId,
+        title: SharedString,
+    },
+    Context {
+        path: Arc<Path>,
+        title: SharedString,
+    },
+}
+
+impl ThreadContextEntry {
+    pub fn title(&self) -> &SharedString {
+        match self {
+            Self::Thread { title, .. } => title,
+            Self::Context { title, .. } => title,
+        }
+    }
 }

 pub struct ThreadContextPickerDelegate {
    thread_store: WeakEntity<ThreadStore>,
+    text_thread_store: WeakEntity<TextThreadStore>,
    context_picker: WeakEntity<ContextPicker>,
    context_store: WeakEntity<context_store::ContextStore>,
    matches: Vec<ThreadContextEntry>,
@@ -60,6 +83,7 @@ pub struct ThreadContextPickerDelegate {
 impl ThreadContextPickerDelegate {
    pub fn new(
        thread_store: WeakEntity<ThreadStore>,
+        text_thread_store: WeakEntity<TextThreadStore>,
        context_picker: WeakEntity<ContextPicker>,
        context_store: WeakEntity<context_store::ContextStore>,
    ) -> Self {
@@ -67,6 +91,7 @@ impl ThreadContextPickerDelegate {
            thread_store,
            context_picker,
            context_store,
+            text_thread_store,
            matches: Vec::new(),
            selected_index: 0,
        }
@@ -103,11 +128,21 @@ impl PickerDelegate for ThreadContextPickerDelegate {
        window: &mut Window,
        cx: &mut Context<Picker<Self>>,
    ) -> Task<()> {
-        let Some(thread_store) = self.thread_store.upgrade() else {
+        let Some((thread_store, text_thread_context_store)) = self
+            .thread_store
+            .upgrade()
+            .zip(self.text_thread_store.upgrade())
+        else {
            return Task::ready(());
        };

-        let search_task = search_threads(query, Arc::new(AtomicBool::default()), thread_store, cx);
+        let search_task = search_threads(
+            query,
+            Arc::new(AtomicBool::default()),
+            thread_store,
+            text_thread_context_store,
+            cx,
+        );
        cx.spawn_in(window, async move |this, cx| {
            let matches = search_task.await;
            this.update(cx, |this, cx| {
@@ -119,29 +154,53 @@ impl PickerDelegate for ThreadContextPickerDelegate {
        })
    }

-    fn confirm(&mut self, _secondary: bool, _window: &mut Window, cx: &mut Context<Picker<Self>>) {
+    fn confirm(&mut self, _secondary: bool, window: &mut Window, cx: &mut Context<Picker<Self>>) {
        let Some(entry) = self.matches.get(self.selected_index) else {
            return;
        };

-        let Some(thread_store) = self.thread_store.upgrade() else {
-            return;
-        };
+        match entry {
+            ThreadContextEntry::Thread { id, .. } => {
+                let Some(thread_store) = self.thread_store.upgrade() else {
+                    return;
+                };
+                let open_thread_task =
+                    thread_store.update(cx, |this, cx| this.open_thread(&id, window, cx));

-        let open_thread_task = thread_store.update(cx, |this, cx| this.open_thread(&entry.id, cx));
-
-        cx.spawn(async move |this, cx| {
-            let thread = open_thread_task.await?;
-            this.update(cx, |this, cx| {
-                this.delegate
-                    .context_store
-                    .update(cx, |context_store, cx| {
-                        context_store.add_thread(thread, true, cx)
+                cx.spawn(async move |this, cx| {
+                    let thread = open_thread_task.await?;
+                    this.update(cx, |this, cx| {
+                        this.delegate
+                            .context_store
+                            .update(cx, |context_store, cx| {
+                                context_store.add_thread(thread, true, cx)
+                            })
+                            .ok();
                    })
-                    .ok();
-            })
-        })
-        .detach_and_log_err(cx);
+                })
+                .detach_and_log_err(cx);
+            }
+            ThreadContextEntry::Context { path, .. } => {
+                let Some(text_thread_store) = self.text_thread_store.upgrade() else {
+                    return;
+                };
+                let task = text_thread_store
+                    .update(cx, |this, cx| this.open_local_context(path.clone(), cx));
+
+                cx.spawn(async move |this, cx| {
+                    let thread = task.await?;
+                    this.update(cx, |this, cx| {
+                        this.delegate
+                            .context_store
+                            .update(cx, |context_store, cx| {
+                                context_store.add_text_thread(thread, true, cx)
+                            })
+                            .ok();
+                    })
+                })
+                .detach_and_log_err(cx);
+            }
+        }
    }

    fn dismissed(&mut self, _window: &mut Window, cx: &mut Context<Picker<Self>>) {
@@ -168,13 +227,20 @@ impl PickerDelegate for ThreadContextPickerDelegate {
 }

 pub fn render_thread_context_entry(
-    thread: &ThreadContextEntry,
+    entry: &ThreadContextEntry,
    context_store: WeakEntity<ContextStore>,
    cx: &mut App,
 ) -> Div {
-    let added = context_store.upgrade().map_or(false, |ctx_store| {
-        ctx_store.read(cx).includes_thread(&thread.id)
-    });
+    let is_added = match entry {
+        ThreadContextEntry::Thread { id, .. } => context_store
+            .upgrade()
+            .map_or(false, |ctx_store| ctx_store.read(cx).includes_thread(&id)),
+        ThreadContextEntry::Context { path, .. } => {
+            context_store.upgrade().map_or(false, |ctx_store| {
+                ctx_store.read(cx).includes_text_thread(path)
+            })
+        }
+    };

    h_flex()
        .gap_1p5()
@@ -189,9 +255,9 @@ pub fn render_thread_context_entry(
                        .size(IconSize::XSmall)
                        .color(Color::Muted),
                )
-                .child(Label::new(thread.summary.clone()).truncate()),
+                .child(Label::new(entry.title().clone()).truncate()),
        )
-        .when(added, |el| {
+        .when(is_added, |el| {
            el.child(
                h_flex()
                    .gap_1()
@@ -211,28 +277,54 @@ pub struct ThreadMatch {
    pub is_recent: bool,
 }

+pub fn unordered_thread_entries(
+    thread_store: Entity<ThreadStore>,
+    text_thread_store: Entity<TextThreadStore>,
+    cx: &App,
+) -> impl Iterator<Item = (DateTime<Utc>, ThreadContextEntry)> {
+    let threads = thread_store.read(cx).unordered_threads().map(|thread| {
+        (
+            thread.updated_at,
+            ThreadContextEntry::Thread {
+                id: thread.id.clone(),
+                title: thread.summary.clone(),
+            },
+        )
+    });
+
+    let text_threads = text_thread_store
+        .read(cx)
+        .unordered_contexts()
+        .map(|context| {
+            (
+                context.mtime.to_utc(),
+                ThreadContextEntry::Context {
+                    path: context.path.clone(),
+                    title: context.title.clone().into(),
+                },
+            )
+        });
+
+    threads.chain(text_threads)
+}
+
 pub(crate) fn search_threads(
    query: String,
    cancellation_flag: Arc<AtomicBool>,
    thread_store: Entity<ThreadStore>,
+    text_thread_store: Entity<TextThreadStore>,
    cx: &mut App,
 ) -> Task<Vec<ThreadMatch>> {
-    let threads = thread_store
-        .read(cx)
-        .reverse_chronological_threads()
-        .into_iter()
-        .map(|thread| ThreadContextEntry {
-            id: thread.id,
-            summary: thread.summary,
-        })
-        .collect::<Vec<_>>();
+    let mut threads =
+        unordered_thread_entries(thread_store, text_thread_store, cx).collect::<Vec<_>>();
+    threads.sort_unstable_by_key(|(updated_at, _)| std::cmp::Reverse(*updated_at));

    let executor = cx.background_executor().clone();
    cx.background_spawn(async move {
        if query.is_empty() {
            threads
                .into_iter()
-                .map(|thread| ThreadMatch {
+                .map(|(_, thread)| ThreadMatch {
                    thread,
                    is_recent: false,
                })
@@ -241,7 +333,7 @@ pub(crate) fn search_threads(
            let candidates = threads
                .iter()
                .enumerate()
-                .map(|(id, thread)| StringMatchCandidate::new(id, &thread.summary))
+                .map(|(id, (_, thread))| StringMatchCandidate::new(id, &thread.title()))
                .collect::<Vec<_>>();
            let matches = fuzzy::match_strings(
                &candidates,
@@ -256,7 +348,7 @@ pub(crate) fn search_threads(
            matches
                .into_iter()
                .map(|mat| ThreadMatch {
-                    thread: threads[mat.candidate_id].clone(),
+                    thread: threads[mat.candidate_id].1.clone(),
                    is_recent: false,
                })
                .collect()
--- a/crates/agent/src/context_server_configuration.rs
+++ b/crates/agent/src/context_server_configuration.rs
@@ -1,14 +1,16 @@
 use std::sync::Arc;

 use anyhow::Context as _;
-use context_server::ContextServerDescriptorRegistry;
-use extension::ExtensionManifest;
+use context_server::ContextServerId;
+use extension::{ContextServerConfiguration, ExtensionManifest};
+use gpui::Task;
 use language::LanguageRegistry;
+use project::context_server_store::registry::ContextServerDescriptorRegistry;
 use ui::prelude::*;
 use util::ResultExt;
 use workspace::Workspace;

-use crate::{AssistantPanel, assistant_configuration::ConfigureContextServerModal};
+use crate::assistant_configuration::ConfigureContextServerModal;

 pub(crate) fn init(language_registry: Arc<LanguageRegistry>, cx: &mut App) {
    cx.observe_new(move |_: &mut Workspace, window, cx| {
@@ -53,6 +55,15 @@ pub(crate) fn init(language_registry: Arc<LanguageRegistry>, cx: &mut App) {
    .detach();
 }

+pub enum Configuration {
+    NotAvailable(ContextServerId, Option<SharedString>),
+    Required(
+        ContextServerId,
+        Option<SharedString>,
+        ContextServerConfiguration,
+    ),
+}
+
 fn show_configure_mcp_modal(
    language_registry: Arc<LanguageRegistry>,
    manifest: &Arc<ExtensionManifest>,
@@ -60,37 +71,46 @@ fn show_configure_mcp_modal(
    window: &mut Window,
    cx: &mut Context<'_, Workspace>,
 ) {
-    let Some(context_server_manager) = workspace.panel::<AssistantPanel>(cx).map(|panel| {
-        panel
-            .read(cx)
-            .thread_store()
-            .read(cx)
-            .context_server_manager()
-    }) else {
-        return;
-    };
+    let context_server_store = workspace.project().read(cx).context_server_store();
+    let repository: Option<SharedString> = manifest.repository.as_ref().map(|s| s.clone().into());

-    let registry = ContextServerDescriptorRegistry::global(cx).read(cx);
-    let project = workspace.project().clone();
+    let registry = ContextServerDescriptorRegistry::default_global(cx).read(cx);
+    let worktree_store = workspace.project().read(cx).worktree_store();
    let configuration_tasks = manifest
        .context_servers
        .keys()
        .cloned()
-        .filter_map({
+        .map({
            |key| {
-                let descriptor = registry.context_server_descriptor(&key)?;
-                Some(cx.spawn({
-                    let project = project.clone();
+                let Some(descriptor) = registry.context_server_descriptor(&key) else {
+                    return Task::ready(Configuration::NotAvailable(
+                        ContextServerId(key),
+                        repository.clone(),
+                    ));
+                };
+                cx.spawn({
+                    let repository_url = repository.clone();
+                    let worktree_store = worktree_store.clone();
                    async move |_, cx| {
-                        descriptor
-                            .configuration(project, &cx)
+                        let configuration = descriptor
+                            .configuration(worktree_store.clone(), &cx)
                            .await
                            .context("Failed to resolve context server configuration")
                            .log_err()
-                            .flatten()
-                            .map(|config| (key, config))
+                            .flatten();
+
+                        match configuration {
+                            Some(config) => Configuration::Required(
+                                ContextServerId(key),
+                                repository_url,
+                                config,
+                            ),
+                            None => {
+                                Configuration::NotAvailable(ContextServerId(key), repository_url)
+                            }
+                        }
                    }
-                }))
+                })
            }
        })
        .collect::<Vec<_>>();
@@ -98,22 +118,22 @@ fn show_configure_mcp_modal(
    let jsonc_language = language_registry.language_for_name("jsonc");

    cx.spawn_in(window, async move |this, cx| {
-        let descriptors = futures::future::join_all(configuration_tasks).await;
+        let configurations = futures::future::join_all(configuration_tasks).await;
        let jsonc_language = jsonc_language.await.ok();

        this.update_in(cx, |this, window, cx| {
-            let modal = ConfigureContextServerModal::new(
-                descriptors.into_iter().flatten(),
-                jsonc_language,
-                context_server_manager,
-                language_registry,
-                cx.entity().downgrade(),
-                window,
-                cx,
-            );
-            if let Some(modal) = modal {
-                this.toggle_modal(window, cx, |_, _| modal);
-            }
+            let workspace = cx.entity().downgrade();
+            this.toggle_modal(window, cx, |window, cx| {
+                ConfigureContextServerModal::new(
+                    configurations.into_iter(),
+                    context_server_store,
+                    jsonc_language,
+                    language_registry,
+                    workspace,
+                    window,
+                    cx,
+                )
+            });
        })
    })
    .detach();
--- a/crates/context_server/src/context_server_tool.rs
+++ b/crates/context_server/src/context_server_tool.rs
@@ -2,29 +2,27 @@ use std::sync::Arc;

 use anyhow::{Result, anyhow, bail};
 use assistant_tool::{ActionLog, Tool, ToolResult, ToolSource};
+use context_server::{ContextServerId, types};
 use gpui::{AnyWindowHandle, App, Entity, Task};
-use icons::IconName;
-use language_model::{LanguageModelRequestMessage, LanguageModelToolSchemaFormat};
-use project::Project;
-
-use crate::manager::ContextServerManager;
-use crate::types;
+use language_model::{LanguageModel, LanguageModelRequestMessage, LanguageModelToolSchemaFormat};
+use project::{Project, context_server_store::ContextServerStore};
+use ui::IconName;

 pub struct ContextServerTool {
-    server_manager: Entity<ContextServerManager>,
-    server_id: Arc<str>,
+    store: Entity<ContextServerStore>,
+    server_id: ContextServerId,
    tool: types::Tool,
 }

 impl ContextServerTool {
    pub fn new(
-        server_manager: Entity<ContextServerManager>,
-        server_id: impl Into<Arc<str>>,
+        store: Entity<ContextServerStore>,
+        server_id: ContextServerId,
        tool: types::Tool,
    ) -> Self {
        Self {
-            server_manager,
-            server_id: server_id.into(),
+            store,
+            server_id,
            tool,
        }
    }
@@ -45,7 +43,7 @@ impl Tool for ContextServerTool {

    fn source(&self) -> ToolSource {
        ToolSource::ContextServer {
-            id: self.server_id.clone().into(),
+            id: self.server_id.clone().0.into(),
        }
    }

@@ -77,10 +75,11 @@ impl Tool for ContextServerTool {
        _messages: &[LanguageModelRequestMessage],
        _project: Entity<Project>,
        _action_log: Entity<ActionLog>,
+        _model: Arc<dyn LanguageModel>,
        _window: Option<AnyWindowHandle>,
        cx: &mut App,
    ) -> ToolResult {
-        if let Some(server) = self.server_manager.read(cx).get_server(&self.server_id) {
+        if let Some(server) = self.store.read(cx).get_running_server(&self.server_id) {
            let tool_name = self.tool.name.clone();
            let server_clone = server.clone();
            let input_clone = input.clone();
@@ -117,7 +116,7 @@ impl Tool for ContextServerTool {
                        }
                    }
                }
-                Ok(result)
+                Ok(result.into())
            })
            .into()
        } else {
--- a/crates/agent/src/context_store.rs
+++ b/crates/agent/src/context_store.rs
@@ -1,8 +1,9 @@
 use std::ops::Range;
-use std::path::PathBuf;
+use std::path::{Path, PathBuf};
 use std::sync::Arc;

 use anyhow::{Result, anyhow};
+use assistant_context_editor::AssistantContext;
 use collections::{HashSet, IndexSet};
 use futures::{self, FutureExt};
 use gpui::{App, Context, Entity, EventEmitter, Image, SharedString, Task, WeakEntity};
@@ -18,7 +19,7 @@ use crate::ThreadStore;
 use crate::context::{
    AgentContextHandle, AgentContextKey, ContextId, DirectoryContextHandle, FetchedUrlContext,
    FileContextHandle, ImageContext, RulesContextHandle, SelectionContextHandle,
-    SymbolContextHandle, ThreadContextHandle,
+    SymbolContextHandle, TextThreadContextHandle, ThreadContextHandle,
 };
 use crate::context_strip::SuggestedContext;
 use crate::thread::{MessageId, Thread, ThreadId};
@@ -29,6 +30,7 @@ pub struct ContextStore {
    next_context_id: ContextId,
    context_set: IndexSet<AgentContextKey>,
    context_thread_ids: HashSet<ThreadId>,
+    context_text_thread_paths: HashSet<Arc<Path>>,
 }

 pub enum ContextStoreEvent {
@@ -48,6 +50,7 @@ impl ContextStore {
            next_context_id: ContextId::zero(),
            context_set: IndexSet::default(),
            context_thread_ids: HashSet::default(),
+            context_text_thread_paths: HashSet::default(),
        }
    }

@@ -227,6 +230,31 @@ impl ContextStore {
        }
    }

+    pub fn add_text_thread(
+        &mut self,
+        context: Entity<AssistantContext>,
+        remove_if_exists: bool,
+        cx: &mut Context<Self>,
+    ) -> Option<AgentContextHandle> {
+        let context_id = self.next_context_id.post_inc();
+        let context = AgentContextHandle::TextThread(TextThreadContextHandle {
+            context,
+            context_id,
+        });
+
+        if let Some(existing) = self.context_set.get(AgentContextKey::ref_cast(&context)) {
+            if remove_if_exists {
+                self.remove_context(&context, cx);
+                None
+            } else {
+                Some(existing.as_ref().clone())
+            }
+        } else {
+            self.insert_context(context.clone(), cx);
+            Some(context)
+        }
+    }
+
    pub fn add_rules(
        &mut self,
        prompt_id: UserPromptId,
@@ -364,6 +392,18 @@ impl ContextStore {
                    );
                }
            }
+            SuggestedContext::TextThread { context, name: _ } => {
+                if let Some(context) = context.upgrade() {
+                    let context_id = self.next_context_id.post_inc();
+                    self.insert_context(
+                        AgentContextHandle::TextThread(TextThreadContextHandle {
+                            context,
+                            context_id,
+                        }),
+                        cx,
+                    );
+                }
+            }
        }
    }

@@ -380,6 +420,10 @@ impl ContextStore {
                    return false;
                }
            }
+            AgentContextHandle::TextThread(text_thread_context) => {
+                self.context_text_thread_paths
+                    .extend(text_thread_context.context.read(cx).path().cloned());
+            }
            _ => {}
        }
        let inserted = self.context_set.insert(AgentContextKey(context));
@@ -399,6 +443,11 @@ impl ContextStore {
                    self.context_thread_ids
                        .remove(thread_context.thread.read(cx).id());
                }
+                AgentContextHandle::TextThread(text_thread_context) => {
+                    if let Some(path) = text_thread_context.context.read(cx).path() {
+                        self.context_text_thread_paths.remove(path);
+                    }
+                }
                _ => {}
            }
            cx.emit(ContextStoreEvent::ContextRemoved(key));
@@ -468,6 +517,10 @@ impl ContextStore {
        self.context_thread_ids.contains(thread_id)
    }

+    pub fn includes_text_thread(&self, path: &Arc<Path>) -> bool {
+        self.context_text_thread_paths.contains(path)
+    }
+
    pub fn includes_user_rules(&self, prompt_id: UserPromptId) -> bool {
        self.context_set
            .contains(&RulesContextHandle::lookup_key(prompt_id))
@@ -496,6 +549,7 @@ impl ContextStore {
                | AgentContextHandle::Selection(_)
                | AgentContextHandle::FetchedUrl(_)
                | AgentContextHandle::Thread(_)
+                | AgentContextHandle::TextThread(_)
                | AgentContextHandle::Rules(_)
                | AgentContextHandle::Image(_) => None,
            })
--- a/crates/agent/src/context_strip.rs
+++ b/crates/agent/src/context_strip.rs
@@ -1,6 +1,7 @@
 use std::path::Path;
 use std::rc::Rc;

+use assistant_context_editor::AssistantContext;
 use collections::HashSet;
 use editor::Editor;
 use file_icons::FileIcons;
@@ -18,7 +19,7 @@ use crate::context::{AgentContextHandle, ContextKind};
 use crate::context_picker::ContextPicker;
 use crate::context_store::ContextStore;
 use crate::thread::Thread;
-use crate::thread_store::ThreadStore;
+use crate::thread_store::{TextThreadStore, ThreadStore};
 use crate::ui::{AddedContext, ContextPill};
 use crate::{
    AcceptSuggestedContext, AssistantPanel, FocusDown, FocusLeft, FocusRight, FocusUp,
@@ -43,6 +44,7 @@ impl ContextStrip {
        context_store: Entity<ContextStore>,
        workspace: WeakEntity<Workspace>,
        thread_store: Option<WeakEntity<ThreadStore>>,
+        text_thread_store: Option<WeakEntity<TextThreadStore>>,
        context_picker_menu_handle: PopoverMenuHandle<ContextPicker>,
        suggest_context_kind: SuggestContextKind,
        window: &mut Window,
@@ -52,6 +54,7 @@ impl ContextStrip {
            ContextPicker::new(
                workspace.clone(),
                thread_store.clone(),
+                text_thread_store,
                context_store.downgrade(),
                window,
                cx,
@@ -141,27 +144,42 @@ impl ContextStrip {
        }

        let workspace = self.workspace.upgrade()?;
-        let active_thread = workspace
-            .read(cx)
-            .panel::<AssistantPanel>(cx)?
-            .read(cx)
-            .active_thread(cx);
-        let weak_active_thread = active_thread.downgrade();
+        let panel = workspace.read(cx).panel::<AssistantPanel>(cx)?.read(cx);

-        let active_thread = active_thread.read(cx);
+        if let Some(active_thread) = panel.active_thread() {
+            let weak_active_thread = active_thread.downgrade();

-        if self
-            .context_store
-            .read(cx)
-            .includes_thread(active_thread.id())
-        {
-            return None;
+            let active_thread = active_thread.read(cx);
+
+            if self
+                .context_store
+                .read(cx)
+                .includes_thread(active_thread.id())
+            {
+                return None;
+            }
+
+            Some(SuggestedContext::Thread {
+                name: active_thread.summary_or_default(),
+                thread: weak_active_thread,
+            })
+        } else if let Some(active_context_editor) = panel.active_context_editor() {
+            let context = active_context_editor.read(cx).context();
+            let weak_context = context.downgrade();
+            let context = context.read(cx);
+            let path = context.path()?;
+
+            if self.context_store.read(cx).includes_text_thread(path) {
+                return None;
+            }
+
+            Some(SuggestedContext::TextThread {
+                name: context.summary_or_default(),
+                context: weak_context,
+            })
+        } else {
+            None
        }
-
-        Some(SuggestedContext::Thread {
-            name: active_thread.summary_or_default(),
-            thread: weak_active_thread,
-        })
    }

    fn handle_context_picker_event(
@@ -538,6 +556,10 @@ pub enum SuggestedContext {
        name: SharedString,
        thread: WeakEntity<Thread>,
    },
+    TextThread {
+        name: SharedString,
+        context: WeakEntity<AssistantContext>,
+    },
 }

 impl SuggestedContext {
@@ -545,6 +567,7 @@ impl SuggestedContext {
        match self {
            Self::File { name, .. } => name,
            Self::Thread { name, .. } => name,
+            Self::TextThread { name, .. } => name,
        }
    }

@@ -552,6 +575,7 @@ impl SuggestedContext {
        match self {
            Self::File { icon_path, .. } => icon_path.clone(),
            Self::Thread { .. } => None,
+            Self::TextThread { .. } => None,
        }
    }

@@ -559,6 +583,7 @@ impl SuggestedContext {
        match self {
            Self::File { .. } => ContextKind::File,
            Self::Thread { .. } => ContextKind::Thread,
+            Self::TextThread { .. } => ContextKind::TextThread,
        }
    }
 }
--- a/crates/agent/src/debug.rs
+++ b/crates/agent/src/debug.rs
@@ -0,0 +1,124 @@
+#![allow(unused, dead_code)]
+
+use gpui::Global;
+use language_model::RequestUsage;
+use std::ops::{Deref, DerefMut};
+use ui::prelude::*;
+use zed_llm_client::{Plan, UsageLimit};
+
+/// Debug only: Used for testing various account states
+///
+/// Use this by initializing it with
+/// `cx.set_global(DebugAccountState::default());` somewhere
+///
+/// Then call `cx.debug_account()` to get access
+#[derive(Clone, Debug)]
+pub struct DebugAccountState {
+    pub enabled: bool,
+    pub trial_expired: bool,
+    pub plan: Plan,
+    pub custom_prompt_usage: RequestUsage,
+    pub usage_based_billing_enabled: bool,
+    pub monthly_spending_cap: i32,
+    pub custom_edit_prediction_usage: UsageLimit,
+}
+
+impl DebugAccountState {
+    pub fn enabled(&self) -> bool {
+        self.enabled
+    }
+
+    pub fn set_enabled(&mut self, enabled: bool) -> &mut Self {
+        self.enabled = enabled;
+        self
+    }
+
+    pub fn set_trial_expired(&mut self, trial_expired: bool) -> &mut Self {
+        self.trial_expired = trial_expired;
+        self
+    }
+
+    pub fn set_plan(&mut self, plan: Plan) -> &mut Self {
+        self.plan = plan;
+        self
+    }
+
+    pub fn set_custom_prompt_usage(&mut self, custom_prompt_usage: RequestUsage) -> &mut Self {
+        self.custom_prompt_usage = custom_prompt_usage;
+        self
+    }
+
+    pub fn set_usage_based_billing_enabled(
+        &mut self,
+        usage_based_billing_enabled: bool,
+    ) -> &mut Self {
+        self.usage_based_billing_enabled = usage_based_billing_enabled;
+        self
+    }
+
+    pub fn set_monthly_spending_cap(&mut self, monthly_spending_cap: i32) -> &mut Self {
+        self.monthly_spending_cap = monthly_spending_cap;
+        self
+    }
+
+    pub fn set_custom_edit_prediction_usage(
+        &mut self,
+        custom_edit_prediction_usage: UsageLimit,
+    ) -> &mut Self {
+        self.custom_edit_prediction_usage = custom_edit_prediction_usage;
+        self
+    }
+}
+
+impl Default for DebugAccountState {
+    fn default() -> Self {
+        Self {
+            enabled: false,
+            trial_expired: false,
+            plan: Plan::Free,
+            custom_prompt_usage: RequestUsage {
+                limit: UsageLimit::Unlimited,
+                amount: 0,
+            },
+            usage_based_billing_enabled: false,
+            // $50.00
+            monthly_spending_cap: 5000,
+            custom_edit_prediction_usage: UsageLimit::Unlimited,
+        }
+    }
+}
+
+impl DebugAccountState {
+    pub fn get_global(cx: &App) -> &Self {
+        &cx.global::<GlobalDebugAccountState>().0
+    }
+}
+
+#[derive(Clone, Debug)]
+pub struct GlobalDebugAccountState(pub DebugAccountState);
+
+impl Global for GlobalDebugAccountState {}
+
+impl Deref for GlobalDebugAccountState {
+    type Target = DebugAccountState;
+
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+impl DerefMut for GlobalDebugAccountState {
+    fn deref_mut(&mut self) -> &mut Self::Target {
+        &mut self.0
+    }
+}
+
+pub trait DebugAccount {
+    fn debug_account(&self) -> &DebugAccountState;
+}
+
+impl DebugAccount for App {
+    fn debug_account(&self) -> &DebugAccountState {
+        &self.global::<GlobalDebugAccountState>().0
+    }
+}
--- a/crates/agent/src/history_store.rs
+++ b/crates/agent/src/history_store.rs
@@ -8,7 +8,7 @@ use gpui::{Entity, Task, prelude::*};
 use serde::{Deserialize, Serialize};
 use smol::future::FutureExt;
 use std::time::Duration;
-use ui::{App, SharedString};
+use ui::{App, SharedString, Window};
 use util::ResultExt as _;

 use crate::{
@@ -82,6 +82,7 @@ impl HistoryStore {
        thread_store: Entity<ThreadStore>,
        context_store: Entity<assistant_context_editor::ContextStore>,
        initial_recent_entries: impl IntoIterator<Item = RecentEntry>,
+        window: &mut Window,
        cx: &mut Context<Self>,
    ) -> Self {
        let subscriptions = vec![
@@ -89,55 +90,62 @@ impl HistoryStore {
            cx.observe(&context_store, |_, _, cx| cx.notify()),
        ];

-        cx.spawn({
-            let thread_store = thread_store.downgrade();
-            let context_store = context_store.downgrade();
-            async move |this, cx| {
-                let path = paths::data_dir().join(NAVIGATION_HISTORY_PATH);
-                let contents = cx
-                    .background_spawn(async move { std::fs::read_to_string(path) })
-                    .await
-                    .context("reading persisted agent panel navigation history")?;
-                let entries = serde_json::from_str::<Vec<SerializedRecentEntry>>(&contents)
-                    .context("deserializing persisted agent panel navigation history")?
-                    .into_iter()
-                    .take(MAX_RECENTLY_OPENED_ENTRIES)
-                    .map(|serialized| match serialized {
-                        SerializedRecentEntry::Thread(id) => thread_store
-                            .update(cx, |thread_store, cx| {
-                                let thread_id = ThreadId::from(id.as_str());
-                                thread_store
-                                    .open_thread(&thread_id, cx)
-                                    .map_ok(|thread| RecentEntry::Thread(thread_id, thread))
-                                    .boxed()
-                            })
-                            .unwrap_or_else(|_| async { Err(anyhow!("no thread store")) }.boxed()),
-                        SerializedRecentEntry::Context(id) => context_store
-                            .update(cx, |context_store, cx| {
-                                context_store
-                                    .open_local_context(Path::new(&id).into(), cx)
-                                    .map_ok(RecentEntry::Context)
-                                    .boxed()
-                            })
-                            .unwrap_or_else(|_| async { Err(anyhow!("no context store")) }.boxed()),
-                    });
-                let entries = join_all(entries)
-                    .await
-                    .into_iter()
-                    .filter_map(|result| result.log_err())
-                    .collect::<VecDeque<_>>();
+        window
+            .spawn(cx, {
+                let thread_store = thread_store.downgrade();
+                let context_store = context_store.downgrade();
+                let this = cx.weak_entity();
+                async move |cx| {
+                    let path = paths::data_dir().join(NAVIGATION_HISTORY_PATH);
+                    let contents = cx
+                        .background_spawn(async move { std::fs::read_to_string(path) })
+                        .await
+                        .ok()?;
+                    let entries = serde_json::from_str::<Vec<SerializedRecentEntry>>(&contents)
+                        .context("deserializing persisted agent panel navigation history")
+                        .log_err()?
+                        .into_iter()
+                        .take(MAX_RECENTLY_OPENED_ENTRIES)
+                        .map(|serialized| match serialized {
+                            SerializedRecentEntry::Thread(id) => thread_store
+                                .update_in(cx, |thread_store, window, cx| {
+                                    let thread_id = ThreadId::from(id.as_str());
+                                    thread_store
+                                        .open_thread(&thread_id, window, cx)
+                                        .map_ok(|thread| RecentEntry::Thread(thread_id, thread))
+                                        .boxed()
+                                })
+                                .unwrap_or_else(|_| {
+                                    async { Err(anyhow!("no thread store")) }.boxed()
+                                }),
+                            SerializedRecentEntry::Context(id) => context_store
+                                .update(cx, |context_store, cx| {
+                                    context_store
+                                        .open_local_context(Path::new(&id).into(), cx)
+                                        .map_ok(RecentEntry::Context)
+                                        .boxed()
+                                })
+                                .unwrap_or_else(|_| {
+                                    async { Err(anyhow!("no context store")) }.boxed()
+                                }),
+                        });
+                    let entries = join_all(entries)
+                        .await
+                        .into_iter()
+                        .filter_map(|result| result.log_err())
+                        .collect::<VecDeque<_>>();

-                this.update(cx, |this, _| {
-                    this.recently_opened_entries.extend(entries);
-                    this.recently_opened_entries
-                        .truncate(MAX_RECENTLY_OPENED_ENTRIES);
-                })
-                .ok();
+                    this.update(cx, |this, _| {
+                        this.recently_opened_entries.extend(entries);
+                        this.recently_opened_entries
+                            .truncate(MAX_RECENTLY_OPENED_ENTRIES);
+                    })
+                    .ok();

-                anyhow::Ok(())
-            }
-        })
-        .detach_and_log_err(cx);
+                    Some(())
+                }
+            })
+            .detach();

        Self {
            thread_store,
@@ -163,7 +171,10 @@ impl HistoryStore {
            history_entries.push(HistoryEntry::Thread(thread));
        }

-        for context in self.context_store.update(cx, |this, _cx| this.contexts()) {
+        for context in self
+            .context_store
+            .update(cx, |this, _cx| this.reverse_chronological_contexts())
+        {
            history_entries.push(HistoryEntry::Context(context));
        }

--- a/crates/agent/src/inline_assistant.rs
+++ b/crates/agent/src/inline_assistant.rs
@@ -17,7 +17,6 @@ use editor::{
        ToDisplayPoint,
    },
 };
-use feature_flags::{Assistant2FeatureFlag, FeatureFlagViewExt as _};
 use fs::Fs;
 use gpui::{
    App, Context, Entity, Focusable, Global, HighlightStyle, Subscription, Task, UpdateGlobal,
@@ -48,6 +47,7 @@ use crate::buffer_codegen::{BufferCodegen, CodegenAlternative, CodegenEvent};
 use crate::context_store::ContextStore;
 use crate::inline_prompt_editor::{CodegenStatus, InlineAssistId, PromptEditor, PromptEditorEvent};
 use crate::terminal_inline_assistant::TerminalInlineAssistant;
+use crate::thread_store::TextThreadStore;
 use crate::thread_store::ThreadStore;

 pub fn init(
@@ -65,15 +65,6 @@ pub fn init(
        InlineAssistant::update_global(cx, |inline_assistant, cx| {
            inline_assistant.register_workspace(&workspace, window, cx)
        });
-
-        cx.observe_flag::<Assistant2FeatureFlag, _>(window, {
-            |is_assistant2_enabled, _workspace, _window, cx| {
-                InlineAssistant::update_global(cx, |inline_assistant, _cx| {
-                    inline_assistant.is_assistant2_enabled = is_assistant2_enabled;
-                });
-            }
-        })
-        .detach();
    })
    .detach();
 }
@@ -96,7 +87,6 @@ pub struct InlineAssistant {
    prompt_builder: Arc<PromptBuilder>,
    telemetry: Arc<Telemetry>,
    fs: Arc<dyn Fs>,
-    is_assistant2_enabled: bool,
 }

 impl Global for InlineAssistant {}
@@ -118,7 +108,6 @@ impl InlineAssistant {
            prompt_builder,
            telemetry,
            fs,
-            is_assistant2_enabled: false,
        }
    }

@@ -187,21 +176,25 @@ impl InlineAssistant {
        window: &mut Window,
        cx: &mut App,
    ) {
-        let is_assistant2_enabled = self.is_assistant2_enabled;
+        let is_assistant2_enabled = true;

        if let Some(editor) = item.act_as::<Editor>(cx) {
            editor.update(cx, |editor, cx| {
                if is_assistant2_enabled {
-                    let thread_store = workspace
-                        .read(cx)
-                        .panel::<AssistantPanel>(cx)
+                    let panel = workspace.read(cx).panel::<AssistantPanel>(cx);
+                    let thread_store = panel
+                        .as_ref()
                        .map(|assistant_panel| assistant_panel.read(cx).thread_store().downgrade());
+                    let text_thread_store = panel.map(|assistant_panel| {
+                        assistant_panel.read(cx).text_thread_store().downgrade()
+                    });

                    editor.add_code_action_provider(
                        Rc::new(AssistantCodeActionProvider {
                            editor: cx.entity().downgrade(),
                            workspace: workspace.downgrade(),
                            thread_store,
+                            text_thread_store,
                        }),
                        window,
                        cx,
@@ -222,7 +215,7 @@ impl InlineAssistant {

    pub fn inline_assist(
        workspace: &mut Workspace,
-        _action: &zed_actions::assistant::InlineAssist,
+        action: &zed_actions::assistant::InlineAssist,
        window: &mut Window,
        cx: &mut Context<Workspace>,
    ) {
@@ -246,13 +239,15 @@ impl InlineAssistant {
                .map_or(false, |model| model.provider.is_authenticated(cx))
        };

-        let assistant_panel = workspace
-            .panel::<AssistantPanel>(cx)
-            .map(|assistant_panel| assistant_panel.read(cx));
-        let prompt_store = assistant_panel
-            .and_then(|assistant_panel| assistant_panel.prompt_store().as_ref().cloned());
-        let thread_store =
-            assistant_panel.map(|assistant_panel| assistant_panel.thread_store().downgrade());
+        let Some(assistant_panel) = workspace.panel::<AssistantPanel>(cx) else {
+            return;
+        };
+        let assistant_panel = assistant_panel.read(cx);
+
+        let prompt_store = assistant_panel.prompt_store().as_ref().cloned();
+        let thread_store = Some(assistant_panel.thread_store().downgrade());
+        let text_thread_store = Some(assistant_panel.text_thread_store().downgrade());
+        let context_store = assistant_panel.inline_assist_context_store().clone();

        let handle_assist =
            |window: &mut Window, cx: &mut Context<Workspace>| match inline_assist_target {
@@ -261,9 +256,12 @@ impl InlineAssistant {
                        assistant.assist(
                            &active_editor,
                            cx.entity().downgrade(),
+                            context_store,
                            workspace.project().downgrade(),
                            prompt_store,
                            thread_store,
+                            text_thread_store,
+                            action.prompt.clone(),
                            window,
                            cx,
                        )
@@ -277,6 +275,8 @@ impl InlineAssistant {
                            workspace.project().downgrade(),
                            prompt_store,
                            thread_store,
+                            text_thread_store,
+                            action.prompt.clone(),
                            window,
                            cx,
                        )
@@ -329,9 +329,12 @@ impl InlineAssistant {
        &mut self,
        editor: &Entity<Editor>,
        workspace: WeakEntity<Workspace>,
+        context_store: Entity<ContextStore>,
        project: WeakEntity<Project>,
        prompt_store: Option<Entity<PromptStore>>,
        thread_store: Option<WeakEntity<ThreadStore>>,
+        text_thread_store: Option<WeakEntity<TextThreadStore>>,
+        initial_prompt: Option<String>,
        window: &mut Window,
        cx: &mut App,
    ) {
@@ -430,15 +433,17 @@ impl InlineAssistant {
        }

        let assist_group_id = self.next_assist_group_id.post_inc();
-        let prompt_buffer =
-            cx.new(|cx| MultiBuffer::singleton(cx.new(|cx| Buffer::local(String::new(), cx)), cx));
+        let prompt_buffer = cx.new(|cx| {
+            MultiBuffer::singleton(
+                cx.new(|cx| Buffer::local(initial_prompt.unwrap_or_default(), cx)),
+                cx,
+            )
+        });

        let mut assists = Vec::new();
        let mut assist_to_focus = None;
        for range in codegen_ranges {
            let assist_id = self.next_assist_id.post_inc();
-            let context_store =
-                cx.new(|_cx| ContextStore::new(project.clone(), thread_store.clone()));
            let codegen = cx.new(|cx| {
                BufferCodegen::new(
                    editor.read(cx).buffer().clone(),
@@ -462,9 +467,10 @@ impl InlineAssistant {
                    prompt_buffer.clone(),
                    codegen.clone(),
                    self.fs.clone(),
-                    context_store,
+                    context_store.clone(),
                    workspace.clone(),
                    thread_store.clone(),
+                    text_thread_store.clone(),
                    window,
                    cx,
                )
@@ -537,6 +543,7 @@ impl InlineAssistant {
        workspace: Entity<Workspace>,
        prompt_store: Option<Entity<PromptStore>>,
        thread_store: Option<WeakEntity<ThreadStore>>,
+        text_thread_store: Option<WeakEntity<TextThreadStore>>,
        window: &mut Window,
        cx: &mut App,
    ) -> InlineAssistId {
@@ -582,6 +589,7 @@ impl InlineAssistant {
                context_store,
                workspace.downgrade(),
                thread_store,
+                text_thread_store,
                window,
                cx,
            )
@@ -1729,6 +1737,7 @@ struct AssistantCodeActionProvider {
    editor: WeakEntity<Editor>,
    workspace: WeakEntity<Workspace>,
    thread_store: Option<WeakEntity<ThreadStore>>,
+    text_thread_store: Option<WeakEntity<TextThreadStore>>,
 }

 const ASSISTANT_CODE_ACTION_PROVIDER_ID: &str = "assistant2";
@@ -1803,6 +1812,7 @@ impl CodeActionProvider for AssistantCodeActionProvider {
        let editor = self.editor.clone();
        let workspace = self.workspace.clone();
        let thread_store = self.thread_store.clone();
+        let text_thread_store = self.text_thread_store.clone();
        let prompt_store = PromptStore::global(cx);
        window.spawn(cx, async move |cx| {
            let workspace = workspace.upgrade().context("workspace was released")?;
@@ -1855,6 +1865,7 @@ impl CodeActionProvider for AssistantCodeActionProvider {
                    workspace,
                    prompt_store,
                    thread_store,
+                    text_thread_store,
                    window,
                    cx,
                );
--- a/crates/agent/src/inline_prompt_editor.rs
+++ b/crates/agent/src/inline_prompt_editor.rs
@@ -6,7 +6,7 @@ use crate::context_store::ContextStore;
 use crate::context_strip::{ContextStrip, ContextStripEvent, SuggestContextKind};
 use crate::message_editor::{extract_message_creases, insert_message_creases};
 use crate::terminal_codegen::TerminalCodegen;
-use crate::thread_store::ThreadStore;
+use crate::thread_store::{TextThreadStore, ThreadStore};
 use crate::{CycleNextInlineAssist, CyclePreviousInlineAssist};
 use crate::{RemoveAllContext, ToggleContextPicker};
 use client::ErrorExt;
@@ -846,6 +846,7 @@ impl PromptEditor<BufferCodegen> {
        context_store: Entity<ContextStore>,
        workspace: WeakEntity<Workspace>,
        thread_store: Option<WeakEntity<ThreadStore>>,
+        text_thread_store: Option<WeakEntity<TextThreadStore>>,
        window: &mut Window,
        cx: &mut Context<PromptEditor<BufferCodegen>>,
    ) -> PromptEditor<BufferCodegen> {
@@ -889,6 +890,7 @@ impl PromptEditor<BufferCodegen> {
                workspace.clone(),
                context_store.downgrade(),
                thread_store.clone(),
+                text_thread_store.clone(),
                prompt_editor_entity,
                codegen_buffer.as_ref().map(Entity::downgrade),
            ))));
@@ -902,6 +904,7 @@ impl PromptEditor<BufferCodegen> {
                context_store.clone(),
                workspace.clone(),
                thread_store.clone(),
+                text_thread_store.clone(),
                context_picker_menu_handle.clone(),
                SuggestContextKind::Thread,
                window,
@@ -1023,6 +1026,7 @@ impl PromptEditor<TerminalCodegen> {
        context_store: Entity<ContextStore>,
        workspace: WeakEntity<Workspace>,
        thread_store: Option<WeakEntity<ThreadStore>>,
+        text_thread_store: Option<WeakEntity<TextThreadStore>>,
        window: &mut Window,
        cx: &mut Context<Self>,
    ) -> Self {
@@ -1059,6 +1063,7 @@ impl PromptEditor<TerminalCodegen> {
                workspace.clone(),
                context_store.downgrade(),
                thread_store.clone(),
+                text_thread_store.clone(),
                prompt_editor_entity,
                None,
            ))));
@@ -1072,6 +1077,7 @@ impl PromptEditor<TerminalCodegen> {
                context_store.clone(),
                workspace.clone(),
                thread_store.clone(),
+                text_thread_store.clone(),
                context_picker_menu_handle.clone(),
                SuggestContextKind::Thread,
                window,
--- a/crates/agent/src/message_editor.rs
+++ b/crates/agent/src/message_editor.rs
@@ -4,15 +4,19 @@ use std::sync::Arc;
 use crate::assistant_model_selector::{AssistantModelSelector, ModelType};
 use crate::context::{AgentContextKey, ContextCreasesAddon, ContextLoadResult, load_context};
 use crate::tool_compatibility::{IncompatibleToolsState, IncompatibleToolsTooltip};
-use crate::ui::{AgentPreview, AnimatedLabel, MaxModeTooltip};
+use crate::ui::{
+    AnimatedLabel, MaxModeTooltip,
+    preview::{AgentPreview, UsageCallout},
+};
+use assistant_settings::{AssistantSettings, CompletionMode};
 use buffer_diff::BufferDiff;
+use client::UserStore;
 use collections::{HashMap, HashSet};
 use editor::actions::{MoveUp, Paste};
 use editor::{
    AnchorRangeExt, ContextMenuOptions, ContextMenuPlacement, Editor, EditorElement, EditorEvent,
    EditorMode, EditorStyle, MultiBuffer,
 };
-use feature_flags::{FeatureFlagAppExt, NewBillingFeatureFlag};
 use file_icons::FileIcons;
 use fs::Fs;
 use futures::future::Shared;
@@ -22,25 +26,29 @@ use gpui::{
    Task, TextStyle, WeakEntity, linear_color_stop, linear_gradient, point, pulsating_between,
 };
 use language::{Buffer, Language};
-use language_model::{ConfiguredModel, LanguageModelRequestMessage, MessageContent};
+use language_model::{
+    ConfiguredModel, LanguageModelRequestMessage, MessageContent, RequestUsage,
+    ZED_CLOUD_PROVIDER_ID,
+};
 use language_model_selector::ToggleModelSelector;
 use multi_buffer;
 use project::Project;
 use prompt_store::PromptStore;
+use proto::Plan;
 use settings::Settings;
 use std::time::Duration;
 use theme::ThemeSettings;
-use ui::{Disclosure, KeyBinding, PopoverMenuHandle, Tooltip, prelude::*};
-use util::ResultExt as _;
+use ui::{Disclosure, DocumentationSide, KeyBinding, PopoverMenuHandle, Tooltip, prelude::*};
+use util::{ResultExt as _, maybe};
+use workspace::dock::DockPosition;
 use workspace::{CollaboratorId, Workspace};
-use zed_llm_client::CompletionMode;

 use crate::context_picker::{ContextPicker, ContextPickerCompletionProvider, crease_for_mention};
 use crate::context_store::ContextStore;
 use crate::context_strip::{ContextStrip, ContextStripEvent, SuggestContextKind};
 use crate::profile_selector::ProfileSelector;
 use crate::thread::{MessageCrease, Thread, TokenUsageRatio};
-use crate::thread_store::ThreadStore;
+use crate::thread_store::{TextThreadStore, ThreadStore};
 use crate::{
    ActiveThread, AgentDiffPane, Chat, ExpandMessageEditor, Follow, NewThread, OpenAgentDiff,
    RemoveAllContext, ToggleContextPicker, ToggleProfileSelector, register_agent_preview,
@@ -53,6 +61,7 @@ pub struct MessageEditor {
    editor: Entity<Editor>,
    workspace: WeakEntity<Workspace>,
    project: Entity<Project>,
+    user_store: Entity<UserStore>,
    context_store: Entity<ContextStore>,
    prompt_store: Option<Entity<PromptStore>>,
    context_strip: Entity<ContextStrip>,
@@ -74,6 +83,7 @@ pub(crate) fn create_editor(
    workspace: WeakEntity<Workspace>,
    context_store: WeakEntity<ContextStore>,
    thread_store: WeakEntity<ThreadStore>,
+    text_thread_store: WeakEntity<TextThreadStore>,
    window: &mut Window,
    cx: &mut App,
 ) -> Entity<Editor> {
@@ -115,6 +125,7 @@ pub(crate) fn create_editor(
            workspace,
            context_store,
            Some(thread_store),
+            Some(text_thread_store),
            editor_entity,
            None,
        ))));
@@ -122,14 +133,25 @@ pub(crate) fn create_editor(
    editor
 }

+fn documentation_side(position: DockPosition) -> DocumentationSide {
+    match position {
+        DockPosition::Left => DocumentationSide::Right,
+        DockPosition::Bottom => DocumentationSide::Left,
+        DockPosition::Right => DocumentationSide::Left,
+    }
+}
+
 impl MessageEditor {
    pub fn new(
        fs: Arc<dyn Fs>,
        workspace: WeakEntity<Workspace>,
+        user_store: Entity<UserStore>,
        context_store: Entity<ContextStore>,
        prompt_store: Option<Entity<PromptStore>>,
        thread_store: WeakEntity<ThreadStore>,
+        text_thread_store: WeakEntity<TextThreadStore>,
        thread: Entity<Thread>,
+        dock_position: DockPosition,
        window: &mut Window,
        cx: &mut Context<Self>,
    ) -> Self {
@@ -140,6 +162,7 @@ impl MessageEditor {
            workspace.clone(),
            context_store.downgrade(),
            thread_store.clone(),
+            text_thread_store.clone(),
            window,
            cx,
        );
@@ -149,6 +172,7 @@ impl MessageEditor {
                context_store.clone(),
                workspace.clone(),
                Some(thread_store.clone()),
+                Some(text_thread_store.clone()),
                context_picker_menu_handle.clone(),
                SuggestContextKind::File,
                window,
@@ -188,6 +212,7 @@ impl MessageEditor {
        Self {
            editor: editor.clone(),
            project: thread.read(cx).project().clone(),
+            user_store,
            thread,
            incompatible_tools_state: incompatible_tools.clone(),
            workspace,
@@ -200,7 +225,15 @@ impl MessageEditor {
            model_selector,
            edits_expanded: false,
            editor_is_expanded: false,
-            profile_selector: cx.new(|cx| ProfileSelector::new(fs, thread_store, cx)),
+            profile_selector: cx.new(|cx| {
+                ProfileSelector::new(
+                    fs,
+                    thread_store,
+                    editor.focus_handle(cx),
+                    documentation_side(dock_position),
+                    cx,
+                )
+            }),
            last_estimated_token_count: None,
            update_token_count_task: None,
            _subscriptions: subscriptions,
@@ -281,6 +314,10 @@ impl MessageEditor {
        self.editor.read(cx).text(cx).trim().is_empty()
    }

+    pub fn is_editor_fully_empty(&self, cx: &App) -> bool {
+        self.editor.read(cx).is_empty(cx)
+    }
+
    fn send_to_model(&mut self, window: &mut Window, cx: &mut Context<Self>) {
        let Some(ConfiguredModel { model, provider }) = self
            .thread
@@ -426,10 +463,6 @@ impl MessageEditor {
    }

    fn render_max_mode_toggle(&self, cx: &mut Context<Self>) -> Option<AnyElement> {
-        if !cx.has_flag::<NewBillingFeatureFlag>() {
-            return None;
-        }
-
        let thread = self.thread.read(cx);
        let model = thread.configured_model();
        if !model?.model.supports_max_mode() {
@@ -437,12 +470,17 @@ impl MessageEditor {
        }

        let active_completion_mode = thread.completion_mode();
+        let max_mode_enabled = active_completion_mode == CompletionMode::Max;

        Some(
-            IconButton::new("max-mode", IconName::ZedMaxMode)
+            Button::new("max-mode", "Max Mode")
+                .label_size(LabelSize::Small)
+                .color(Color::Muted)
+                .icon(IconName::ZedMaxMode)
                .icon_size(IconSize::Small)
                .icon_color(Color::Muted)
-                .toggle_state(active_completion_mode == CompletionMode::Max)
+                .icon_position(IconPosition::Start)
+                .toggle_state(max_mode_enabled)
                .on_click(cx.listener(move |this, _event, _window, cx| {
                    this.thread.update(cx, |thread, _cx| {
                        thread.set_completion_mode(match active_completion_mode {
@@ -451,7 +489,10 @@ impl MessageEditor {
                        });
                    });
                }))
-                .tooltip(|_, cx| cx.new(MaxModeTooltip::new).into())
+                .tooltip(move |_window, cx| {
+                    cx.new(|_| MaxModeTooltip::new().selected(max_mode_enabled))
+                        .into()
+                })
                .into_any_element(),
        )
    }
@@ -463,6 +504,7 @@ impl MessageEditor {
                workspace.is_being_followed(CollaboratorId::Agent)
            })
            .unwrap_or(false);
+
        IconButton::new("follow-agent", IconName::Crosshair)
            .icon_size(IconSize::Small)
            .icon_color(Color::Muted)
@@ -494,13 +536,7 @@ impl MessageEditor {
            }))
    }

-    fn render_editor(
-        &self,
-        font_size: Rems,
-        line_height: Pixels,
-        window: &mut Window,
-        cx: &mut Context<Self>,
-    ) -> Div {
+    fn render_editor(&self, window: &mut Window, cx: &mut Context<Self>) -> Div {
        let thread = self.thread.read(cx);
        let model = thread.configured_model();

@@ -601,11 +637,15 @@ impl MessageEditor {
                        this.h(vh(0.8, window)).justify_between()
                    })
                    .child(
-                        div()
+                        v_flex()
                            .min_h_16()
                            .when(is_editor_expanded, |this| this.h_full())
                            .child({
                                let settings = ThemeSettings::get_global(cx);
+                                let font_size = TextSize::Small
+                                    .rems(cx)
+                                    .to_pixels(settings.agent_font_size(cx));
+                                let line_height = settings.buffer_line_height.value() * font_size;

                                let text_style = TextStyle {
                                    color: cx.theme().colors().text,
@@ -638,7 +678,7 @@ impl MessageEditor {
                                h_flex()
                                    .gap_1()
                                    .child(self.render_follow_toggle(cx))
-                                    .child(self.profile_selector.clone()),
+                                    .children(self.render_max_mode_toggle(cx)),
                            )
                            .child(
                                h_flex()
@@ -662,7 +702,7 @@ impl MessageEditor {
                                            }),
                                        )
                                    })
-                                    .children(self.render_max_mode_toggle(cx))
+                                    .child(self.profile_selector.clone())
                                    .child(self.model_selector.clone())
                                    .map({
                                        let focus_handle = focus_handle.clone();
@@ -1028,79 +1068,100 @@ impl MessageEditor {
            })
    }

+    fn render_usage_callout(&self, line_height: Pixels, cx: &mut Context<Self>) -> Option<Div> {
+        let is_using_zed_provider = self
+            .thread
+            .read(cx)
+            .configured_model()
+            .map_or(false, |model| {
+                model.provider.id().0 == ZED_CLOUD_PROVIDER_ID
+            });
+        if !is_using_zed_provider {
+            return None;
+        }
+
+        let user_store = self.user_store.read(cx);
+
+        let ubb_enable = user_store
+            .usage_based_billing_enabled()
+            .map_or(false, |enabled| enabled);
+
+        if ubb_enable {
+            return None;
+        }
+
+        let plan = user_store
+            .current_plan()
+            .map(|plan| match plan {
+                Plan::Free => zed_llm_client::Plan::Free,
+                Plan::ZedPro => zed_llm_client::Plan::ZedPro,
+                Plan::ZedProTrial => zed_llm_client::Plan::ZedProTrial,
+            })
+            .unwrap_or(zed_llm_client::Plan::Free);
+        let usage = self.thread.read(cx).last_usage().or_else(|| {
+            maybe!({
+                let amount = user_store.model_request_usage_amount()?;
+                let limit = user_store.model_request_usage_limit()?.variant?;
+
+                Some(RequestUsage {
+                    amount: amount as i32,
+                    limit: match limit {
+                        proto::usage_limit::Variant::Limited(limited) => {
+                            zed_llm_client::UsageLimit::Limited(limited.limit as i32)
+                        }
+                        proto::usage_limit::Variant::Unlimited(_) => {
+                            zed_llm_client::UsageLimit::Unlimited
+                        }
+                    },
+                })
+            })
+        })?;
+
+        Some(
+            div()
+                .child(UsageCallout::new(plan, usage))
+                .line_height(line_height),
+        )
+    }
+
    fn render_token_limit_callout(
        &self,
        line_height: Pixels,
        token_usage_ratio: TokenUsageRatio,
        cx: &mut Context<Self>,
-    ) -> Div {
-        let heading = if token_usage_ratio == TokenUsageRatio::Exceeded {
+    ) -> Option<Div> {
+        let title = if token_usage_ratio == TokenUsageRatio::Exceeded {
            "Thread reached the token limit"
        } else {
            "Thread reaching the token limit soon"
        };

-        h_flex()
-            .p_2()
-            .gap_2()
-            .flex_wrap()
-            .justify_between()
-            .bg(
-                if token_usage_ratio == TokenUsageRatio::Exceeded {
-                    cx.theme().status().error_background.opacity(0.1)
-                } else {
-                    cx.theme().status().warning_background.opacity(0.1)
-                })
-            .border_t_1()
-            .border_color(cx.theme().colors().border)
-            .child(
-                h_flex()
-                    .gap_2()
-                    .items_start()
-                    .child(
-                        h_flex()
-                            .h(line_height)
-                            .justify_center()
-                            .child(
-                                if token_usage_ratio == TokenUsageRatio::Exceeded {
-                                    Icon::new(IconName::X)
-                                        .color(Color::Error)
-                                        .size(IconSize::XSmall)
-                                } else {
-                                    Icon::new(IconName::Warning)
-                                        .color(Color::Warning)
-                                        .size(IconSize::XSmall)
-                                }
-                            ),
-                    )
-                    .child(
-                        v_flex()
-                            .mr_auto()
-                            .child(Label::new(heading).size(LabelSize::Small))
-                            .child(
-                                Label::new(
-                                    "Start a new thread from a summary to continue the conversation.",
-                                )
-                                .size(LabelSize::Small)
-                                .color(Color::Muted),
-                            ),
-                    ),
-            )
-            .child(
-                Button::new("new-thread", "Start New Thread")
-                    .on_click(cx.listener(|this, _, window, cx| {
-                        let from_thread_id = Some(this.thread.read(cx).id().clone());
+        let message = "Start a new thread from a summary to continue the conversation.";

-                        window.dispatch_action(Box::new(NewThread {
-                            from_thread_id
-                        }), cx);
-                    }))
-                    .icon(IconName::Plus)
-                    .icon_position(IconPosition::Start)
-                    .icon_size(IconSize::Small)
-                    .style(ButtonStyle::Tinted(ui::TintColor::Accent))
-                    .label_size(LabelSize::Small),
-            )
+        let icon = if token_usage_ratio == TokenUsageRatio::Exceeded {
+            Icon::new(IconName::X)
+                .color(Color::Error)
+                .size(IconSize::XSmall)
+        } else {
+            Icon::new(IconName::Warning)
+                .color(Color::Warning)
+                .size(IconSize::XSmall)
+        };
+
+        Some(
+            div()
+                .child(ui::Callout::multi_line(
+                    title,
+                    message,
+                    icon,
+                    "Start New Thread",
+                    Box::new(cx.listener(|this, _, window, cx| {
+                        let from_thread_id = Some(this.thread.read(cx).id().clone());
+                        window.dispatch_action(Box::new(NewThread { from_thread_id }), cx);
+                    })),
+                ))
+                .line_height(line_height),
+        )
    }

    pub fn last_estimated_token_count(&self) -> Option<usize> {
@@ -1199,7 +1260,7 @@ impl MessageEditor {
                        messages: vec![request_message],
                        tools: vec![],
                        stop: vec![],
-                        temperature: None,
+                        temperature: AssistantSettings::temperature_for_model(&model.model, cx),
                    };

                    Some(model.model.count_tokens(request, cx))
@@ -1222,6 +1283,12 @@ impl MessageEditor {
            .ok();
        }));
    }
+
+    pub fn set_dock_position(&mut self, position: DockPosition, cx: &mut Context<Self>) {
+        self.profile_selector.update(cx, |profile_selector, cx| {
+            profile_selector.set_documentation_side(documentation_side(position), cx)
+        });
+    }
 }

 pub fn extract_message_creases(
@@ -1296,17 +1363,24 @@ impl Render for MessageEditor {
        let action_log = self.thread.read(cx).action_log();
        let changed_buffers = action_log.read(cx).changed_buffers(cx);

-        let font_size = TextSize::Small.rems(cx);
-        let line_height = font_size.to_pixels(window.rem_size()) * 1.5;
+        let line_height = TextSize::Small.rems(cx).to_pixels(window.rem_size()) * 1.5;

        v_flex()
            .size_full()
            .when(changed_buffers.len() > 0, |parent| {
                parent.child(self.render_changed_buffers(&changed_buffers, window, cx))
            })
-            .child(self.render_editor(font_size, line_height, window, cx))
-            .when(token_usage_ratio != TokenUsageRatio::Normal, |parent| {
-                parent.child(self.render_token_limit_callout(line_height, token_usage_ratio, cx))
+            .child(self.render_editor(window, cx))
+            .children({
+                let usage_callout = self.render_usage_callout(line_height, cx);
+
+                if usage_callout.is_some() {
+                    usage_callout
+                } else if token_usage_ratio != TokenUsageRatio::Normal {
+                    self.render_token_limit_callout(line_height, token_usage_ratio, cx)
+                } else {
+                    None
+                }
            })
    }
 }
@@ -1352,30 +1426,43 @@ impl Component for MessageEditor {
    fn scope() -> ComponentScope {
        ComponentScope::Agent
    }
+
+    fn description() -> Option<&'static str> {
+        Some(
+            "The composer experience of the Agent Panel. This interface handles context, composing messages, switching profiles, models and more.",
+        )
+    }
 }

 impl AgentPreview for MessageEditor {
    fn agent_preview(
        workspace: WeakEntity<Workspace>,
        active_thread: Entity<ActiveThread>,
-        thread_store: WeakEntity<ThreadStore>,
        window: &mut Window,
        cx: &mut App,
    ) -> Option<AnyElement> {
-        if let Some(workspace_entity) = workspace.upgrade() {
-            let fs = workspace_entity.read(cx).app_state().fs.clone();
-            let weak_project = workspace_entity.read(cx).project().clone().downgrade();
+        if let Some(workspace) = workspace.upgrade() {
+            let fs = workspace.read(cx).app_state().fs.clone();
+            let user_store = workspace.read(cx).app_state().user_store.clone();
+            let project = workspace.read(cx).project().clone();
+            let weak_project = project.downgrade();
            let context_store = cx.new(|_cx| ContextStore::new(weak_project, None));
-            let thread = active_thread.read(cx).thread().clone();
+            let active_thread = active_thread.read(cx);
+            let thread = active_thread.thread().clone();
+            let thread_store = active_thread.thread_store().clone();
+            let text_thread_store = active_thread.text_thread_store().clone();

-            let example_message_editor = cx.new(|cx| {
+            let default_message_editor = cx.new(|cx| {
                MessageEditor::new(
                    fs,
-                    workspace,
+                    workspace.downgrade(),
+                    user_store,
                    context_store,
                    None,
-                    thread_store,
+                    thread_store.downgrade(),
+                    text_thread_store.downgrade(),
                    thread,
+                    DockPosition::Left,
                    window,
                    cx,
                )
@@ -1385,8 +1472,15 @@ impl AgentPreview for MessageEditor {
                v_flex()
                    .gap_4()
                    .children(vec![single_example(
-                        "Default",
-                        example_message_editor.clone().into_any_element(),
+                        "Default Message Editor",
+                        div()
+                            .w(px(540.))
+                            .pt_12()
+                            .bg(cx.theme().colors().panel_background)
+                            .border_1()
+                            .border_color(cx.theme().colors().border)
+                            .child(default_message_editor.clone())
+                            .into_any_element(),
                    )])
                    .into_any_element(),
            )
--- a/crates/agent/src/profile_selector.rs
+++ b/crates/agent/src/profile_selector.rs
@@ -4,28 +4,33 @@ use assistant_settings::{
    AgentProfile, AgentProfileId, AssistantSettings, GroupedAgentProfiles, builtin_profiles,
 };
 use fs::Fs;
-use gpui::{Action, Entity, Subscription, WeakEntity, prelude::*};
+use gpui::{Action, Entity, FocusHandle, Subscription, WeakEntity, prelude::*};
 use language_model::LanguageModelRegistry;
 use settings::{Settings as _, SettingsStore, update_settings_file};
 use ui::{
-    ButtonLike, ContextMenu, ContextMenuEntry, PopoverMenu, PopoverMenuHandle, Tooltip, prelude::*,
+    ContextMenu, ContextMenuEntry, DocumentationSide, PopoverMenu, PopoverMenuHandle, Tooltip,
+    prelude::*,
 };
 use util::ResultExt as _;

-use crate::{ManageProfiles, ThreadStore};
+use crate::{ManageProfiles, ThreadStore, ToggleProfileSelector};

 pub struct ProfileSelector {
    profiles: GroupedAgentProfiles,
    fs: Arc<dyn Fs>,
    thread_store: WeakEntity<ThreadStore>,
    menu_handle: PopoverMenuHandle<ContextMenu>,
+    focus_handle: FocusHandle,
    _subscriptions: Vec<Subscription>,
+    documentation_side: DocumentationSide,
 }

 impl ProfileSelector {
    pub fn new(
        fs: Arc<dyn Fs>,
        thread_store: WeakEntity<ThreadStore>,
+        focus_handle: FocusHandle,
+        documentation_side: DocumentationSide,
        cx: &mut Context<Self>,
    ) -> Self {
        let settings_subscription = cx.observe_global::<SettingsStore>(move |this, cx| {
@@ -37,10 +42,17 @@ impl ProfileSelector {
            fs,
            thread_store,
            menu_handle: PopoverMenuHandle::default(),
+            focus_handle,
            _subscriptions: vec![settings_subscription],
+            documentation_side,
        }
    }

+    pub fn set_documentation_side(&mut self, side: DocumentationSide, cx: &mut Context<Self>) {
+        self.documentation_side = side;
+        cx.notify();
+    }
+
    pub fn menu_handle(&self) -> PopoverMenuHandle<ContextMenu> {
        self.menu_handle.clone()
    }
@@ -92,7 +104,7 @@ impl ProfileSelector {
        let documentation = match profile.name.to_lowercase().as_str() {
            builtin_profiles::WRITE => Some("Get help to write anything."),
            builtin_profiles::ASK => Some("Chat about your codebase."),
-            builtin_profiles::MANUAL => Some("Chat about anything with no tools."),
+            builtin_profiles::MINIMAL => Some("Chat about anything with no tools."),
            _ => None,
        };

@@ -100,7 +112,9 @@ impl ProfileSelector {
            .toggleable(IconPosition::End, profile_id == settings.default_profile);

        let entry = if let Some(doc_text) = documentation {
-            entry.documentation_aside(move |_| Label::new(doc_text).into_any_element())
+            entry.documentation_aside(self.documentation_side, move |_| {
+                Label::new(doc_text).into_any_element()
+            })
        } else {
            entry
        };
@@ -142,40 +156,47 @@ impl Render for ProfileSelector {
            .default_model()
            .map_or(false, |default| default.model.supports_tools());

-        let this = cx.entity().clone();
+        if supports_tools {
+            let this = cx.entity().clone();
+            let focus_handle = self.focus_handle.clone();
+            let trigger_button = Button::new("profile-selector-model", selected_profile)
+                .label_size(LabelSize::Small)
+                .color(Color::Muted)
+                .icon(IconName::ChevronDown)
+                .icon_size(IconSize::XSmall)
+                .icon_position(IconPosition::End)
+                .icon_color(Color::Muted);

-        PopoverMenu::new("profile-selector")
-            .menu(move |window, cx| {
-                Some(this.update(cx, |this, cx| this.build_context_menu(window, cx)))
-            })
-            .trigger(if supports_tools {
-                ButtonLike::new("profile-selector-button").child(
-                    h_flex()
-                        .gap_1()
-                        .child(
-                            Label::new(selected_profile)
-                                .size(LabelSize::Small)
-                                .color(Color::Muted),
+            PopoverMenu::new("profile-selector")
+                .trigger_with_tooltip(trigger_button, {
+                    let focus_handle = focus_handle.clone();
+                    move |window, cx| {
+                        Tooltip::for_action_in(
+                            "Toggle Profile Menu",
+                            &ToggleProfileSelector,
+                            &focus_handle,
+                            window,
+                            cx,
                        )
-                        .child(
-                            Icon::new(IconName::ChevronDown)
-                                .size(IconSize::XSmall)
-                                .color(Color::Muted),
-                        ),
-                )
-            } else {
-                ButtonLike::new("tools-not-supported-button")
-                    .disabled(true)
-                    .child(
-                        h_flex().gap_1().child(
-                            Label::new("No Tools")
-                                .size(LabelSize::Small)
-                                .color(Color::Muted),
-                        ),
-                    )
-                    .tooltip(Tooltip::text("The current model does not support tools."))
-            })
-            .anchor(gpui::Corner::BottomRight)
-            .with_handle(self.menu_handle.clone())
+                    }
+                })
+                .anchor(if self.documentation_side == DocumentationSide::Left {
+                    gpui::Corner::BottomRight
+                } else {
+                    gpui::Corner::BottomLeft
+                })
+                .with_handle(self.menu_handle.clone())
+                .menu(move |window, cx| {
+                    Some(this.update(cx, |this, cx| this.build_context_menu(window, cx)))
+                })
+                .into_any_element()
+        } else {
+            Button::new("tools-not-supported-button", "Tools Unsupported")
+                .disabled(true)
+                .label_size(LabelSize::Small)
+                .color(Color::Muted)
+                .tooltip(Tooltip::text("This model does not support tools."))
+                .into_any_element()
+        }
    }
 }
--- a/crates/agent/src/terminal_inline_assistant.rs
+++ b/crates/agent/src/terminal_inline_assistant.rs
@@ -4,8 +4,9 @@ use crate::inline_prompt_editor::{
    CodegenStatus, PromptEditor, PromptEditorEvent, TerminalInlineAssistId,
 };
 use crate::terminal_codegen::{CLEAR_INPUT, CodegenEvent, TerminalCodegen};
-use crate::thread_store::ThreadStore;
+use crate::thread_store::{TextThreadStore, ThreadStore};
 use anyhow::{Context as _, Result};
+use assistant_settings::AssistantSettings;
 use client::telemetry::Telemetry;
 use collections::{HashMap, VecDeque};
 use editor::{MultiBuffer, actions::SelectAll};
@@ -71,13 +72,19 @@ impl TerminalInlineAssistant {
        project: WeakEntity<Project>,
        prompt_store: Option<Entity<PromptStore>>,
        thread_store: Option<WeakEntity<ThreadStore>>,
+        text_thread_store: Option<WeakEntity<TextThreadStore>>,
+        initial_prompt: Option<String>,
        window: &mut Window,
        cx: &mut App,
    ) {
        let terminal = terminal_view.read(cx).terminal().clone();
        let assist_id = self.next_assist_id.post_inc();
-        let prompt_buffer =
-            cx.new(|cx| MultiBuffer::singleton(cx.new(|cx| Buffer::local(String::new(), cx)), cx));
+        let prompt_buffer = cx.new(|cx| {
+            MultiBuffer::singleton(
+                cx.new(|cx| Buffer::local(initial_prompt.unwrap_or_default(), cx)),
+                cx,
+            )
+        });
        let context_store = cx.new(|_cx| ContextStore::new(project, thread_store.clone()));
        let codegen = cx.new(|_| TerminalCodegen::new(terminal, self.telemetry.clone()));

@@ -91,6 +98,7 @@ impl TerminalInlineAssistant {
                context_store.clone(),
                workspace.clone(),
                thread_store.clone(),
+                text_thread_store.clone(),
                window,
                cx,
            )
@@ -259,6 +267,12 @@ impl TerminalInlineAssistant {
            load_context(contexts, project, &assist.prompt_store, cx)
        })?;

+        let ConfiguredModel { model, .. } = LanguageModelRegistry::read_global(cx)
+            .inline_assistant_model()
+            .context("No inline assistant model")?;
+
+        let temperature = AssistantSettings::temperature_for_model(&model, cx);
+
        Ok(cx.background_spawn(async move {
            let mut request_message = LanguageModelRequestMessage {
                role: Role::User,
@@ -280,7 +294,7 @@ impl TerminalInlineAssistant {
                messages: vec![request_message],
                tools: Vec::new(),
                stop: Vec::new(),
-                temperature: None,
+                temperature,
            }
        }))
    }
--- a/crates/agent/src/thread.rs
+++ b/crates/agent/src/thread.rs
@@ -5,7 +5,7 @@ use std::sync::Arc;
 use std::time::Instant;

 use anyhow::{Result, anyhow};
-use assistant_settings::AssistantSettings;
+use assistant_settings::{AssistantSettings, CompletionMode};
 use assistant_tool::{ActionLog, AnyToolCard, Tool, ToolWorkingSet};
 use chrono::{DateTime, Utc};
 use collections::HashMap;
@@ -35,9 +35,10 @@ use schemars::JsonSchema;
 use serde::{Deserialize, Serialize};
 use settings::Settings;
 use thiserror::Error;
+use ui::Window;
 use util::{ResultExt as _, TryFutureExt as _, post_inc};
 use uuid::Uuid;
-use zed_llm_client::{CompletionMode, CompletionRequestStatus};
+use zed_llm_client::CompletionRequestStatus;

 use crate::ThreadStore;
 use crate::context::{AgentContext, AgentContextHandle, ContextLoadResult, LoadedContext};
@@ -267,7 +268,7 @@ impl DetailedSummaryState {
    }
 }

-#[derive(Default)]
+#[derive(Default, Debug)]
 pub struct TotalTokenUsage {
    pub total: usize,
    pub max: usize,
@@ -312,14 +313,6 @@ pub enum TokenUsageRatio {
    Exceeded,
 }

-fn default_completion_mode(cx: &App) -> CompletionMode {
-    if cx.is_staff() {
-        CompletionMode::Max
-    } else {
-        CompletionMode::Normal
-    }
-}
-
 #[derive(Debug, Clone, Copy)]
 pub enum QueueState {
    Sending,
@@ -336,7 +329,7 @@ pub struct Thread {
    detailed_summary_task: Task<Option<()>>,
    detailed_summary_tx: postage::watch::Sender<DetailedSummaryState>,
    detailed_summary_rx: postage::watch::Receiver<DetailedSummaryState>,
-    completion_mode: CompletionMode,
+    completion_mode: assistant_settings::CompletionMode,
    messages: Vec<Message>,
    next_message_id: MessageId,
    last_prompt_id: PromptId,
@@ -355,6 +348,7 @@ pub struct Thread {
    request_token_usage: Vec<TokenUsage>,
    cumulative_token_usage: TokenUsage,
    exceeded_window_error: Option<ExceededWindowError>,
+    last_usage: Option<RequestUsage>,
    tool_use_limit_reached: bool,
    feedback: Option<ThreadFeedback>,
    message_feedback: HashMap<MessageId, ThreadFeedback>,
@@ -394,7 +388,7 @@ impl Thread {
            detailed_summary_task: Task::ready(None),
            detailed_summary_tx,
            detailed_summary_rx,
-            completion_mode: default_completion_mode(cx),
+            completion_mode: AssistantSettings::get_global(cx).preferred_completion_mode,
            messages: Vec::new(),
            next_message_id: MessageId(0),
            last_prompt_id: PromptId::new(),
@@ -418,6 +412,7 @@ impl Thread {
            request_token_usage: Vec::new(),
            cumulative_token_usage: TokenUsage::default(),
            exceeded_window_error: None,
+            last_usage: None,
            tool_use_limit_reached: false,
            feedback: None,
            message_feedback: HashMap::default(),
@@ -436,6 +431,7 @@ impl Thread {
        tools: Entity<ToolWorkingSet>,
        prompt_builder: Arc<PromptBuilder>,
        project_context: SharedProjectContext,
+        window: &mut Window,
        cx: &mut Context<Self>,
    ) -> Self {
        let next_message_id = MessageId(
@@ -445,7 +441,13 @@ impl Thread {
                .map(|message| message.id.0 + 1)
                .unwrap_or(0),
        );
-        let tool_use = ToolUseState::from_serialized_messages(tools.clone(), &serialized.messages);
+        let tool_use = ToolUseState::from_serialized_messages(
+            tools.clone(),
+            &serialized.messages,
+            project.clone(),
+            window,
+            cx,
+        );
        let (detailed_summary_tx, detailed_summary_rx) =
            postage::watch::channel_with(serialized.detailed_summary_state);

@@ -462,6 +464,10 @@ impl Thread {
                .or_else(|| registry.default_model())
        });

+        let completion_mode = serialized
+            .completion_mode
+            .unwrap_or_else(|| AssistantSettings::get_global(cx).preferred_completion_mode);
+
        Self {
            id,
            updated_at: serialized.updated_at,
@@ -470,7 +476,7 @@ impl Thread {
            detailed_summary_task: Task::ready(None),
            detailed_summary_tx,
            detailed_summary_rx,
-            completion_mode: default_completion_mode(cx),
+            completion_mode,
            messages: serialized
                .messages
                .into_iter()
@@ -526,6 +532,7 @@ impl Thread {
            request_token_usage: serialized.request_token_usage,
            cumulative_token_usage: serialized.cumulative_token_usage,
            exceeded_window_error: None,
+            last_usage: None,
            tool_use_limit_reached: false,
            feedback: None,
            message_feedback: HashMap::default(),
@@ -817,6 +824,10 @@ impl Thread {
            .unwrap_or(false)
    }

+    pub fn last_usage(&self) -> Option<RequestUsage> {
+        self.last_usage
+    }
+
    pub fn tool_use_limit_reached(&self) -> bool {
        self.tool_use_limit_reached
    }
@@ -891,7 +902,7 @@ impl Thread {
        if !loaded_context.referenced_buffers.is_empty() {
            self.action_log.update(cx, |log, cx| {
                for buffer in loaded_context.referenced_buffers {
-                    log.track_buffer(buffer, cx);
+                    log.buffer_read(buffer, cx);
                }
            });
        }
@@ -991,7 +1002,7 @@ impl Thread {
        for message in &self.messages {
            text.push_str(match message.role {
                language_model::Role::User => "User:",
-                language_model::Role::Assistant => "Assistant:",
+                language_model::Role::Assistant => "Agent:",
                language_model::Role::System => "System:",
            });
            text.push('\n');
@@ -1061,6 +1072,7 @@ impl Thread {
                                tool_use_id: tool_result.tool_use_id.clone(),
                                is_error: tool_result.is_error,
                                content: tool_result.content.clone(),
+                                output: tool_result.output.clone(),
                            })
                            .collect(),
                        context: message.loaded_context.text.clone(),
@@ -1088,6 +1100,7 @@ impl Thread {
                        provider: model.provider.id().0.to_string(),
                        model: model.model.id().0.to_string(),
                    }),
+                completion_mode: Some(this.completion_mode),
            })
        })
    }
@@ -1141,7 +1154,7 @@ impl Thread {
            messages: vec![],
            tools: Vec::new(),
            stop: Vec::new(),
-            temperature: None,
+            temperature: AssistantSettings::temperature_for_model(&model, cx),
        };

        let available_tools = self.available_tools(cx, model.clone());
@@ -1239,15 +1252,20 @@ impl Thread {

        request.tools = available_tools;
        request.mode = if model.supports_max_mode() {
-            Some(self.completion_mode)
+            Some(self.completion_mode.into())
        } else {
-            Some(CompletionMode::Normal)
+            Some(CompletionMode::Normal.into())
        };

        request
    }

-    fn to_summarize_request(&self, added_user_message: String) -> LanguageModelRequest {
+    fn to_summarize_request(
+        &self,
+        model: &Arc<dyn LanguageModel>,
+        added_user_message: String,
+        cx: &App,
+    ) -> LanguageModelRequest {
        let mut request = LanguageModelRequest {
            thread_id: None,
            prompt_id: None,
@@ -1255,7 +1273,7 @@ impl Thread {
            messages: vec![],
            tools: Vec::new(),
            stop: Vec::new(),
-            temperature: None,
+            temperature: AssistantSettings::temperature_for_model(model, cx),
        };

        for message in &self.messages {
@@ -1528,14 +1546,16 @@ impl Thread {
                                            completion.queue_state =  QueueState::Started;
                                        }
                                        CompletionRequestStatus::Failed {
-                                            code, message
+                                            code, message, request_id
                                        } => {
-                                            return Err(anyhow!("completion request failed. code: {code}, message: {message}"));
+                                            return Err(anyhow!("completion request failed. request_id: {request_id}, code: {code}, message: {message}"));
                                        }
                                        CompletionRequestStatus::UsageUpdated {
                                            amount, limit
                                        } => {
-                                            cx.emit(ThreadEvent::UsageUpdated(RequestUsage { limit, amount: amount as i32 }));
+                                            let usage = RequestUsage { limit, amount: amount as i32 };
+
+                                            thread.last_usage = Some(usage);
                                        }
                                        CompletionRequestStatus::ToolUseLimitReached => {
                                            thread.tool_use_limit_reached = true;
@@ -1690,7 +1710,7 @@ impl Thread {
            If the conversation is about a specific subject, include it in the title. \
            Be descriptive. DO NOT speak in the first person.";

-        let request = self.to_summarize_request(added_user_message.into());
+        let request = self.to_summarize_request(&model.model, added_user_message.into(), cx);

        self.pending_summary = cx.spawn(async move |this, cx| {
            async move {
@@ -1704,11 +1724,11 @@ impl Thread {
                        LanguageModelCompletionEvent::StatusUpdate(
                            CompletionRequestStatus::UsageUpdated { amount, limit },
                        ) => {
-                            this.update(cx, |_, cx| {
-                                cx.emit(ThreadEvent::UsageUpdated(RequestUsage {
+                            this.update(cx, |thread, _cx| {
+                                thread.last_usage = Some(RequestUsage {
                                    limit,
                                    amount: amount as i32,
-                                }));
+                                });
                            })?;
                            continue;
                        }
@@ -1776,7 +1796,7 @@ impl Thread {
             4. Any action items or next steps if any\n\
             Format it in Markdown with headings and bullet points.";

-        let request = self.to_summarize_request(added_user_message.into());
+        let request = self.to_summarize_request(&model, added_user_message.into(), cx);

        *self.detailed_summary_tx.borrow_mut() = DetailedSummaryState::Generating {
            message_id: last_message_id,
@@ -1868,7 +1888,7 @@ impl Thread {
        model: Arc<dyn LanguageModel>,
    ) -> Vec<PendingToolUse> {
        self.auto_capture_telemetry(cx);
-        let request = self.to_completion_request(model, cx);
+        let request = self.to_completion_request(model.clone(), cx);
        let messages = Arc::new(request.messages);
        let pending_tool_uses = self
            .tool_use
@@ -1898,16 +1918,59 @@ impl Thread {
                        tool_use.input.clone(),
                        &messages,
                        tool,
+                        model.clone(),
                        window,
                        cx,
                    );
                }
+            } else {
+                self.handle_hallucinated_tool_use(
+                    tool_use.id.clone(),
+                    tool_use.name.clone(),
+                    window,
+                    cx,
+                );
            }
        }

        pending_tool_uses
    }

+    pub fn handle_hallucinated_tool_use(
+        &mut self,
+        tool_use_id: LanguageModelToolUseId,
+        hallucinated_tool_name: Arc<str>,
+        window: Option<AnyWindowHandle>,
+        cx: &mut Context<Thread>,
+    ) {
+        let available_tools = self.tools.read(cx).enabled_tools(cx);
+
+        let tool_list = available_tools
+            .iter()
+            .map(|tool| format!("- {}: {}", tool.name(), tool.description()))
+            .collect::<Vec<_>>()
+            .join("\n");
+
+        let error_message = format!(
+            "The tool '{}' doesn't exist or is not enabled. Available tools:\n{}",
+            hallucinated_tool_name, tool_list
+        );
+
+        let pending_tool_use = self.tool_use.insert_tool_output(
+            tool_use_id.clone(),
+            hallucinated_tool_name,
+            Err(anyhow!("Missing tool call: {error_message}")),
+            self.configured_model.as_ref(),
+        );
+
+        cx.emit(ThreadEvent::MissingToolUse {
+            tool_use_id: tool_use_id.clone(),
+            ui_text: error_message.into(),
+        });
+
+        self.tool_finished(tool_use_id, pending_tool_use, false, window, cx);
+    }
+
    pub fn receive_invalid_tool_json(
        &mut self,
        tool_use_id: LanguageModelToolUseId,
@@ -1950,10 +2013,19 @@ impl Thread {
        input: serde_json::Value,
        messages: &[LanguageModelRequestMessage],
        tool: Arc<dyn Tool>,
+        model: Arc<dyn LanguageModel>,
        window: Option<AnyWindowHandle>,
        cx: &mut Context<Thread>,
    ) {
-        let task = self.spawn_tool_use(tool_use_id.clone(), messages, input, tool, window, cx);
+        let task = self.spawn_tool_use(
+            tool_use_id.clone(),
+            messages,
+            input,
+            tool,
+            model,
+            window,
+            cx,
+        );
        self.tool_use
            .run_pending_tool(tool_use_id, ui_text.into(), task);
    }
@@ -1964,6 +2036,7 @@ impl Thread {
        messages: &[LanguageModelRequestMessage],
        input: serde_json::Value,
        tool: Arc<dyn Tool>,
+        model: Arc<dyn LanguageModel>,
        window: Option<AnyWindowHandle>,
        cx: &mut Context<Thread>,
    ) -> Task<()> {
@@ -1977,6 +2050,7 @@ impl Thread {
                messages,
                self.project.clone(),
                self.action_log.clone(),
+                model,
                window,
                cx,
            )
@@ -2309,7 +2383,7 @@ impl Thread {
                "## {role}\n",
                role = match message.role {
                    Role::User => "User",
-                    Role::Assistant => "Assistant",
+                    Role::Assistant => "Agent",
                    Role::System => "System",
                }
            )?;
@@ -2555,7 +2629,6 @@ pub enum ThreadError {
 #[derive(Debug, Clone)]
 pub enum ThreadEvent {
    ShowError(ThreadError),
-    UsageUpdated(RequestUsage),
    StreamedCompletion,
    ReceivedTextChunk,
    NewRequest,
@@ -2566,6 +2639,10 @@ pub enum ThreadEvent {
        ui_text: Arc<str>,
        input: serde_json::Value,
    },
+    MissingToolUse {
+        tool_use_id: LanguageModelToolUseId,
+        ui_text: Arc<str>,
+    },
    InvalidToolInput {
        tool_use_id: LanguageModelToolUseId,
        ui_text: Arc<str>,
@@ -2604,9 +2681,8 @@ struct PendingCompletion {
 mod tests {
    use super::*;
    use crate::{ThreadStore, context::load_context, context_store::ContextStore, thread_store};
-    use assistant_settings::AssistantSettings;
+    use assistant_settings::{AssistantSettings, LanguageModelParameters};
    use assistant_tool::ToolRegistry;
-    use context_server::ContextServerSettings;
    use editor::EditorSettings;
    use gpui::TestAppContext;
    use language_model::fake_provider::FakeLanguageModel;
@@ -3016,6 +3092,100 @@ fn main() {{
        );
    }

+    #[gpui::test]
+    async fn test_temperature_setting(cx: &mut TestAppContext) {
+        init_test_settings(cx);
+
+        let project = create_test_project(
+            cx,
+            json!({"code.rs": "fn main() {\n    println!(\"Hello, world!\");\n}"}),
+        )
+        .await;
+
+        let (_workspace, _thread_store, thread, _context_store, model) =
+            setup_test_environment(cx, project.clone()).await;
+
+        // Both model and provider
+        cx.update(|cx| {
+            AssistantSettings::override_global(
+                AssistantSettings {
+                    model_parameters: vec![LanguageModelParameters {
+                        provider: Some(model.provider_id().0.to_string().into()),
+                        model: Some(model.id().0.clone()),
+                        temperature: Some(0.66),
+                    }],
+                    ..AssistantSettings::get_global(cx).clone()
+                },
+                cx,
+            );
+        });
+
+        let request = thread.update(cx, |thread, cx| {
+            thread.to_completion_request(model.clone(), cx)
+        });
+        assert_eq!(request.temperature, Some(0.66));
+
+        // Only model
+        cx.update(|cx| {
+            AssistantSettings::override_global(
+                AssistantSettings {
+                    model_parameters: vec![LanguageModelParameters {
+                        provider: None,
+                        model: Some(model.id().0.clone()),
+                        temperature: Some(0.66),
+                    }],
+                    ..AssistantSettings::get_global(cx).clone()
+                },
+                cx,
+            );
+        });
+
+        let request = thread.update(cx, |thread, cx| {
+            thread.to_completion_request(model.clone(), cx)
+        });
+        assert_eq!(request.temperature, Some(0.66));
+
+        // Only provider
+        cx.update(|cx| {
+            AssistantSettings::override_global(
+                AssistantSettings {
+                    model_parameters: vec![LanguageModelParameters {
+                        provider: Some(model.provider_id().0.to_string().into()),
+                        model: None,
+                        temperature: Some(0.66),
+                    }],
+                    ..AssistantSettings::get_global(cx).clone()
+                },
+                cx,
+            );
+        });
+
+        let request = thread.update(cx, |thread, cx| {
+            thread.to_completion_request(model.clone(), cx)
+        });
+        assert_eq!(request.temperature, Some(0.66));
+
+        // Same model name, different provider
+        cx.update(|cx| {
+            AssistantSettings::override_global(
+                AssistantSettings {
+                    model_parameters: vec![LanguageModelParameters {
+                        provider: Some("anthropic".into()),
+                        model: Some(model.id().0.clone()),
+                        temperature: Some(0.66),
+                    }],
+                    ..AssistantSettings::get_global(cx).clone()
+                },
+                cx,
+            );
+        });
+
+        let request = thread.update(cx, |thread, cx| {
+            thread.to_completion_request(model.clone(), cx)
+        });
+        assert_eq!(request.temperature, None);
+    }
+
    fn init_test_settings(cx: &mut TestAppContext) {
        cx.update(|cx| {
            let settings_store = SettingsStore::test(cx);
@@ -3028,7 +3198,6 @@ fn main() {{
            workspace::init_settings(cx);
            language_model::init_settings(cx);
            ThemeSettings::register(cx);
-            ContextServerSettings::register(cx);
            EditorSettings::register(cx);
            ToolRegistry::default_global(cx);
        });
--- a/crates/agent/src/thread_history.rs
+++ b/crates/agent/src/thread_history.rs
@@ -1,11 +1,14 @@
+use std::fmt::Display;
+use std::ops::Range;
 use std::sync::Arc;

 use assistant_context_editor::SavedContextMetadata;
+use chrono::{Datelike as _, Local, NaiveDate, TimeDelta};
 use editor::{Editor, EditorEvent};
 use fuzzy::{StringMatch, StringMatchCandidate};
 use gpui::{
-    App, Entity, FocusHandle, Focusable, ScrollStrategy, Stateful, Task, UniformListScrollHandle,
-    WeakEntity, Window, uniform_list,
+    App, Empty, Entity, FocusHandle, Focusable, ScrollStrategy, Stateful, Task,
+    UniformListScrollHandle, WeakEntity, Window, uniform_list,
 };
 use time::{OffsetDateTime, UtcOffset};
 use ui::{
@@ -23,14 +26,45 @@ pub struct ThreadHistory {
    history_store: Entity<HistoryStore>,
    scroll_handle: UniformListScrollHandle,
    selected_index: usize,
-    search_query: SharedString,
    search_editor: Entity<Editor>,
    all_entries: Arc<Vec<HistoryEntry>>,
-    matches: Vec<StringMatch>,
-    _subscriptions: Vec<gpui::Subscription>,
-    _search_task: Option<Task<()>>,
+    // When the search is empty, we display date separators between history entries
+    // This vector contains an enum of either a separator or an actual entry
+    separated_items: Vec<HistoryListItem>,
+    _separated_items_task: Option<Task<()>>,
+    search_state: SearchState,
    scrollbar_visibility: bool,
    scrollbar_state: ScrollbarState,
+    _subscriptions: Vec<gpui::Subscription>,
+}
+
+enum SearchState {
+    Empty,
+    Searching {
+        query: SharedString,
+        _task: Task<()>,
+    },
+    Searched {
+        query: SharedString,
+        matches: Vec<StringMatch>,
+    },
+}
+
+enum HistoryListItem {
+    BucketSeparator(TimeBucket),
+    Entry {
+        index: usize,
+        format: EntryTimeFormat,
+    },
+}
+
+impl HistoryListItem {
+    fn entry_index(&self) -> Option<usize> {
+        match self {
+            HistoryListItem::BucketSeparator(_) => None,
+            HistoryListItem::Entry { index, .. } => Some(*index),
+        }
+    }
 }

 impl ThreadHistory {
@@ -50,15 +84,10 @@ impl ThreadHistory {
            cx.subscribe(&search_editor, |this, search_editor, event, cx| {
                if let EditorEvent::BufferEdited = event {
                    let query = search_editor.read(cx).text(cx);
-                    this.search_query = query.into();
-                    this.update_search(cx);
+                    this.search(query.into(), cx);
                }
            });

-        let entries: Arc<Vec<_>> = history_store
-            .update(cx, |store, cx| store.entries(cx))
-            .into();
-
        let history_store_subscription = cx.observe(&history_store, |this, _, cx| {
            this.update_all_entries(cx);
        });
@@ -66,20 +95,22 @@ impl ThreadHistory {
        let scroll_handle = UniformListScrollHandle::default();
        let scrollbar_state = ScrollbarState::new(scroll_handle.clone());

-        Self {
+        let mut this = Self {
            assistant_panel,
            history_store,
            scroll_handle,
            selected_index: 0,
-            search_query: SharedString::new_static(""),
-            all_entries: entries,
-            matches: Vec::new(),
+            search_state: SearchState::Empty,
+            all_entries: Default::default(),
+            separated_items: Default::default(),
            search_editor,
-            _subscriptions: vec![search_editor_subscription, history_store_subscription],
-            _search_task: None,
            scrollbar_visibility: true,
            scrollbar_state,
-        }
+            _subscriptions: vec![search_editor_subscription, history_store_subscription],
+            _separated_items_task: None,
+        };
+        this.update_all_entries(cx);
+        this
    }

    fn update_all_entries(&mut self, cx: &mut Context<Self>) {
@@ -87,88 +118,167 @@ impl ThreadHistory {
            .history_store
            .update(cx, |store, cx| store.entries(cx))
            .into();
-        self.matches.clear();
-        self.update_search(cx);
-    }

-    fn update_search(&mut self, cx: &mut Context<Self>) {
-        self._search_task.take();
+        self.set_selected_index(0, cx);
+        self.update_separated_items(cx);

-        if self.has_search_query() {
-            self.perform_search(cx);
-        } else {
-            self.matches.clear();
-            self.set_selected_index(0, cx);
-            cx.notify();
+        match &self.search_state {
+            SearchState::Empty => {}
+            SearchState::Searching { query, .. } | SearchState::Searched { query, .. } => {
+                self.search(query.clone(), cx);
+            }
        }
+        cx.notify();
    }

-    fn perform_search(&mut self, cx: &mut Context<Self>) {
-        let query = self.search_query.clone();
+    fn update_separated_items(&mut self, cx: &mut Context<Self>) {
+        self._separated_items_task.take();
+
+        let mut separated_items = std::mem::take(&mut self.separated_items);
+        separated_items.clear();
        let all_entries = self.all_entries.clone();

+        let bg_task = cx.background_spawn(async move {
+            let mut bucket = None;
+            let today = Local::now().naive_local().date();
+
+            for (index, entry) in all_entries.iter().enumerate() {
+                let entry_date = entry
+                    .updated_at()
+                    .with_timezone(&Local)
+                    .naive_local()
+                    .date();
+                let entry_bucket = TimeBucket::from_dates(today, entry_date);
+
+                if Some(entry_bucket) != bucket {
+                    bucket = Some(entry_bucket);
+                    separated_items.push(HistoryListItem::BucketSeparator(entry_bucket));
+                }
+                separated_items.push(HistoryListItem::Entry {
+                    index,
+                    format: entry_bucket.into(),
+                });
+            }
+            separated_items
+        });
+
        let task = cx.spawn(async move |this, cx| {
-            let executor = cx.background_executor().clone();
-
-            let matches = cx
-                .background_spawn(async move {
-                    let mut candidates = Vec::with_capacity(all_entries.len());
-
-                    for (idx, entry) in all_entries.iter().enumerate() {
-                        match entry {
-                            HistoryEntry::Thread(thread) => {
-                                candidates.push(StringMatchCandidate::new(idx, &thread.summary));
-                            }
-                            HistoryEntry::Context(context) => {
-                                candidates.push(StringMatchCandidate::new(idx, &context.title));
-                            }
-                        }
-                    }
-
-                    const MAX_MATCHES: usize = 100;
-
-                    fuzzy::match_strings(
-                        &candidates,
-                        &query,
-                        false,
-                        MAX_MATCHES,
-                        &Default::default(),
-                        executor,
-                    )
-                    .await
-                })
-                .await;
-
+            let separated_items = bg_task.await;
            this.update(cx, |this, cx| {
-                this.matches = matches;
-                this.set_selected_index(0, cx);
+                this.separated_items = separated_items;
                cx.notify();
            })
            .log_err();
        });
-
-        self._search_task = Some(task);
+        self._separated_items_task = Some(task);
    }

-    fn has_search_query(&self) -> bool {
-        !self.search_query.is_empty()
+    fn search(&mut self, query: SharedString, cx: &mut Context<Self>) {
+        if query.is_empty() {
+            self.search_state = SearchState::Empty;
+            cx.notify();
+            return;
+        }
+
+        let all_entries = self.all_entries.clone();
+
+        let fuzzy_search_task = cx.background_spawn({
+            let query = query.clone();
+            let executor = cx.background_executor().clone();
+            async move {
+                let mut candidates = Vec::with_capacity(all_entries.len());
+
+                for (idx, entry) in all_entries.iter().enumerate() {
+                    match entry {
+                        HistoryEntry::Thread(thread) => {
+                            candidates.push(StringMatchCandidate::new(idx, &thread.summary));
+                        }
+                        HistoryEntry::Context(context) => {
+                            candidates.push(StringMatchCandidate::new(idx, &context.title));
+                        }
+                    }
+                }
+
+                const MAX_MATCHES: usize = 100;
+
+                fuzzy::match_strings(
+                    &candidates,
+                    &query,
+                    false,
+                    MAX_MATCHES,
+                    &Default::default(),
+                    executor,
+                )
+                .await
+            }
+        });
+
+        let task = cx.spawn({
+            let query = query.clone();
+            async move |this, cx| {
+                let matches = fuzzy_search_task.await;
+
+                this.update(cx, |this, cx| {
+                    let SearchState::Searching {
+                        query: current_query,
+                        _task,
+                    } = &this.search_state
+                    else {
+                        return;
+                    };
+
+                    if &query == current_query {
+                        this.search_state = SearchState::Searched {
+                            query: query.clone(),
+                            matches,
+                        };
+
+                        this.set_selected_index(0, cx);
+                        cx.notify();
+                    };
+                })
+                .log_err();
+            }
+        });
+
+        self.search_state = SearchState::Searching {
+            query: query.clone(),
+            _task: task,
+        };
+        cx.notify();
    }

    fn matched_count(&self) -> usize {
-        if self.has_search_query() {
-            self.matches.len()
-        } else {
-            self.all_entries.len()
+        match &self.search_state {
+            SearchState::Empty => self.all_entries.len(),
+            SearchState::Searching { .. } => 0,
+            SearchState::Searched { matches, .. } => matches.len(),
+        }
+    }
+
+    fn list_item_count(&self) -> usize {
+        match &self.search_state {
+            SearchState::Empty => self.separated_items.len(),
+            SearchState::Searching { .. } => 0,
+            SearchState::Searched { matches, .. } => matches.len(),
+        }
+    }
+
+    fn search_produced_no_matches(&self) -> bool {
+        match &self.search_state {
+            SearchState::Empty => false,
+            SearchState::Searching { .. } => false,
+            SearchState::Searched { matches, .. } => matches.is_empty(),
        }
    }

    fn get_match(&self, ix: usize) -> Option<&HistoryEntry> {
-        if self.has_search_query() {
-            self.matches
+        match &self.search_state {
+            SearchState::Empty => self.all_entries.get(ix),
+            SearchState::Searching { .. } => None,
+            SearchState::Searched { matches, .. } => matches
                .get(ix)
-                .and_then(|m| self.all_entries.get(m.candidate_id))
-        } else {
-            self.all_entries.get(ix)
+                .and_then(|m| self.all_entries.get(m.candidate_id)),
        }
    }

@@ -311,6 +421,107 @@ impl ThreadHistory {
            cx.notify();
        }
    }
+
+    fn list_items(
+        &mut self,
+        range: Range<usize>,
+        _window: &mut Window,
+        cx: &mut Context<Self>,
+    ) -> Vec<AnyElement> {
+        let range_start = range.start;
+
+        match &self.search_state {
+            SearchState::Empty => self
+                .separated_items
+                .get(range)
+                .iter()
+                .flat_map(|items| {
+                    items
+                        .iter()
+                        .map(|item| self.render_list_item(item.entry_index(), item, vec![], cx))
+                })
+                .collect(),
+            SearchState::Searched { matches, .. } => matches[range]
+                .iter()
+                .enumerate()
+                .map(|(ix, m)| {
+                    self.render_list_item(
+                        Some(range_start + ix),
+                        &HistoryListItem::Entry {
+                            index: m.candidate_id,
+                            format: EntryTimeFormat::DateAndTime,
+                        },
+                        m.positions.clone(),
+                        cx,
+                    )
+                })
+                .collect(),
+            SearchState::Searching { .. } => {
+                vec![]
+            }
+        }
+    }
+
+    fn render_list_item(
+        &self,
+        list_entry_ix: Option<usize>,
+        item: &HistoryListItem,
+        highlight_positions: Vec<usize>,
+        cx: &App,
+    ) -> AnyElement {
+        match item {
+            HistoryListItem::Entry { index, format } => match self.all_entries.get(*index) {
+                Some(entry) => h_flex()
+                    .w_full()
+                    .pb_1()
+                    .child(self.render_history_entry(
+                        entry,
+                        list_entry_ix == Some(self.selected_index),
+                        highlight_positions,
+                        *format,
+                    ))
+                    .into_any(),
+                None => Empty.into_any_element(),
+            },
+            HistoryListItem::BucketSeparator(bucket) => div()
+                .px(DynamicSpacing::Base06.rems(cx))
+                .pt_2()
+                .pb_1()
+                .child(
+                    Label::new(bucket.to_string())
+                        .size(LabelSize::XSmall)
+                        .color(Color::Muted),
+                )
+                .into_any_element(),
+        }
+    }
+
+    fn render_history_entry(
+        &self,
+        entry: &HistoryEntry,
+        is_active: bool,
+        highlight_positions: Vec<usize>,
+        format: EntryTimeFormat,
+    ) -> AnyElement {
+        match entry {
+            HistoryEntry::Thread(thread) => PastThread::new(
+                thread.clone(),
+                self.assistant_panel.clone(),
+                is_active,
+                highlight_positions,
+                format,
+            )
+            .into_any_element(),
+            HistoryEntry::Context(context) => PastContext::new(
+                context.clone(),
+                self.assistant_panel.clone(),
+                is_active,
+                highlight_positions,
+                format,
+            )
+            .into_any_element(),
+        }
+    }
 }

 impl Focusable for ThreadHistory {
@@ -321,8 +532,6 @@ impl Focusable for ThreadHistory {

 impl Render for ThreadHistory {
    fn render(&mut self, _window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
-        let selected_index = self.selected_index;
-
        v_flex()
            .key_context("ThreadHistory")
            .size_full()
@@ -366,7 +575,7 @@ impl Render for ThreadHistory {
                                    .size(LabelSize::Small),
                            ),
                        )
-                } else if self.has_search_query() && self.matches.is_empty() {
+                } else if self.search_produced_no_matches() {
                    view.justify_center().child(
                        h_flex().w_full().justify_center().child(
                            Label::new("No threads match your search.").size(LabelSize::Small),
@@ -378,57 +587,8 @@ impl Render for ThreadHistory {
                            uniform_list(
                                cx.entity().clone(),
                                "thread-history",
-                                self.matched_count(),
-                                move |history, range, _window, _cx| {
-                                    let range_start = range.start;
-                                    let assistant_panel = history.assistant_panel.clone();
-
-                                    let render_item = |index: usize,
-                                                       entry: &HistoryEntry,
-                                                       highlight_positions: Vec<usize>|
-                                     -> Div {
-                                        h_flex().w_full().pb_1().child(match entry {
-                                            HistoryEntry::Thread(thread) => PastThread::new(
-                                                thread.clone(),
-                                                assistant_panel.clone(),
-                                                selected_index == index + range_start,
-                                                highlight_positions,
-                                            )
-                                            .into_any_element(),
-                                            HistoryEntry::Context(context) => PastContext::new(
-                                                context.clone(),
-                                                assistant_panel.clone(),
-                                                selected_index == index + range_start,
-                                                highlight_positions,
-                                            )
-                                            .into_any_element(),
-                                        })
-                                    };
-
-                                    if history.has_search_query() {
-                                        history.matches[range]
-                                            .iter()
-                                            .enumerate()
-                                            .filter_map(|(index, m)| {
-                                                history.all_entries.get(m.candidate_id).map(
-                                                    |entry| {
-                                                        render_item(
-                                                            index,
-                                                            entry,
-                                                            m.positions.clone(),
-                                                        )
-                                                    },
-                                                )
-                                            })
-                                            .collect()
-                                    } else {
-                                        history.all_entries[range]
-                                            .iter()
-                                            .enumerate()
-                                            .map(|(index, entry)| render_item(index, entry, vec![]))
-                                            .collect()
-                                    }
-                                },
+                                self.list_item_count(),
+                                Self::list_items,
                            )
                            .p_1()
                            .track_scroll(self.scroll_handle.clone())
@@ -448,6 +608,7 @@ pub struct PastThread {
    assistant_panel: WeakEntity<AssistantPanel>,
    selected: bool,
    highlight_positions: Vec<usize>,
+    timestamp_format: EntryTimeFormat,
 }

 impl PastThread {
@@ -456,12 +617,14 @@ impl PastThread {
        assistant_panel: WeakEntity<AssistantPanel>,
        selected: bool,
        highlight_positions: Vec<usize>,
+        timestamp_format: EntryTimeFormat,
    ) -> Self {
        Self {
            thread,
            assistant_panel,
            selected,
            highlight_positions,
+            timestamp_format,
        }
    }
 }
@@ -470,13 +633,10 @@ impl RenderOnce for PastThread {
    fn render(self, _window: &mut Window, cx: &mut App) -> impl IntoElement {
        let summary = self.thread.summary;

-        let thread_timestamp = time_format::format_localized_timestamp(
-            OffsetDateTime::from_unix_timestamp(self.thread.updated_at.timestamp()).unwrap(),
-            OffsetDateTime::now_utc(),
-            self.assistant_panel
-                .update(cx, |this, _cx| this.local_timezone())
-                .unwrap_or(UtcOffset::UTC),
-            time_format::TimestampFormat::EnhancedAbsolute,
+        let thread_timestamp = self.timestamp_format.format_timestamp(
+            &self.assistant_panel,
+            self.thread.updated_at.timestamp(),
+            cx,
        );

        ListItem::new(SharedString::from(self.thread.id.to_string()))
@@ -540,6 +700,7 @@ pub struct PastContext {
    assistant_panel: WeakEntity<AssistantPanel>,
    selected: bool,
    highlight_positions: Vec<usize>,
+    timestamp_format: EntryTimeFormat,
 }

 impl PastContext {
@@ -548,12 +709,14 @@ impl PastContext {
        assistant_panel: WeakEntity<AssistantPanel>,
        selected: bool,
        highlight_positions: Vec<usize>,
+        timestamp_format: EntryTimeFormat,
    ) -> Self {
        Self {
            context,
            assistant_panel,
            selected,
            highlight_positions,
+            timestamp_format,
        }
    }
 }
@@ -561,13 +724,10 @@ impl PastContext {
 impl RenderOnce for PastContext {
    fn render(self, _window: &mut Window, cx: &mut App) -> impl IntoElement {
        let summary = self.context.title;
-        let context_timestamp = time_format::format_localized_timestamp(
-            OffsetDateTime::from_unix_timestamp(self.context.mtime.timestamp()).unwrap(),
-            OffsetDateTime::now_utc(),
-            self.assistant_panel
-                .update(cx, |this, _cx| this.local_timezone())
-                .unwrap_or(UtcOffset::UTC),
-            time_format::TimestampFormat::EnhancedAbsolute,
+        let context_timestamp = self.timestamp_format.format_timestamp(
+            &self.assistant_panel,
+            self.context.mtime.timestamp(),
+            cx,
        );

        ListItem::new(SharedString::from(
@@ -627,3 +787,137 @@ impl RenderOnce for PastContext {
        })
    }
 }
+
+#[derive(Clone, Copy)]
+pub enum EntryTimeFormat {
+    DateAndTime,
+    TimeOnly,
+}
+
+impl EntryTimeFormat {
+    fn format_timestamp(
+        &self,
+        assistant_panel: &WeakEntity<AssistantPanel>,
+        timestamp: i64,
+        cx: &App,
+    ) -> String {
+        let timestamp = OffsetDateTime::from_unix_timestamp(timestamp).unwrap();
+        let timezone = assistant_panel
+            .read_with(cx, |this, _cx| this.local_timezone())
+            .unwrap_or(UtcOffset::UTC);
+
+        match &self {
+            EntryTimeFormat::DateAndTime => time_format::format_localized_timestamp(
+                timestamp,
+                OffsetDateTime::now_utc(),
+                timezone,
+                time_format::TimestampFormat::EnhancedAbsolute,
+            ),
+            EntryTimeFormat::TimeOnly => time_format::format_time(timestamp),
+        }
+    }
+}
+
+impl From<TimeBucket> for EntryTimeFormat {
+    fn from(bucket: TimeBucket) -> Self {
+        match bucket {
+            TimeBucket::Today => EntryTimeFormat::TimeOnly,
+            TimeBucket::Yesterday => EntryTimeFormat::TimeOnly,
+            TimeBucket::ThisWeek => EntryTimeFormat::DateAndTime,
+            TimeBucket::PastWeek => EntryTimeFormat::DateAndTime,
+            TimeBucket::All => EntryTimeFormat::DateAndTime,
+        }
+    }
+}
+
+#[derive(PartialEq, Eq, Clone, Copy, Debug)]
+enum TimeBucket {
+    Today,
+    Yesterday,
+    ThisWeek,
+    PastWeek,
+    All,
+}
+
+impl TimeBucket {
+    fn from_dates(reference: NaiveDate, date: NaiveDate) -> Self {
+        if date == reference {
+            return TimeBucket::Today;
+        }
+
+        if date == reference - TimeDelta::days(1) {
+            return TimeBucket::Yesterday;
+        }
+
+        let week = date.iso_week();
+
+        if reference.iso_week() == week {
+            return TimeBucket::ThisWeek;
+        }
+
+        let last_week = (reference - TimeDelta::days(7)).iso_week();
+
+        if week == last_week {
+            return TimeBucket::PastWeek;
+        }
+
+        TimeBucket::All
+    }
+}
+
+impl Display for TimeBucket {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            TimeBucket::Today => write!(f, "Today"),
+            TimeBucket::Yesterday => write!(f, "Yesterday"),
+            TimeBucket::ThisWeek => write!(f, "This Week"),
+            TimeBucket::PastWeek => write!(f, "Past Week"),
+            TimeBucket::All => write!(f, "All"),
+        }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use chrono::NaiveDate;
+
+    #[test]
+    fn test_time_bucket_from_dates() {
+        let today = NaiveDate::from_ymd_opt(2023, 1, 15).unwrap();
+
+        let date = today;
+        assert_eq!(TimeBucket::from_dates(today, date), TimeBucket::Today);
+
+        let date = NaiveDate::from_ymd_opt(2023, 1, 14).unwrap();
+        assert_eq!(TimeBucket::from_dates(today, date), TimeBucket::Yesterday);
+
+        let date = NaiveDate::from_ymd_opt(2023, 1, 13).unwrap();
+        assert_eq!(TimeBucket::from_dates(today, date), TimeBucket::ThisWeek);
+
+        let date = NaiveDate::from_ymd_opt(2023, 1, 11).unwrap();
+        assert_eq!(TimeBucket::from_dates(today, date), TimeBucket::ThisWeek);
+
+        let date = NaiveDate::from_ymd_opt(2023, 1, 8).unwrap();
+        assert_eq!(TimeBucket::from_dates(today, date), TimeBucket::PastWeek);
+
+        let date = NaiveDate::from_ymd_opt(2023, 1, 5).unwrap();
+        assert_eq!(TimeBucket::from_dates(today, date), TimeBucket::PastWeek);
+
+        // All: not in this week or last week
+        let date = NaiveDate::from_ymd_opt(2023, 1, 1).unwrap();
+        assert_eq!(TimeBucket::from_dates(today, date), TimeBucket::All);
+
+        // Test year boundary cases
+        let new_year = NaiveDate::from_ymd_opt(2023, 1, 1).unwrap();
+
+        let date = NaiveDate::from_ymd_opt(2022, 12, 31).unwrap();
+        assert_eq!(
+            TimeBucket::from_dates(new_year, date),
+            TimeBucket::Yesterday
+        );
+
+        let date = NaiveDate::from_ymd_opt(2022, 12, 28).unwrap();
+        assert_eq!(TimeBucket::from_dates(new_year, date), TimeBucket::ThisWeek);
+    }
+}
--- a/crates/agent/src/thread_store.rs
+++ b/crates/agent/src/thread_store.rs
@@ -5,12 +5,11 @@ use std::rc::Rc;
 use std::sync::Arc;

 use anyhow::{Context as _, Result, anyhow};
-use assistant_settings::{AgentProfile, AgentProfileId, AssistantSettings};
+use assistant_settings::{AgentProfile, AgentProfileId, AssistantSettings, CompletionMode};
 use assistant_tool::{ToolId, ToolSource, ToolWorkingSet};
 use chrono::{DateTime, Utc};
 use collections::HashMap;
-use context_server::manager::{ContextServerManager, ContextServerStatus};
-use context_server::{ContextServerDescriptorRegistry, ContextServerTool};
+use context_server::ContextServerId;
 use futures::channel::{mpsc, oneshot};
 use futures::future::{self, BoxFuture, Shared};
 use futures::{FutureExt as _, StreamExt as _};
@@ -21,6 +20,7 @@ use gpui::{
 use heed::Database;
 use heed::types::SerdeBincode;
 use language_model::{LanguageModelToolUseId, Role, TokenUsage};
+use project::context_server_store::{ContextServerStatus, ContextServerStore};
 use project::{Project, ProjectItem, ProjectPath, Worktree};
 use prompt_store::{
    ProjectContext, PromptBuilder, PromptId, PromptStore, PromptsUpdatedEvent, RulesFileContext,
@@ -28,8 +28,10 @@ use prompt_store::{
 };
 use serde::{Deserialize, Serialize};
 use settings::{Settings as _, SettingsStore};
+use ui::Window;
 use util::ResultExt as _;

+use crate::context_server_tool::ContextServerTool;
 use crate::thread::{
    DetailedSummaryState, ExceededWindowError, MessageId, ProjectSnapshot, Thread, ThreadId,
 };
@@ -57,13 +59,14 @@ impl SharedProjectContext {
    }
 }

+pub type TextThreadStore = assistant_context_editor::ContextStore;
+
 pub struct ThreadStore {
    project: Entity<Project>,
    tools: Entity<ToolWorkingSet>,
    prompt_builder: Arc<PromptBuilder>,
    prompt_store: Option<Entity<PromptStore>>,
-    context_server_manager: Entity<ContextServerManager>,
-    context_server_tool_ids: HashMap<Arc<str>, Vec<ToolId>>,
+    context_server_tool_ids: HashMap<ContextServerId, Vec<ToolId>>,
    threads: Vec<SerializedThreadMetadata>,
    project_context: SharedProjectContext,
    reload_system_prompt_tx: mpsc::Sender<()>,
@@ -108,11 +111,6 @@ impl ThreadStore {
        prompt_store: Option<Entity<PromptStore>>,
        cx: &mut Context<Self>,
    ) -> (Self, oneshot::Receiver<()>) {
-        let context_server_factory_registry = ContextServerDescriptorRegistry::default_global(cx);
-        let context_server_manager = cx.new(|cx| {
-            ContextServerManager::new(context_server_factory_registry, project.clone(), cx)
-        });
-
        let mut subscriptions = vec![
            cx.observe_global::<SettingsStore>(move |this: &mut Self, cx| {
                this.load_default_profile(cx);
@@ -159,7 +157,6 @@ impl ThreadStore {
            tools,
            prompt_builder,
            prompt_store,
-            context_server_manager,
            context_server_tool_ids: HashMap::default(),
            threads: Vec::new(),
            project_context: SharedProjectContext::default(),
@@ -354,10 +351,6 @@ impl ThreadStore {
        })
    }

-    pub fn context_server_manager(&self) -> Entity<ContextServerManager> {
-        self.context_server_manager.clone()
-    }
-
    pub fn prompt_store(&self) -> &Option<Entity<PromptStore>> {
        &self.prompt_store
    }
@@ -371,6 +364,10 @@ impl ThreadStore {
        self.threads.len()
    }

+    pub fn unordered_threads(&self) -> impl Iterator<Item = &SerializedThreadMetadata> {
+        self.threads.iter()
+    }
+
    pub fn reverse_chronological_threads(&self) -> Vec<SerializedThreadMetadata> {
        let mut threads = self.threads.iter().cloned().collect::<Vec<_>>();
        threads.sort_unstable_by_key(|thread| std::cmp::Reverse(thread.updated_at));
@@ -392,18 +389,20 @@ impl ThreadStore {
    pub fn open_thread(
        &self,
        id: &ThreadId,
+        window: &mut Window,
        cx: &mut Context<Self>,
    ) -> Task<Result<Entity<Thread>>> {
        let id = id.clone();
        let database_future = ThreadsDatabase::global_future(cx);
-        cx.spawn(async move |this, cx| {
+        let this = cx.weak_entity();
+        window.spawn(cx, async move |cx| {
            let database = database_future.await.map_err(|err| anyhow!(err))?;
            let thread = database
                .try_find_thread(id.clone())
                .await?
                .ok_or_else(|| anyhow!("no thread found with ID: {id:?}"))?;

-            let thread = this.update(cx, |this, cx| {
+            let thread = this.update_in(cx, |this, window, cx| {
                cx.new(|cx| {
                    Thread::deserialize(
                        id.clone(),
@@ -412,6 +411,7 @@ impl ThreadStore {
                        this.tools.clone(),
                        this.prompt_builder.clone(),
                        this.project_context.clone(),
+                        window,
                        cx,
                    )
                })
@@ -494,11 +494,17 @@ impl ThreadStore {
        });

        if profile.enable_all_context_servers {
-            for context_server in self.context_server_manager.read(cx).all_servers() {
+            for context_server_id in self
+                .project
+                .read(cx)
+                .context_server_store()
+                .read(cx)
+                .all_server_ids()
+            {
                self.tools.update(cx, |tools, cx| {
                    tools.enable_source(
                        ToolSource::ContextServer {
-                            id: context_server.id().into(),
+                            id: context_server_id.0.into(),
                        },
                        cx,
                    );
@@ -541,7 +547,7 @@ impl ThreadStore {

    fn register_context_server_handlers(&self, cx: &mut Context<Self>) {
        cx.subscribe(
-            &self.context_server_manager.clone(),
+            &self.project.read(cx).context_server_store(),
            Self::handle_context_server_event,
        )
        .detach();
@@ -549,18 +555,19 @@ impl ThreadStore {

    fn handle_context_server_event(
        &mut self,
-        context_server_manager: Entity<ContextServerManager>,
-        event: &context_server::manager::Event,
+        context_server_store: Entity<ContextServerStore>,
+        event: &project::context_server_store::Event,
        cx: &mut Context<Self>,
    ) {
        let tool_working_set = self.tools.clone();
        match event {
-            context_server::manager::Event::ServerStatusChanged { server_id, status } => {
+            project::context_server_store::Event::ServerStatusChanged { server_id, status } => {
                match status {
-                    Some(ContextServerStatus::Running) => {
-                        if let Some(server) = context_server_manager.read(cx).get_server(server_id)
+                    ContextServerStatus::Running => {
+                        if let Some(server) =
+                            context_server_store.read(cx).get_running_server(server_id)
                        {
-                            let context_server_manager = context_server_manager.clone();
+                            let context_server_manager = context_server_store.clone();
                            cx.spawn({
                                let server = server.clone();
                                let server_id = server_id.clone();
@@ -608,7 +615,7 @@ impl ThreadStore {
                            .detach();
                        }
                    }
-                    None => {
+                    ContextServerStatus::Stopped | ContextServerStatus::Error(_) => {
                        if let Some(tool_ids) = self.context_server_tool_ids.remove(server_id) {
                            tool_working_set.update(cx, |tool_working_set, _| {
                                tool_working_set.remove(&tool_ids);
@@ -648,6 +655,8 @@ pub struct SerializedThread {
    pub exceeded_window_error: Option<ExceededWindowError>,
    #[serde(default)]
    pub model: Option<SerializedLanguageModel>,
+    #[serde(default)]
+    pub completion_mode: Option<CompletionMode>,
 }

 #[derive(Serialize, Deserialize, Debug)]
@@ -767,6 +776,7 @@ pub struct SerializedToolResult {
    pub tool_use_id: LanguageModelToolUseId,
    pub is_error: bool,
    pub content: Arc<str>,
+    pub output: Option<serde_json::Value>,
 }

 #[derive(Serialize, Deserialize)]
@@ -791,6 +801,7 @@ impl LegacySerializedThread {
            detailed_summary_state: DetailedSummaryState::default(),
            exceeded_window_error: None,
            model: None,
+            completion_mode: None,
        }
    }
 }
--- a/crates/agent/src/tool_use.rs
+++ b/crates/agent/src/tool_use.rs
@@ -1,7 +1,7 @@
 use std::sync::Arc;

 use anyhow::Result;
-use assistant_tool::{AnyToolCard, Tool, ToolUseStatus, ToolWorkingSet};
+use assistant_tool::{AnyToolCard, Tool, ToolResultOutput, ToolUseStatus, ToolWorkingSet};
 use collections::HashMap;
 use futures::FutureExt as _;
 use futures::future::Shared;
@@ -10,7 +10,8 @@ use language_model::{
    ConfiguredModel, LanguageModel, LanguageModelRequestMessage, LanguageModelToolResult,
    LanguageModelToolUse, LanguageModelToolUseId, MessageContent, Role,
 };
-use ui::IconName;
+use project::Project;
+use ui::{IconName, Window};
 use util::truncate_lines_to_byte_limit;

 use crate::thread::{MessageId, PromptId, ThreadId};
@@ -54,6 +55,9 @@ impl ToolUseState {
    pub fn from_serialized_messages(
        tools: Entity<ToolWorkingSet>,
        messages: &[SerializedMessage],
+        project: Entity<Project>,
+        window: &mut Window,
+        cx: &mut App,
    ) -> Self {
        let mut this = Self::new(tools);
        let mut tool_names_by_id = HashMap::default();
@@ -93,12 +97,23 @@ impl ToolUseState {
                            this.tool_results.insert(
                                tool_use_id.clone(),
                                LanguageModelToolResult {
-                                    tool_use_id,
+                                    tool_use_id: tool_use_id.clone(),
                                    tool_name: tool_use.clone(),
                                    is_error: tool_result.is_error,
                                    content: tool_result.content.clone(),
+                                    output: tool_result.output.clone(),
                                },
                            );
+
+                            if let Some(tool) = this.tools.read(cx).tool(tool_use, cx) {
+                                if let Some(output) = tool_result.output.clone() {
+                                    if let Some(card) =
+                                        tool.deserialize_card(output, project.clone(), window, cx)
+                                    {
+                                        this.tool_result_cards.insert(tool_use_id, card);
+                                    }
+                                }
+                            }
                        }
                    }
                }
@@ -110,20 +125,28 @@ impl ToolUseState {
    }

    pub fn cancel_pending(&mut self) -> Vec<PendingToolUse> {
-        let mut pending_tools = Vec::new();
-        for (tool_use_id, tool_use) in self.pending_tool_uses_by_id.drain() {
-            self.tool_results.insert(
-                tool_use_id.clone(),
-                LanguageModelToolResult {
-                    tool_use_id,
-                    tool_name: tool_use.name.clone(),
-                    content: "Tool canceled by user".into(),
-                    is_error: true,
-                },
-            );
-            pending_tools.push(tool_use.clone());
-        }
-        pending_tools
+        let mut cancelled_tool_uses = Vec::new();
+        self.pending_tool_uses_by_id
+            .retain(|tool_use_id, tool_use| {
+                if matches!(tool_use.status, PendingToolUseStatus::Error { .. }) {
+                    return true;
+                }
+
+                let content = "Tool canceled by user".into();
+                self.tool_results.insert(
+                    tool_use_id.clone(),
+                    LanguageModelToolResult {
+                        tool_use_id: tool_use_id.clone(),
+                        tool_name: tool_use.name.clone(),
+                        content,
+                        output: None,
+                        is_error: true,
+                    },
+                );
+                cancelled_tool_uses.push(tool_use.clone());
+                false
+            });
+        cancelled_tool_uses
    }

    pub fn pending_tool_uses(&self) -> Vec<&PendingToolUse> {
@@ -352,7 +375,7 @@ impl ToolUseState {
        &mut self,
        tool_use_id: LanguageModelToolUseId,
        tool_name: Arc<str>,
-        output: Result<String>,
+        output: Result<ToolResultOutput>,
        configured_model: Option<&ConfiguredModel>,
    ) -> Option<PendingToolUse> {
        let metadata = self.tool_use_metadata_by_id.remove(&tool_use_id);
@@ -372,7 +395,8 @@ impl ToolUseState {
        );

        match output {
-            Ok(tool_result) => {
+            Ok(output) => {
+                let tool_result = output.content;
                const BYTES_PER_TOKEN_ESTIMATE: usize = 3;

                // Protect from clearly large output
@@ -399,6 +423,7 @@ impl ToolUseState {
                        tool_name,
                        content: tool_result.into(),
                        is_error: false,
+                        output: output.output,
                    },
                );
                self.pending_tool_uses_by_id.remove(&tool_use_id)
@@ -411,6 +436,7 @@ impl ToolUseState {
                        tool_name,
                        content: err.to_string().into(),
                        is_error: true,
+                        output: None,
                    },
                );

@@ -483,6 +509,7 @@ impl ToolUseState {
                        } else {
                            tool_result.content.clone()
                        },
+                        output: None,
                    }));
            }
        }
--- a/crates/agent/src/trial_markdown.md
+++ b/crates/agent/src/trial_markdown.md
@@ -0,0 +1,3 @@
+# Build better with Zed Pro
+
+Try [Zed Pro](https://zed.dev/pricing) for free for 14 days - no credit card required. Only $20/month afterward. Cancel anytime.
--- a/crates/agent/src/ui.rs
+++ b/crates/agent/src/ui.rs
@@ -1,14 +1,13 @@
 mod agent_notification;
-pub mod agent_preview;
 mod animated_label;
 mod context_pill;
 mod max_mode_tooltip;
+mod onboarding_modal;
+pub mod preview;
 mod upsell;
-mod usage_banner;

 pub use agent_notification::*;
-pub use agent_preview::*;
 pub use animated_label::*;
 pub use context_pill::*;
 pub use max_mode_tooltip::*;
-pub use usage_banner::*;
+pub use onboarding_modal::*;
--- a/crates/agent/src/ui/context_pill.rs
+++ b/crates/agent/src/ui/context_pill.rs
@@ -16,7 +16,8 @@ use crate::context::{
    AgentContext, AgentContextHandle, ContextId, ContextKind, DirectoryContext,
    DirectoryContextHandle, FetchedUrlContext, FileContext, FileContextHandle, ImageContext,
    ImageStatus, RulesContext, RulesContextHandle, SelectionContext, SelectionContextHandle,
-    SymbolContext, SymbolContextHandle, ThreadContext, ThreadContextHandle,
+    SymbolContext, SymbolContextHandle, TextThreadContext, TextThreadContextHandle, ThreadContext,
+    ThreadContextHandle,
 };

 #[derive(IntoElement)]
@@ -301,6 +302,7 @@ impl AddedContext {
            AgentContextHandle::Selection(handle) => Self::pending_selection(handle, cx),
            AgentContextHandle::FetchedUrl(handle) => Some(Self::fetched_url(handle)),
            AgentContextHandle::Thread(handle) => Some(Self::pending_thread(handle, cx)),
+            AgentContextHandle::TextThread(handle) => Some(Self::pending_text_thread(handle, cx)),
            AgentContextHandle::Rules(handle) => Self::pending_rules(handle, prompt_store, cx),
            AgentContextHandle::Image(handle) => Some(Self::image(handle)),
        }
@@ -314,6 +316,7 @@ impl AddedContext {
            AgentContext::Selection(context) => Self::attached_selection(context, cx),
            AgentContext::FetchedUrl(context) => Self::fetched_url(context.clone()),
            AgentContext::Thread(context) => Self::attached_thread(context),
+            AgentContext::TextThread(context) => Self::attached_text_thread(context),
            AgentContext::Rules(context) => Self::attached_rules(context),
            AgentContext::Image(context) => Self::image(context.clone()),
        }
@@ -520,6 +523,43 @@ impl AddedContext {
        }
    }

+    fn pending_text_thread(handle: TextThreadContextHandle, cx: &App) -> AddedContext {
+        AddedContext {
+            kind: ContextKind::TextThread,
+            name: handle.title(cx),
+            parent: None,
+            tooltip: None,
+            icon_path: None,
+            status: ContextStatus::Ready,
+            render_hover: {
+                let context = handle.context.clone();
+                Some(Rc::new(move |_, cx| {
+                    let text = context.read(cx).to_xml(cx);
+                    ContextPillHover::new_text(text.into(), cx).into()
+                }))
+            },
+            handle: AgentContextHandle::TextThread(handle),
+        }
+    }
+
+    fn attached_text_thread(context: &TextThreadContext) -> AddedContext {
+        AddedContext {
+            kind: ContextKind::TextThread,
+            name: context.title.clone(),
+            parent: None,
+            tooltip: None,
+            icon_path: None,
+            status: ContextStatus::Ready,
+            render_hover: {
+                let text = context.text.clone();
+                Some(Rc::new(move |_, cx| {
+                    ContextPillHover::new_text(text.clone(), cx).into()
+                }))
+            },
+            handle: AgentContextHandle::TextThread(context.handle.clone()),
+        }
+    }
+
    fn pending_rules(
        handle: RulesContextHandle,
        prompt_store: Option<&Entity<PromptStore>>,
--- a/crates/agent/src/ui/max_mode_tooltip.rs
+++ b/crates/agent/src/ui/max_mode_tooltip.rs
@@ -1,24 +1,50 @@
 use gpui::{Context, IntoElement, Render, Window};
 use ui::{prelude::*, tooltip_container};

-pub struct MaxModeTooltip;
+pub struct MaxModeTooltip {
+    selected: bool,
+}

 impl MaxModeTooltip {
-    pub fn new(_cx: &mut Context<Self>) -> Self {
-        Self
+    pub fn new() -> Self {
+        Self { selected: false }
+    }
+
+    pub fn selected(mut self, selected: bool) -> Self {
+        self.selected = selected;
+        self
    }
 }

 impl Render for MaxModeTooltip {
-    fn render(&mut self, _window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
-        tooltip_container(_window, cx, |this, _, _| {
+    fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
+        tooltip_container(window, cx, |this, _, _| {
            this.gap_1()
-                .child(
-                    h_flex()
-                        .gap_1p5()
-                        .child(Icon::new(IconName::ZedMaxMode).size(IconSize::Small))
-                        .child(Label::new("Zed's Max Mode"))
-                )
+                .map(|header| if self.selected {
+                    header.child(
+                        h_flex()
+                            .justify_between()
+                            .child(
+                                h_flex()
+                                    .gap_1p5()
+                                    .child(Icon::new(IconName::ZedMaxMode).size(IconSize::Small).color(Color::Accent))
+                                    .child(Label::new("Zed's Max Mode"))
+                            )
+                            .child(
+                                h_flex()
+                                    .gap_0p5()
+                                    .child(Icon::new(IconName::Check).size(IconSize::XSmall).color(Color::Accent))
+                                    .child(Label::new("Turned On").size(LabelSize::XSmall).color(Color::Accent))
+                            )
+                    )
+                } else {
+                    header.child(
+                        h_flex()
+                            .gap_1p5()
+                            .child(Icon::new(IconName::ZedMaxMode).size(IconSize::Small))
+                            .child(Label::new("Zed's Max Mode"))
+                    )
+                })
                .child(
                    div()
                        .max_w_72()
--- a/crates/agent/src/ui/onboarding_modal.rs
+++ b/crates/agent/src/ui/onboarding_modal.rs
@@ -0,0 +1,174 @@
+use gpui::{
+    ClickEvent, DismissEvent, Entity, EventEmitter, FocusHandle, Focusable, MouseDownEvent, Render,
+};
+use ui::{TintColor, Vector, VectorName, prelude::*};
+use workspace::{ModalView, Workspace};
+
+use crate::assistant_panel::AssistantPanel;
+
+macro_rules! agent_onboarding_event {
+    ($name:expr) => {
+        telemetry::event!($name, source = "Agent Onboarding");
+    };
+    ($name:expr, $($key:ident $(= $value:expr)?),+ $(,)?) => {
+        telemetry::event!($name, source = "Agent Onboarding", $($key $(= $value)?),+);
+    };
+}
+
+pub struct AgentOnboardingModal {
+    focus_handle: FocusHandle,
+    workspace: Entity<Workspace>,
+}
+
+impl AgentOnboardingModal {
+    pub fn toggle(workspace: &mut Workspace, window: &mut Window, cx: &mut Context<Workspace>) {
+        let workspace_entity = cx.entity();
+        workspace.toggle_modal(window, cx, |_window, cx| Self {
+            workspace: workspace_entity,
+            focus_handle: cx.focus_handle(),
+        });
+    }
+
+    fn open_panel(&mut self, _: &ClickEvent, window: &mut Window, cx: &mut Context<Self>) {
+        self.workspace.update(cx, |workspace, cx| {
+            workspace.focus_panel::<AssistantPanel>(window, cx);
+        });
+
+        cx.emit(DismissEvent);
+
+        agent_onboarding_event!("Open Panel Clicked");
+    }
+
+    fn view_blog(&mut self, _: &ClickEvent, _: &mut Window, cx: &mut Context<Self>) {
+        cx.open_url("http://zed.dev/blog/fastest-ai-code-editor");
+        cx.notify();
+
+        agent_onboarding_event!("Blog Link Clicked");
+    }
+
+    fn cancel(&mut self, _: &menu::Cancel, _: &mut Window, cx: &mut Context<Self>) {
+        cx.emit(DismissEvent);
+    }
+}
+
+impl EventEmitter<DismissEvent> for AgentOnboardingModal {}
+
+impl Focusable for AgentOnboardingModal {
+    fn focus_handle(&self, _cx: &App) -> FocusHandle {
+        self.focus_handle.clone()
+    }
+}
+
+impl ModalView for AgentOnboardingModal {}
+
+impl Render for AgentOnboardingModal {
+    fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
+        let window_height = window.viewport_size().height;
+        let max_height = window_height - px(200.);
+
+        let base = v_flex()
+            .id("agent-onboarding")
+            .key_context("AgentOnboardingModal")
+            .relative()
+            .w(px(450.))
+            .h_full()
+            .max_h(max_height)
+            .p_4()
+            .gap_2()
+            .elevation_3(cx)
+            .track_focus(&self.focus_handle(cx))
+            .overflow_hidden()
+            .on_action(cx.listener(Self::cancel))
+            .on_action(cx.listener(|_, _: &menu::Cancel, _window, cx| {
+                agent_onboarding_event!("Canceled", trigger = "Action");
+                cx.emit(DismissEvent);
+            }))
+            .on_any_mouse_down(cx.listener(|this, _: &MouseDownEvent, window, _cx| {
+                this.focus_handle.focus(window);
+            }))
+            .child(
+                div()
+                    .absolute()
+                    .top_0()
+                    .right(px(-1.0))
+                    .w(px(441.))
+                    .h(px(240.))
+                    .child(
+                        Vector::new(VectorName::Grid, rems_from_px(441.), rems_from_px(240.))
+                            .color(ui::Color::Custom(cx.theme().colors().text.alpha(0.05))),
+                    ),
+            )
+            .child(
+                div()
+                    .absolute()
+                    .top(px(-8.0))
+                    .right_0()
+                    .w(px(400.))
+                    .h(px(92.))
+                    .child(
+                        Vector::new(VectorName::AiGrid, rems_from_px(400.), rems_from_px(92.))
+                            .color(ui::Color::Custom(cx.theme().colors().text.alpha(0.32))),
+                    ),
+            )
+            .child(
+                div()
+                    .absolute()
+                    .inset_0()
+                    .size_full()
+                    .bg(gpui::linear_gradient(
+                        175.,
+                        gpui::linear_color_stop(
+                            cx.theme().colors().elevated_surface_background,
+                            0.,
+                        ),
+                        gpui::linear_color_stop(
+                            cx.theme().colors().elevated_surface_background.opacity(0.),
+                            0.8,
+                        ),
+                    )),
+            )
+            .child(
+                v_flex()
+                    .w_full()
+                    .gap_1()
+                    .child(
+                        Label::new("Introducing")
+                            .size(LabelSize::Small)
+                            .color(Color::Muted),
+                    )
+                    .child(Headline::new("Agentic Editing in Zed").size(HeadlineSize::Large)),
+            )
+            .child(h_flex().absolute().top_2().right_2().child(
+                IconButton::new("cancel", IconName::X).on_click(cx.listener(
+                    |_, _: &ClickEvent, _window, cx| {
+                        agent_onboarding_event!("Cancelled", trigger = "X click");
+                        cx.emit(DismissEvent);
+                    },
+                )),
+            ));
+
+        let open_panel_button = Button::new("open-panel", "Get Started with the Agent Panel")
+            .icon_size(IconSize::Indicator)
+            .style(ButtonStyle::Tinted(TintColor::Accent))
+            .full_width()
+            .on_click(cx.listener(Self::open_panel));
+
+        let blog_post_button = Button::new("view-blog", "Check out the Blog Post")
+            .icon(IconName::ArrowUpRight)
+            .icon_size(IconSize::Indicator)
+            .icon_color(Color::Muted)
+            .full_width()
+            .on_click(cx.listener(Self::view_blog));
+
+        let copy = "Zed now natively supports agentic editing, enabling fluid collaboration between humans and AI.";
+
+        base.child(Label::new(copy).color(Color::Muted)).child(
+            v_flex()
+                .w_full()
+                .mt_2()
+                .gap_2()
+                .child(open_panel_button)
+                .child(blog_post_button),
+        )
+    }
+}
--- a/crates/agent/src/ui/preview.rs
+++ b/crates/agent/src/ui/preview.rs
@@ -0,0 +1,5 @@
+mod agent_preview;
+mod usage_callouts;
+
+pub use agent_preview::*;
+pub use usage_callouts::*;
--- a/crates/agent/src/ui/preview/agent_preview.rs
+++ b/crates/agent/src/ui/preview/agent_preview.rs
@@ -6,16 +6,11 @@ use std::sync::OnceLock;
 use ui::{AnyElement, Component, ComponentScope, Window};
 use workspace::Workspace;

-use crate::{ActiveThread, ThreadStore};
+use crate::ActiveThread;

 /// Function type for creating agent component previews
-pub type PreviewFn = fn(
-    WeakEntity<Workspace>,
-    Entity<ActiveThread>,
-    WeakEntity<ThreadStore>,
-    &mut Window,
-    &mut App,
-) -> Option<AnyElement>;
+pub type PreviewFn =
+    fn(WeakEntity<Workspace>, Entity<ActiveThread>, &mut Window, &mut App) -> Option<AnyElement>;

 /// Distributed slice for preview registration functions
 #[distributed_slice]
@@ -32,7 +27,6 @@ pub trait AgentPreview: Component + Sized {
    fn agent_preview(
        workspace: WeakEntity<Workspace>,
        active_thread: Entity<ActiveThread>,
-        thread_store: WeakEntity<ThreadStore>,
        window: &mut Window,
        cx: &mut App,
    ) -> Option<AnyElement>;
@@ -42,14 +36,14 @@ pub trait AgentPreview: Component + Sized {
 #[macro_export]
 macro_rules! register_agent_preview {
    ($type:ty) => {
-        #[linkme::distributed_slice($crate::ui::agent_preview::__ALL_AGENT_PREVIEWS)]
+        #[linkme::distributed_slice($crate::ui::preview::__ALL_AGENT_PREVIEWS)]
        static __REGISTER_AGENT_PREVIEW: fn() -> (
            component::ComponentId,
-            $crate::ui::agent_preview::PreviewFn,
+            $crate::ui::preview::PreviewFn,
        ) = || {
            (
                <$type as component::Component>::id(),
-                <$type as $crate::ui::agent_preview::AgentPreview>::agent_preview,
+                <$type as $crate::ui::preview::AgentPreview>::agent_preview,
            )
        };
    };
@@ -75,14 +69,13 @@ pub fn get_agent_preview(
    id: &ComponentId,
    workspace: WeakEntity<Workspace>,
    active_thread: Entity<ActiveThread>,
-    thread_store: WeakEntity<ThreadStore>,
    window: &mut Window,
    cx: &mut App,
 ) -> Option<AnyElement> {
    let registry = get_or_init_registry();
    registry
        .get(id)
-        .and_then(|preview_fn| preview_fn(workspace, active_thread, thread_store, window, cx))
+        .and_then(|preview_fn| preview_fn(workspace, active_thread, window, cx))
 }

 /// Get all registered agent previews.
--- a/crates/agent/src/ui/preview/usage_callouts.rs
+++ b/crates/agent/src/ui/preview/usage_callouts.rs
@@ -0,0 +1,203 @@
+use client::zed_urls;
+use component::{empty_example, example_group_with_title, single_example};
+use gpui::{AnyElement, App, IntoElement, RenderOnce, Window};
+use language_model::RequestUsage;
+use ui::{Callout, Color, Icon, IconName, IconSize, prelude::*};
+use zed_llm_client::{Plan, UsageLimit};
+
+#[derive(IntoElement, RegisterComponent)]
+pub struct UsageCallout {
+    plan: Plan,
+    usage: RequestUsage,
+}
+
+impl UsageCallout {
+    pub fn new(plan: Plan, usage: RequestUsage) -> Self {
+        Self { plan, usage }
+    }
+}
+
+impl RenderOnce for UsageCallout {
+    fn render(self, _window: &mut Window, cx: &mut App) -> impl IntoElement {
+        let (is_limit_reached, is_approaching_limit, remaining) = match self.usage.limit {
+            UsageLimit::Limited(limit) => {
+                let percentage = self.usage.amount as f32 / limit as f32;
+                let is_limit_reached = percentage >= 1.0;
+                let is_near_limit = percentage >= 0.9 && percentage < 1.0;
+                (
+                    is_limit_reached,
+                    is_near_limit,
+                    limit.saturating_sub(self.usage.amount),
+                )
+            }
+            UsageLimit::Unlimited => (false, false, 0),
+        };
+
+        if !is_limit_reached && !is_approaching_limit {
+            return div().into_any_element();
+        }
+
+        let (title, message, button_text, url) = if is_limit_reached {
+            match self.plan {
+                Plan::Free => (
+                    "Out of free prompts",
+                    "Upgrade to continue, wait for the next reset, or switch to API key."
+                        .to_string(),
+                    "Upgrade",
+                    zed_urls::account_url(cx),
+                ),
+                Plan::ZedProTrial => (
+                    "Out of trial prompts",
+                    "Upgrade to Zed Pro to continue, or switch to API key.".to_string(),
+                    "Upgrade",
+                    zed_urls::account_url(cx),
+                ),
+                Plan::ZedPro => (
+                    "Out of included prompts",
+                    "Enable usage-based billing to continue.".to_string(),
+                    "Manage",
+                    zed_urls::account_url(cx),
+                ),
+            }
+        } else {
+            match self.plan {
+                Plan::Free => (
+                    "Reaching free plan limit soon",
+                    format!(
+                        "{remaining} remaining - Upgrade to increase limit, or switch providers",
+                    ),
+                    "Upgrade",
+                    zed_urls::account_url(cx),
+                ),
+                Plan::ZedProTrial => (
+                    "Reaching trial limit soon",
+                    format!(
+                        "{remaining} remaining - Upgrade to increase limit, or switch providers",
+                    ),
+                    "Upgrade",
+                    zed_urls::account_url(cx),
+                ),
+                _ => return div().into_any_element(),
+            }
+        };
+
+        let icon = if is_limit_reached {
+            Icon::new(IconName::X)
+                .color(Color::Error)
+                .size(IconSize::XSmall)
+        } else {
+            Icon::new(IconName::Warning)
+                .color(Color::Warning)
+                .size(IconSize::XSmall)
+        };
+
+        Callout::multi_line(
+            title,
+            message,
+            icon,
+            button_text,
+            Box::new(move |_, _, cx| {
+                cx.open_url(&url);
+            }),
+        )
+        .into_any_element()
+    }
+}
+
+impl Component for UsageCallout {
+    fn scope() -> ComponentScope {
+        ComponentScope::Agent
+    }
+
+    fn sort_name() -> &'static str {
+        "AgentUsageCallout"
+    }
+
+    fn preview(_window: &mut Window, _cx: &mut App) -> Option<AnyElement> {
+        let free_examples = example_group_with_title(
+            "Free Plan",
+            vec![
+                single_example(
+                    "Approaching limit (90%)",
+                    UsageCallout::new(
+                        Plan::Free,
+                        RequestUsage {
+                            limit: UsageLimit::Limited(50),
+                            amount: 45, // 90% of limit
+                        },
+                    )
+                    .into_any_element(),
+                ),
+                single_example(
+                    "Limit reached (100%)",
+                    UsageCallout::new(
+                        Plan::Free,
+                        RequestUsage {
+                            limit: UsageLimit::Limited(50),
+                            amount: 50, // 100% of limit
+                        },
+                    )
+                    .into_any_element(),
+                ),
+            ],
+        );
+
+        let trial_examples = example_group_with_title(
+            "Zed Pro Trial",
+            vec![
+                single_example(
+                    "Approaching limit (90%)",
+                    UsageCallout::new(
+                        Plan::ZedProTrial,
+                        RequestUsage {
+                            limit: UsageLimit::Limited(150),
+                            amount: 135, // 90% of limit
+                        },
+                    )
+                    .into_any_element(),
+                ),
+                single_example(
+                    "Limit reached (100%)",
+                    UsageCallout::new(
+                        Plan::ZedProTrial,
+                        RequestUsage {
+                            limit: UsageLimit::Limited(150),
+                            amount: 150, // 100% of limit
+                        },
+                    )
+                    .into_any_element(),
+                ),
+            ],
+        );
+
+        let pro_examples = example_group_with_title(
+            "Zed Pro",
+            vec![
+                single_example(
+                    "Limit reached (100%)",
+                    UsageCallout::new(
+                        Plan::ZedPro,
+                        RequestUsage {
+                            limit: UsageLimit::Limited(500),
+                            amount: 500, // 100% of limit
+                        },
+                    )
+                    .into_any_element(),
+                ),
+                empty_example("Unlimited plan (no callout shown)"),
+            ],
+        );
+
+        Some(
+            div()
+                .p_4()
+                .flex()
+                .flex_col()
+                .gap_4()
+                .child(free_examples)
+                .child(trial_examples)
+                .child(pro_examples)
+                .into_any_element(),
+        )
+    }
+}
--- a/crates/agent/src/ui/upsell.rs
+++ b/crates/agent/src/ui/upsell.rs
@@ -15,7 +15,7 @@ use ui::{
 /// ```
 /// let upsell = Upsell::new(
 ///     "Upgrade to Zed Pro",
-///     "Get unlimited access to AI features and more",
+///     "Get access to advanced AI features and more",
 ///     "Upgrade Now",
 ///     Box::new(|_, _window, cx| {
 ///         cx.open_url("https://zed.dev/pricing");
@@ -33,9 +33,9 @@ pub struct Upsell {
    title: SharedString,
    message: SharedString,
    cta_text: SharedString,
-    on_click: Box<dyn Fn(&ClickEvent, &mut Window, &mut App)>,
-    on_dismiss: Box<dyn Fn(&ClickEvent, &mut Window, &mut App)>,
-    on_dont_show_again: Box<dyn Fn(bool, &mut Window, &mut App)>,
+    on_click: Box<dyn Fn(&ClickEvent, &mut Window, &mut App) + 'static>,
+    on_dismiss: Box<dyn Fn(&ClickEvent, &mut Window, &mut App) + 'static>,
+    on_dont_show_again: Box<dyn Fn(bool, &mut Window, &mut App) + 'static>,
 }

 impl Upsell {
@@ -44,9 +44,9 @@ impl Upsell {
        title: impl Into<SharedString>,
        message: impl Into<SharedString>,
        cta_text: impl Into<SharedString>,
-        on_click: Box<dyn Fn(&ClickEvent, &mut Window, &mut App)>,
-        on_dismiss: Box<dyn Fn(&ClickEvent, &mut Window, &mut App)>,
-        on_dont_show_again: Box<dyn Fn(bool, &mut Window, &mut App)>,
+        on_click: Box<dyn Fn(&ClickEvent, &mut Window, &mut App) + 'static>,
+        on_dismiss: Box<dyn Fn(&ClickEvent, &mut Window, &mut App) + 'static>,
+        on_dont_show_again: Box<dyn Fn(bool, &mut Window, &mut App) + 'static>,
    ) -> Self {
        Self {
            title: title.into(),
@@ -105,7 +105,7 @@ impl RenderOnce for Upsell {
                        h_flex()
                            .gap_2()
                            .child(
-                                Button::new("dismiss-button", "Dismiss")
+                                Button::new("dismiss-button", "No Thanks")
                                    .style(ButtonStyle::Subtle)
                                    .on_click(self.on_dismiss),
                            )
--- a/crates/agent/src/ui/usage_banner.rs
+++ b/crates/agent/src/ui/usage_banner.rs
@@ -1,262 +0,0 @@
-use client::zed_urls;
-use language_model::RequestUsage;
-use ui::{Banner, ProgressBar, Severity, prelude::*};
-use zed_llm_client::{Plan, UsageLimit};
-
-#[derive(IntoElement, RegisterComponent)]
-pub struct UsageBanner {
-    plan: Plan,
-    usage: RequestUsage,
-}
-
-impl UsageBanner {
-    pub fn new(plan: Plan, usage: RequestUsage) -> Self {
-        Self { plan, usage }
-    }
-}
-
-impl RenderOnce for UsageBanner {
-    fn render(self, _window: &mut Window, cx: &mut App) -> impl IntoElement {
-        let used_percentage = match self.usage.limit {
-            UsageLimit::Limited(limit) => Some((self.usage.amount as f32 / limit as f32) * 100.),
-            UsageLimit::Unlimited => None,
-        };
-
-        let (severity, message) = match self.usage.limit {
-            UsageLimit::Limited(limit) => {
-                if self.usage.amount >= limit {
-                    let message = match self.plan {
-                        Plan::ZedPro => "Monthly request limit reached",
-                        Plan::ZedProTrial => "Trial request limit reached",
-                        Plan::Free => "Free tier request limit reached",
-                    };
-
-                    (Severity::Error, message)
-                } else if (self.usage.amount as f32 / limit as f32) >= 0.9 {
-                    (Severity::Warning, "Approaching request limit")
-                } else {
-                    let message = match self.plan {
-                        Plan::ZedPro => "Zed Pro",
-                        Plan::ZedProTrial => "Zed Pro (Trial)",
-                        Plan::Free => "Zed Free",
-                    };
-
-                    (Severity::Info, message)
-                }
-            }
-            UsageLimit::Unlimited => {
-                let message = match self.plan {
-                    Plan::ZedPro => "Zed Pro",
-                    Plan::ZedProTrial => "Zed Pro (Trial)",
-                    Plan::Free => "Zed Free",
-                };
-
-                (Severity::Info, message)
-            }
-        };
-
-        let action = match self.plan {
-            Plan::ZedProTrial | Plan::Free => {
-                Button::new("upgrade", "Upgrade").on_click(|_, _window, cx| {
-                    cx.open_url(&zed_urls::account_url(cx));
-                })
-            }
-            Plan::ZedPro => Button::new("manage", "Manage").on_click(|_, _window, cx| {
-                cx.open_url(&zed_urls::account_url(cx));
-            }),
-        };
-
-        Banner::new().severity(severity).child(
-            h_flex().flex_1().gap_1().child(Label::new(message)).child(
-                h_flex()
-                    .flex_1()
-                    .justify_end()
-                    .gap_1p5()
-                    .children(used_percentage.map(|percent| {
-                        h_flex()
-                            .items_center()
-                            .w_full()
-                            .max_w(px(180.))
-                            .child(ProgressBar::new("usage", percent, 100., cx))
-                    }))
-                    .child(
-                        Label::new(match self.usage.limit {
-                            UsageLimit::Limited(limit) => {
-                                format!("{} / {limit}", self.usage.amount)
-                            }
-                            UsageLimit::Unlimited => format!("{} / ∞", self.usage.amount),
-                        })
-                        .size(LabelSize::Small)
-                        .color(Color::Muted),
-                    )
-                    // Note: This should go in the banner's `action_slot`, but doing that messes with the size of the
-                    // progress bar.
-                    .child(action),
-            ),
-        )
-    }
-}
-
-impl Component for UsageBanner {
-    fn scope() -> ComponentScope {
-        ComponentScope::Agent
-    }
-
-    fn sort_name() -> &'static str {
-        "AgentUsageBanner"
-    }
-
-    fn preview(_window: &mut Window, _cx: &mut App) -> Option<AnyElement> {
-        let trial_limit = Plan::ZedProTrial.model_requests_limit();
-        let trial_examples = vec![
-            single_example(
-                "Zed Pro Trial - New User",
-                div()
-                    .size_full()
-                    .child(UsageBanner::new(
-                        Plan::ZedProTrial,
-                        RequestUsage {
-                            limit: trial_limit,
-                            amount: 10,
-                        },
-                    ))
-                    .into_any_element(),
-            ),
-            single_example(
-                "Zed Pro Trial - Approaching Limit",
-                div()
-                    .size_full()
-                    .child(UsageBanner::new(
-                        Plan::ZedProTrial,
-                        RequestUsage {
-                            limit: trial_limit,
-                            amount: 135,
-                        },
-                    ))
-                    .into_any_element(),
-            ),
-            single_example(
-                "Zed Pro Trial - Request Limit Reached",
-                div()
-                    .size_full()
-                    .child(UsageBanner::new(
-                        Plan::ZedProTrial,
-                        RequestUsage {
-                            limit: trial_limit,
-                            amount: 150,
-                        },
-                    ))
-                    .into_any_element(),
-            ),
-        ];
-
-        let free_limit = Plan::Free.model_requests_limit();
-        let free_examples = vec![
-            single_example(
-                "Free - Normal Usage",
-                div()
-                    .size_full()
-                    .child(UsageBanner::new(
-                        Plan::Free,
-                        RequestUsage {
-                            limit: free_limit,
-                            amount: 25,
-                        },
-                    ))
-                    .into_any_element(),
-            ),
-            single_example(
-                "Free - Approaching Limit",
-                div()
-                    .size_full()
-                    .child(UsageBanner::new(
-                        Plan::Free,
-                        RequestUsage {
-                            limit: free_limit,
-                            amount: 45,
-                        },
-                    ))
-                    .into_any_element(),
-            ),
-            single_example(
-                "Free - Request Limit Reached",
-                div()
-                    .size_full()
-                    .child(UsageBanner::new(
-                        Plan::Free,
-                        RequestUsage {
-                            limit: free_limit,
-                            amount: 50,
-                        },
-                    ))
-                    .into_any_element(),
-            ),
-        ];
-
-        let zed_pro_limit = Plan::ZedPro.model_requests_limit();
-        let zed_pro_examples = vec![
-            single_example(
-                "Zed Pro - Normal Usage",
-                div()
-                    .size_full()
-                    .child(UsageBanner::new(
-                        Plan::ZedPro,
-                        RequestUsage {
-                            limit: zed_pro_limit,
-                            amount: 250,
-                        },
-                    ))
-                    .into_any_element(),
-            ),
-            single_example(
-                "Zed Pro - Approaching Limit",
-                div()
-                    .size_full()
-                    .child(UsageBanner::new(
-                        Plan::ZedPro,
-                        RequestUsage {
-                            limit: zed_pro_limit,
-                            amount: 450,
-                        },
-                    ))
-                    .into_any_element(),
-            ),
-            single_example(
-                "Zed Pro - Request Limit Reached",
-                div()
-                    .size_full()
-                    .child(UsageBanner::new(
-                        Plan::ZedPro,
-                        RequestUsage {
-                            limit: zed_pro_limit,
-                            amount: 500,
-                        },
-                    ))
-                    .into_any_element(),
-            ),
-        ];
-
-        Some(
-            v_flex()
-                .gap_6()
-                .p_4()
-                .children(vec![
-                    Label::new("Trial Plan")
-                        .size(LabelSize::Large)
-                        .into_any_element(),
-                    example_group(trial_examples).vertical().into_any_element(),
-                    Label::new("Free Plan")
-                        .size(LabelSize::Large)
-                        .into_any_element(),
-                    example_group(free_examples).vertical().into_any_element(),
-                    Label::new("Pro Plan")
-                        .size(LabelSize::Large)
-                        .into_any_element(),
-                    example_group(zed_pro_examples)
-                        .vertical()
-                        .into_any_element(),
-                ])
-                .into_any_element(),
-        )
-    }
-}
--- a/crates/assistant/Cargo.toml
+++ b/crates/assistant/Cargo.toml
@@ -31,7 +31,6 @@ async-watch.workspace = true
 client.workspace = true
 collections.workspace = true
 command_palette_hooks.workspace = true
-context_server.workspace = true
 db.workspace = true
 editor.workspace = true
 feature_flags.workspace = true
--- a/crates/assistant/src/assistant.rs
+++ b/crates/assistant/src/assistant.rs
@@ -106,7 +106,6 @@ pub fn init(
    assistant_slash_command::init(cx);
    assistant_tool::init(cx);
    assistant_panel::init(cx);
-    context_server::init(cx);

    register_slash_commands(cx);
    inline_assistant::init(
@@ -164,7 +163,7 @@ fn update_active_language_model_from_settings(cx: &mut App) {

    fn to_selected_model(selection: &LanguageModelSelection) -> language_model::SelectedModel {
        language_model::SelectedModel {
-            provider: LanguageModelProviderId::from(selection.provider.clone()),
+            provider: LanguageModelProviderId::from(selection.provider.0.clone()),
            model: LanguageModelId::from(selection.model.clone()),
        }
    }
--- a/crates/assistant/src/assistant_panel.rs
+++ b/crates/assistant/src/assistant_panel.rs
@@ -34,7 +34,7 @@ use smol::stream::StreamExt;

 use std::ops::Range;
 use std::path::Path;
-use std::{ops::ControlFlow, path::PathBuf, sync::Arc};
+use std::{ops::ControlFlow, sync::Arc};
 use terminal_view::{TerminalView, terminal_panel::TerminalPanel};
 use ui::{ContextMenu, PopoverMenu, Tooltip, prelude::*};
 use util::{ResultExt, maybe};
@@ -54,7 +54,7 @@ pub fn init(cx: &mut App) {
                .register_action(ContextEditor::quote_selection)
                .register_action(ContextEditor::insert_selection)
                .register_action(ContextEditor::copy_code)
-                .register_action(ContextEditor::insert_dragged_files)
+                .register_action(ContextEditor::handle_insert_dragged_files)
                .register_action(AssistantPanel::show_configuration)
                .register_action(AssistantPanel::create_new_context)
                .register_action(AssistantPanel::restart_context_servers)
@@ -182,20 +182,7 @@ impl AssistantPanel {
                        None
                    }?;

-                    let paths = project_paths
-                        .into_iter()
-                        .filter_map(|project_path| {
-                            let worktree = project
-                                .read(cx)
-                                .worktree_for_id(project_path.worktree_id, cx)?;
-
-                            let mut full_path = PathBuf::from(worktree.read(cx).root_name());
-                            full_path.push(&project_path.path);
-                            Some(full_path)
-                        })
-                        .collect::<Vec<_>>();
-
-                    Some(InsertDraggedFiles::ProjectPaths(paths))
+                    Some(InsertDraggedFiles::ProjectPaths(project_paths))
                });

                if let Some(action) = action {
@@ -333,7 +320,7 @@ impl AssistantPanel {

        let watch_client_status = Self::watch_client_status(workspace.client().clone(), window, cx);

-        let mut this = Self {
+        Self {
            pane,
            workspace: workspace.weak_handle(),
            width: None,
@@ -349,9 +336,7 @@ impl AssistantPanel {
            client_status: None,
            watch_client_status: Some(watch_client_status),
            show_zed_ai_notice: false,
-        };
-        this.new_context(window, cx);
-        this
+        }
    }

    pub fn toggle_focus(
@@ -1192,21 +1177,19 @@ impl AssistantPanel {

    fn restart_context_servers(
        workspace: &mut Workspace,
-        _action: &context_server::Restart,
+        _action: &project::context_server_store::Restart,
        _: &mut Window,
        cx: &mut Context<Workspace>,
    ) {
-        let Some(assistant_panel) = workspace.panel::<AssistantPanel>(cx) else {
-            return;
-        };
-
-        assistant_panel.update(cx, |assistant_panel, cx| {
-            assistant_panel
-                .context_store
-                .update(cx, |context_store, cx| {
-                    context_store.restart_context_servers(cx);
-                });
-        });
+        workspace
+            .project()
+            .read(cx)
+            .context_server_store()
+            .update(cx, |store, cx| {
+                for server in store.running_servers() {
+                    store.restart_server(&server.id(), cx).log_err();
+                }
+            });
    }
 }

--- a/crates/assistant/src/inline_assistant.rs
+++ b/crates/assistant/src/inline_assistant.rs
@@ -17,9 +17,7 @@ use editor::{
        ToDisplayPoint,
    },
 };
-use feature_flags::{
-    Assistant2FeatureFlag, FeatureFlagAppExt as _, FeatureFlagViewExt as _, ZedProFeatureFlag,
-};
+use feature_flags::{FeatureFlagAppExt as _, ZedProFeatureFlag};
 use fs::Fs;
 use futures::{
    SinkExt, Stream, StreamExt, TryStreamExt as _,
@@ -74,25 +72,19 @@ pub fn init(
    cx: &mut App,
 ) {
    cx.set_global(InlineAssistant::new(fs, prompt_builder, telemetry));
-    cx.observe_new(|_, window, cx| {
-        let Some(window) = window else {
-            return;
-        };
-        let workspace = cx.entity().clone();
-        InlineAssistant::update_global(cx, |inline_assistant, cx| {
-            inline_assistant.register_workspace(&workspace, window, cx)
-        });
-
-        cx.observe_flag::<Assistant2FeatureFlag, _>(window, {
-            |is_assistant2_enabled, _workspace, _window, cx| {
-                InlineAssistant::update_global(cx, |inline_assistant, _cx| {
-                    inline_assistant.is_assistant2_enabled = is_assistant2_enabled;
-                });
-            }
+    // Don't register now that the Agent is released.
+    if false {
+        cx.observe_new(|_, window, cx| {
+            let Some(window) = window else {
+                return;
+            };
+            let workspace = cx.entity().clone();
+            InlineAssistant::update_global(cx, |inline_assistant, cx| {
+                inline_assistant.register_workspace(&workspace, window, cx)
+            });
        })
        .detach();
-    })
-    .detach();
+    }
 }

 const PROMPT_HISTORY_MAX_LEN: usize = 20;
@@ -108,7 +100,6 @@ pub struct InlineAssistant {
    prompt_builder: Arc<PromptBuilder>,
    telemetry: Arc<Telemetry>,
    fs: Arc<dyn Fs>,
-    is_assistant2_enabled: bool,
 }

 impl Global for InlineAssistant {}
@@ -130,7 +121,6 @@ impl InlineAssistant {
            prompt_builder,
            telemetry,
            fs,
-            is_assistant2_enabled: false,
        }
    }

@@ -199,7 +189,7 @@ impl InlineAssistant {
        window: &mut Window,
        cx: &mut App,
    ) {
-        let is_assistant2_enabled = self.is_assistant2_enabled;
+        let is_assistant2_enabled = true;

        if let Some(editor) = item.act_as::<Editor>(cx) {
            editor.update(cx, |editor, cx| {
@@ -2484,7 +2474,7 @@ impl InlineAssist {
                    .read(cx)
                    .active_context(cx)?
                    .read(cx)
-                    .to_completion_request(RequestType::Chat, cx),
+                    .to_completion_request(None, RequestType::Chat, cx),
            )
        } else {
            None
@@ -2870,7 +2860,8 @@ impl CodegenAlternative {
        if let Some(ConfiguredModel { model, .. }) =
            LanguageModelRegistry::read_global(cx).inline_assistant_model()
        {
-            let request = self.build_request(user_prompt, assistant_panel_context.clone(), cx);
+            let request =
+                self.build_request(&model, user_prompt, assistant_panel_context.clone(), cx);
            match request {
                Ok(request) => {
                    let total_count = model.count_tokens(request.clone(), cx);
@@ -2915,7 +2906,8 @@ impl CodegenAlternative {
            if user_prompt.trim().to_lowercase() == "delete" {
                async { Ok(LanguageModelTextStream::default()) }.boxed_local()
            } else {
-                let request = self.build_request(user_prompt, assistant_panel_context, cx)?;
+                let request =
+                    self.build_request(&model, user_prompt, assistant_panel_context, cx)?;
                self.request = Some(request.clone());

                cx.spawn(async move |_, cx| model.stream_completion_text(request, &cx).await)
@@ -2927,6 +2919,7 @@ impl CodegenAlternative {

    fn build_request(
        &self,
+        model: &Arc<dyn LanguageModel>,
        user_prompt: String,
        assistant_panel_context: Option<LanguageModelRequest>,
        cx: &App,
@@ -2981,7 +2974,7 @@ impl CodegenAlternative {
            messages,
            tools: Vec::new(),
            stop: Vec::new(),
-            temperature: None,
+            temperature: AssistantSettings::temperature_for_model(&model, cx),
        })
    }

--- a/crates/assistant/src/terminal_inline_assistant.rs
+++ b/crates/assistant/src/terminal_inline_assistant.rs
@@ -261,7 +261,7 @@ impl TerminalInlineAssistant {
                        .read(cx)
                        .active_context(cx)?
                        .read(cx)
-                        .to_completion_request(RequestType::Chat, cx),
+                        .to_completion_request(None, RequestType::Chat, cx),
                )
            })
        } else {
--- a/crates/assistant_context_editor/Cargo.toml
+++ b/crates/assistant_context_editor/Cargo.toml
@@ -22,7 +22,6 @@ clock.workspace = true
 collections.workspace = true
 context_server.workspace = true
 editor.workspace = true
-feature_flags.workspace = true
 fs.workspace = true
 futures.workspace = true
 fuzzy.workspace = true
--- a/crates/assistant_context_editor/src/context.rs
+++ b/crates/assistant_context_editor/src/context.rs
@@ -3,6 +3,7 @@ mod context_tests;

 use crate::patch::{AssistantEdit, AssistantPatch, AssistantPatchStatus};
 use anyhow::{Context as _, Result, anyhow};
+use assistant_settings::AssistantSettings;
 use assistant_slash_command::{
    SlashCommandContent, SlashCommandEvent, SlashCommandLine, SlashCommandOutputSection,
    SlashCommandResult, SlashCommandWorkingSet,
@@ -32,7 +33,7 @@ use serde::{Deserialize, Serialize};
 use smallvec::SmallVec;
 use std::{
    cmp::{Ordering, max},
-    fmt::Debug,
+    fmt::{Debug, Write as _},
    iter, mem,
    ops::Range,
    path::Path,
@@ -1273,10 +1274,10 @@ impl AssistantContext {
    pub(crate) fn count_remaining_tokens(&mut self, cx: &mut Context<Self>) {
        // Assume it will be a Chat request, even though that takes fewer tokens (and risks going over the limit),
        // because otherwise you see in the UI that your empty message has a bunch of tokens already used.
-        let request = self.to_completion_request(RequestType::Chat, cx);
        let Some(model) = LanguageModelRegistry::read_global(cx).default_model() else {
            return;
        };
+        let request = self.to_completion_request(Some(&model.model), RequestType::Chat, cx);
        let debounce = self.token_count.is_some();
        self.pending_token_count = cx.spawn(async move |this, cx| {
            async move {
@@ -1422,7 +1423,7 @@ impl AssistantContext {
        }

        let request = {
-            let mut req = self.to_completion_request(RequestType::Chat, cx);
+            let mut req = self.to_completion_request(Some(&model), RequestType::Chat, cx);
            // Skip the last message because it's likely to change and
            // therefore would be a waste to cache.
            req.messages.pop();
@@ -2321,7 +2322,7 @@ impl AssistantContext {
        // Compute which messages to cache, including the last one.
        self.mark_cache_anchors(&model.cache_configuration(), false, cx);

-        let request = self.to_completion_request(request_type, cx);
+        let request = self.to_completion_request(Some(&model), request_type, cx);

        let assistant_message = self
            .insert_message_after(last_message_id, Role::Assistant, MessageStatus::Pending, cx)
@@ -2539,8 +2540,29 @@ impl AssistantContext {
        Some(user_message)
    }

+    pub fn to_xml(&self, cx: &App) -> String {
+        let mut output = String::new();
+        let buffer = self.buffer.read(cx);
+        for message in self.messages(cx) {
+            if message.status != MessageStatus::Done {
+                continue;
+            }
+
+            writeln!(&mut output, "<{}>", message.role).unwrap();
+            for chunk in buffer.text_for_range(message.offset_range) {
+                output.push_str(chunk);
+            }
+            if !output.ends_with('\n') {
+                output.push('\n');
+            }
+            writeln!(&mut output, "</{}>", message.role).unwrap();
+        }
+        output
+    }
+
    pub fn to_completion_request(
        &self,
+        model: Option<&Arc<dyn LanguageModel>>,
        request_type: RequestType,
        cx: &App,
    ) -> LanguageModelRequest {
@@ -2564,7 +2586,8 @@ impl AssistantContext {
            messages: Vec::new(),
            tools: Vec::new(),
            stop: Vec::new(),
-            temperature: None,
+            temperature: model
+                .and_then(|model| AssistantSettings::temperature_for_model(model, cx)),
        };
        for message in self.messages(cx) {
            if message.status != MessageStatus::Done {
@@ -2961,7 +2984,7 @@ impl AssistantContext {
                return;
            }

-            let mut request = self.to_completion_request(RequestType::Chat, cx);
+            let mut request = self.to_completion_request(Some(&model.model), RequestType::Chat, cx);
            request.messages.push(LanguageModelRequestMessage {
                role: Role::User,
                content: vec![
--- a/crates/assistant_context_editor/src/context/context_tests.rs
+++ b/crates/assistant_context_editor/src/context/context_tests.rs
@@ -43,9 +43,8 @@ use workspace::Workspace;

 #[gpui::test]
 fn test_inserting_and_removing_messages(cx: &mut App) {
-    let settings_store = SettingsStore::test(cx);
-    LanguageModelRegistry::test(cx);
-    cx.set_global(settings_store);
+    init_test(cx);
+
    let registry = Arc::new(LanguageRegistry::test(cx.background_executor().clone()));
    let prompt_builder = Arc::new(PromptBuilder::new(None).unwrap());
    let context = cx.new(|cx| {
@@ -182,9 +181,8 @@ fn test_inserting_and_removing_messages(cx: &mut App) {

 #[gpui::test]
 fn test_message_splitting(cx: &mut App) {
-    let settings_store = SettingsStore::test(cx);
-    cx.set_global(settings_store);
-    LanguageModelRegistry::test(cx);
+    init_test(cx);
+
    let registry = Arc::new(LanguageRegistry::test(cx.background_executor().clone()));

    let prompt_builder = Arc::new(PromptBuilder::new(None).unwrap());
@@ -285,9 +283,8 @@ fn test_message_splitting(cx: &mut App) {

 #[gpui::test]
 fn test_messages_for_offsets(cx: &mut App) {
-    let settings_store = SettingsStore::test(cx);
-    LanguageModelRegistry::test(cx);
-    cx.set_global(settings_store);
+    init_test(cx);
+
    let registry = Arc::new(LanguageRegistry::test(cx.background_executor().clone()));
    let prompt_builder = Arc::new(PromptBuilder::new(None).unwrap());
    let context = cx.new(|cx| {
@@ -378,10 +375,8 @@ fn test_messages_for_offsets(cx: &mut App) {

 #[gpui::test]
 async fn test_slash_commands(cx: &mut TestAppContext) {
-    let settings_store = cx.update(SettingsStore::test);
-    cx.set_global(settings_store);
-    cx.update(LanguageModelRegistry::test);
-    cx.update(Project::init_settings);
+    cx.update(init_test);
+
    let fs = FakeFs::new(cx.background_executor.clone());

    fs.insert_tree(
@@ -671,22 +666,19 @@ async fn test_slash_commands(cx: &mut TestAppContext) {

 #[gpui::test]
 async fn test_workflow_step_parsing(cx: &mut TestAppContext) {
-    cx.update(prompt_store::init);
-    let mut settings_store = cx.update(SettingsStore::test);
    cx.update(|cx| {
-        settings_store
-            .set_user_settings(
-                r#"{ "assistant": { "enable_experimental_live_diffs": true } }"#,
-                cx,
-            )
-            .unwrap()
+        init_test(cx);
+        cx.update_global(|settings_store: &mut SettingsStore, cx| {
+            settings_store
+                .set_user_settings(
+                    r#"{ "assistant": { "enable_experimental_live_diffs": true } }"#,
+                    cx,
+                )
+                .unwrap()
+        })
    });
-    cx.set_global(settings_store);
-    cx.update(language::init);
-    cx.update(Project::init_settings);
    let fs = FakeFs::new(cx.executor());
    let project = Project::test(fs, [Path::new("/root")], cx).await;
-    cx.update(LanguageModelRegistry::test);

    let registry = Arc::new(LanguageRegistry::test(cx.executor()));

@@ -1069,9 +1061,8 @@ async fn test_workflow_step_parsing(cx: &mut TestAppContext) {

 #[gpui::test]
 async fn test_serialization(cx: &mut TestAppContext) {
-    let settings_store = cx.update(SettingsStore::test);
-    cx.set_global(settings_store);
-    cx.update(LanguageModelRegistry::test);
+    cx.update(init_test);
+
    let registry = Arc::new(LanguageRegistry::test(cx.executor()));
    let prompt_builder = Arc::new(PromptBuilder::new(None).unwrap());
    let context = cx.new(|cx| {
@@ -1147,6 +1138,8 @@ async fn test_serialization(cx: &mut TestAppContext) {

 #[gpui::test(iterations = 100)]
 async fn test_random_context_collaboration(cx: &mut TestAppContext, mut rng: StdRng) {
+    cx.update(init_test);
+
    let min_peers = env::var("MIN_PEERS")
        .map(|i| i.parse().expect("invalid `MIN_PEERS` variable"))
        .unwrap_or(2);
@@ -1157,10 +1150,6 @@ async fn test_random_context_collaboration(cx: &mut TestAppContext, mut rng: Std
        .map(|i| i.parse().expect("invalid `OPERATIONS` variable"))
        .unwrap_or(50);

-    let settings_store = cx.update(SettingsStore::test);
-    cx.set_global(settings_store);
-    cx.update(LanguageModelRegistry::test);
-
    let slash_commands = cx.update(SlashCommandRegistry::default_global);
    slash_commands.register_command(FakeSlashCommand("cmd-1".into()), false);
    slash_commands.register_command(FakeSlashCommand("cmd-2".into()), false);
@@ -1429,9 +1418,8 @@ async fn test_random_context_collaboration(cx: &mut TestAppContext, mut rng: Std

 #[gpui::test]
 fn test_mark_cache_anchors(cx: &mut App) {
-    let settings_store = SettingsStore::test(cx);
-    LanguageModelRegistry::test(cx);
-    cx.set_global(settings_store);
+    init_test(cx);
+
    let registry = Arc::new(LanguageRegistry::test(cx.background_executor().clone()));
    let prompt_builder = Arc::new(PromptBuilder::new(None).unwrap());
    let context = cx.new(|cx| {
@@ -1606,6 +1594,16 @@ fn messages_cache(
        .collect()
 }

+fn init_test(cx: &mut App) {
+    let settings_store = SettingsStore::test(cx);
+    prompt_store::init(cx);
+    LanguageModelRegistry::test(cx);
+    cx.set_global(settings_store);
+    language::init(cx);
+    assistant_settings::init(cx);
+    Project::init_settings(cx);
+}
+
 #[derive(Clone)]
 struct FakeSlashCommand(String);

--- a/crates/assistant_context_editor/src/context_editor.rs
+++ b/crates/assistant_context_editor/src/context_editor.rs
@@ -18,7 +18,6 @@ use editor::{
    scroll::Autoscroll,
 };
 use editor::{FoldPlaceholder, display_map::CreaseId};
-use feature_flags::{Assistant2FeatureFlag, FeatureFlagAppExt as _};
 use fs::Fs;
 use futures::FutureExt;
 use gpui::{
@@ -43,8 +42,8 @@ use language_model_selector::{
 };
 use multi_buffer::MultiBufferRow;
 use picker::Picker;
-use project::lsp_store::LocalLspAdapterDelegate;
 use project::{Project, Worktree};
+use project::{ProjectPath, lsp_store::LocalLspAdapterDelegate};
 use rope::Point;
 use serde::{Deserialize, Serialize};
 use settings::{Settings, SettingsStore, update_settings_file};
@@ -100,7 +99,7 @@ actions!(

 #[derive(PartialEq, Clone)]
 pub enum InsertDraggedFiles {
-    ProjectPaths(Vec<PathBuf>),
+    ProjectPaths(Vec<ProjectPath>),
    ExternalFiles(Vec<PathBuf>),
 }

@@ -258,7 +257,7 @@ impl ContextEditor {

            let show_edit_predictions = all_language_settings(None, cx)
                .edit_predictions
-                .enabled_in_assistant;
+                .enabled_in_text_threads;

            editor.set_show_edit_predictions(Some(show_edit_predictions), window, cx);

@@ -333,7 +332,7 @@ impl ContextEditor {
        self.editor.update(cx, |editor, cx| {
            let show_edit_predictions = all_language_settings(None, cx)
                .edit_predictions
-                .enabled_in_assistant;
+                .enabled_in_text_threads;

            editor.set_show_edit_predictions(Some(show_edit_predictions), window, cx);
        });
@@ -1406,7 +1405,7 @@ impl ContextEditor {
                                None,
                            ),
                            Role::Assistant => {
-                                let base_label = Label::new("Assistant").color(Color::Info);
+                                let base_label = Label::new("Agent").color(Color::Info);
                                let mut spinner = None;
                                let mut note = None;
                                let animated_label = if llm_loading {
@@ -1468,7 +1467,7 @@ impl ContextEditor {
                                        Tooltip::with_meta(
                                            "Toggle message role",
                                            None,
-                                            "Available roles: You (User), Assistant, System",
+                                            "Available roles: You (User), Agent, System",
                                            window,
                                            cx,
                                        )
@@ -1725,7 +1724,7 @@ impl ContextEditor {
        );
    }

-    pub fn insert_dragged_files(
+    pub fn handle_insert_dragged_files(
        workspace: &mut Workspace,
        action: &InsertDraggedFiles,
        window: &mut Window,
@@ -1740,7 +1739,7 @@ impl ContextEditor {
            return;
        };

-        let project = workspace.project().clone();
+        let project = context_editor_view.read(cx).project.clone();

        let paths = match action {
            InsertDraggedFiles::ProjectPaths(paths) => Task::ready((paths.clone(), vec![])),
@@ -1751,22 +1750,17 @@ impl ContextEditor {
                    .map(|path| Workspace::project_path_for_path(project.clone(), &path, false, cx))
                    .collect::<Vec<_>>();

-                cx.spawn(async move |_, cx| {
+                cx.background_spawn(async move {
                    let mut paths = vec![];
                    let mut worktrees = vec![];

                    let opened_paths = futures::future::join_all(tasks).await;
-                    for (worktree, project_path) in opened_paths.into_iter().flatten() {
-                        let Ok(worktree_root_name) =
-                            worktree.read_with(cx, |worktree, _| worktree.root_name().to_string())
-                        else {
-                            continue;
-                        };

-                        let mut full_path = PathBuf::from(worktree_root_name.clone());
-                        full_path.push(&project_path.path);
-                        paths.push(full_path);
-                        worktrees.push(worktree);
+                    for entry in opened_paths {
+                        if let Some((worktree, project_path)) = entry.log_err() {
+                            worktrees.push(worktree);
+                            paths.push(project_path);
+                        }
                    }

                    (paths, worktrees)
@@ -1774,33 +1768,50 @@ impl ContextEditor {
            }
        };

-        window
-            .spawn(cx, async move |cx| {
+        context_editor_view.update(cx, |_, cx| {
+            cx.spawn_in(window, async move |this, cx| {
                let (paths, dragged_file_worktrees) = paths.await;
-                let cmd_name = FileSlashCommand.name();
-
-                context_editor_view
-                    .update_in(cx, |context_editor, window, cx| {
-                        let file_argument = paths
-                            .into_iter()
-                            .map(|path| path.to_string_lossy().to_string())
-                            .collect::<Vec<_>>()
-                            .join(" ");
-
-                        context_editor.editor.update(cx, |editor, cx| {
-                            editor.insert("\n", window, cx);
-                            editor.insert(&format!("/{} {}", cmd_name, file_argument), window, cx);
-                        });
-
-                        context_editor.confirm_command(&ConfirmCommand, window, cx);
-
-                        context_editor
-                            .dragged_file_worktrees
-                            .extend(dragged_file_worktrees);
-                    })
-                    .log_err();
+                this.update_in(cx, |this, window, cx| {
+                    this.insert_dragged_files(paths, dragged_file_worktrees, window, cx);
+                })
+                .ok();
            })
            .detach();
+        })
+    }
+
+    pub fn insert_dragged_files(
+        &mut self,
+        opened_paths: Vec<ProjectPath>,
+        added_worktrees: Vec<Entity<Worktree>>,
+        window: &mut Window,
+        cx: &mut Context<Self>,
+    ) {
+        let mut file_slash_command_args = vec![];
+        for project_path in opened_paths.into_iter() {
+            let Some(worktree) = self
+                .project
+                .read(cx)
+                .worktree_for_id(project_path.worktree_id, cx)
+            else {
+                continue;
+            };
+            let worktree_root_name = worktree.read(cx).root_name().to_string();
+            let mut full_path = PathBuf::from(worktree_root_name.clone());
+            full_path.push(&project_path.path);
+            file_slash_command_args.push(full_path.to_string_lossy().to_string());
+        }
+
+        let cmd_name = FileSlashCommand.name();
+
+        let file_argument = file_slash_command_args.join(" ");
+
+        self.editor.update(cx, |editor, cx| {
+            editor.insert("\n", window, cx);
+            editor.insert(&format!("/{} {}", cmd_name, file_argument), window, cx);
+        });
+        self.confirm_command(&ConfirmCommand, window, cx);
+        self.dragged_file_worktrees.extend(added_worktrees);
    }

    pub fn quote_selection(
@@ -2383,19 +2394,11 @@ impl ContextEditor {
                            .on_click({
                                let focus_handle = self.focus_handle(cx).clone();
                                move |_event, window, cx| {
-                                    if cx.has_flag::<Assistant2FeatureFlag>() {
-                                        focus_handle.dispatch_action(
-                                            &zed_actions::agent::OpenConfiguration,
-                                            window,
-                                            cx,
-                                        );
-                                    } else {
-                                        focus_handle.dispatch_action(
-                                            &zed_actions::assistant::ShowConfiguration,
-                                            window,
-                                            cx,
-                                        );
-                                    };
+                                    focus_handle.dispatch_action(
+                                        &zed_actions::agent::OpenConfiguration,
+                                        window,
+                                        cx,
+                                    );
                                }
                            }),
                    )
--- a/crates/assistant_context_editor/src/context_store.rs
+++ b/crates/assistant_context_editor/src/context_store.rs
@@ -7,15 +7,17 @@ use assistant_slash_command::{SlashCommandId, SlashCommandWorkingSet};
 use client::{Client, TypedEnvelope, proto, telemetry::Telemetry};
 use clock::ReplicaId;
 use collections::HashMap;
-use context_server::ContextServerDescriptorRegistry;
-use context_server::manager::{ContextServerManager, ContextServerStatus};
+use context_server::ContextServerId;
 use fs::{Fs, RemoveOptions};
 use futures::StreamExt;
 use fuzzy::StringMatchCandidate;
 use gpui::{App, AppContext as _, AsyncApp, Context, Entity, EventEmitter, Task, WeakEntity};
 use language::LanguageRegistry;
 use paths::contexts_dir;
-use project::Project;
+use project::{
+    Project,
+    context_server_store::{ContextServerStatus, ContextServerStore},
+};
 use prompt_store::PromptBuilder;
 use regex::Regex;
 use rpc::AnyProtoClient;
@@ -40,8 +42,7 @@ pub struct RemoteContextMetadata {
 pub struct ContextStore {
    contexts: Vec<ContextHandle>,
    contexts_metadata: Vec<SavedContextMetadata>,
-    context_server_manager: Entity<ContextServerManager>,
-    context_server_slash_command_ids: HashMap<Arc<str>, Vec<SlashCommandId>>,
+    context_server_slash_command_ids: HashMap<ContextServerId, Vec<SlashCommandId>>,
    host_contexts: Vec<RemoteContextMetadata>,
    fs: Arc<dyn Fs>,
    languages: Arc<LanguageRegistry>,
@@ -98,15 +99,9 @@ impl ContextStore {
            let (mut events, _) = fs.watch(contexts_dir(), CONTEXT_WATCH_DURATION).await;

            let this = cx.new(|cx: &mut Context<Self>| {
-                let context_server_factory_registry =
-                    ContextServerDescriptorRegistry::default_global(cx);
-                let context_server_manager = cx.new(|cx| {
-                    ContextServerManager::new(context_server_factory_registry, project.clone(), cx)
-                });
                let mut this = Self {
                    contexts: Vec::new(),
                    contexts_metadata: Vec::new(),
-                    context_server_manager,
                    context_server_slash_command_ids: HashMap::default(),
                    host_contexts: Vec::new(),
                    fs,
@@ -344,7 +339,11 @@ impl ContextStore {
        }
    }

-    pub fn contexts(&self) -> Vec<SavedContextMetadata> {
+    pub fn unordered_contexts(&self) -> impl Iterator<Item = &SavedContextMetadata> {
+        self.contexts_metadata.iter()
+    }
+
+    pub fn reverse_chronological_contexts(&self) -> Vec<SavedContextMetadata> {
        let mut contexts = self.contexts_metadata.iter().cloned().collect::<Vec<_>>();
        contexts.sort_unstable_by_key(|thread| std::cmp::Reverse(thread.mtime));
        contexts
@@ -802,22 +801,9 @@ impl ContextStore {
        })
    }

-    pub fn restart_context_servers(&mut self, cx: &mut Context<Self>) {
-        cx.update_entity(
-            &self.context_server_manager,
-            |context_server_manager, cx| {
-                for server in context_server_manager.running_servers() {
-                    context_server_manager
-                        .restart_server(&server.id(), cx)
-                        .detach_and_log_err(cx);
-                }
-            },
-        );
-    }
-
    fn register_context_server_handlers(&self, cx: &mut Context<Self>) {
        cx.subscribe(
-            &self.context_server_manager.clone(),
+            &self.project.read(cx).context_server_store(),
            Self::handle_context_server_event,
        )
        .detach();
@@ -825,16 +811,18 @@ impl ContextStore {

    fn handle_context_server_event(
        &mut self,
-        context_server_manager: Entity<ContextServerManager>,
-        event: &context_server::manager::Event,
+        context_server_manager: Entity<ContextServerStore>,
+        event: &project::context_server_store::Event,
        cx: &mut Context<Self>,
    ) {
        let slash_command_working_set = self.slash_commands.clone();
        match event {
-            context_server::manager::Event::ServerStatusChanged { server_id, status } => {
+            project::context_server_store::Event::ServerStatusChanged { server_id, status } => {
                match status {
-                    Some(ContextServerStatus::Running) => {
-                        if let Some(server) = context_server_manager.read(cx).get_server(server_id)
+                    ContextServerStatus::Running => {
+                        if let Some(server) = context_server_manager
+                            .read(cx)
+                            .get_running_server(server_id)
                        {
                            let context_server_manager = context_server_manager.clone();
                            cx.spawn({
@@ -858,7 +846,7 @@ impl ContextStore {
                                                    slash_command_working_set.insert(Arc::new(
                                                        assistant_slash_commands::ContextServerSlashCommand::new(
                                                            context_server_manager.clone(),
-                                                            &server,
+                                                            server.id(),
                                                            prompt,
                                                        ),
                                                    ))
@@ -877,7 +865,7 @@ impl ContextStore {
                            .detach();
                        }
                    }
-                    None => {
+                    ContextServerStatus::Stopped | ContextServerStatus::Error(_) => {
                        if let Some(slash_command_ids) =
                            self.context_server_slash_command_ids.remove(server_id)
                        {
--- a/crates/assistant_settings/Cargo.toml
+++ b/crates/assistant_settings/Cargo.toml
@@ -14,7 +14,7 @@ path = "src/assistant_settings.rs"
 [dependencies]
 anthropic = { workspace = true, features = ["schemars"] }
 anyhow.workspace = true
-feature_flags.workspace = true
+collections.workspace = true
 gpui.workspace = true
 indexmap.workspace = true
 language_model.workspace = true
@@ -27,10 +27,12 @@ schemars.workspace = true
 serde.workspace = true
 settings.workspace = true
 workspace-hack.workspace = true
+zed_llm_client.workspace = true

 [dev-dependencies]
 fs.workspace = true
 gpui = { workspace = true, features = ["test-support"] }
 paths.workspace = true
 serde_json_lenient.workspace = true
+serde_json.workspace = true
 settings = { workspace = true, features = ["test-support"] }
--- a/crates/assistant_settings/src/agent_profile.rs
+++ b/crates/assistant_settings/src/agent_profile.rs
@@ -1,7 +1,7 @@
 use std::sync::Arc;

+use collections::IndexMap;
 use gpui::SharedString;
-use indexmap::IndexMap;
 use schemars::JsonSchema;
 use serde::{Deserialize, Serialize};

@@ -10,10 +10,10 @@ pub mod builtin_profiles {

    pub const WRITE: &str = "write";
    pub const ASK: &str = "ask";
-    pub const MANUAL: &str = "manual";
+    pub const MINIMAL: &str = "minimal";

    pub fn is_builtin(profile_id: &AgentProfileId) -> bool {
-        profile_id.as_str() == WRITE || profile_id.as_str() == ASK || profile_id.as_str() == MANUAL
+        profile_id.as_str() == WRITE || profile_id.as_str() == ASK || profile_id.as_str() == MINIMAL
    }
 }

--- a/crates/assistant_settings/src/assistant_settings.rs
+++ b/crates/assistant_settings/src/assistant_settings.rs
@@ -5,10 +5,9 @@ use std::sync::Arc;
 use ::open_ai::Model as OpenAiModel;
 use anthropic::Model as AnthropicModel;
 use anyhow::{Result, bail};
+use collections::IndexMap;
 use deepseek::Model as DeepseekModel;
-use feature_flags::{AgentStreamEditsFeatureFlag, Assistant2FeatureFlag, FeatureFlagAppExt};
-use gpui::{App, Pixels};
-use indexmap::IndexMap;
+use gpui::{App, Pixels, SharedString};
 use language_model::{CloudModel, LanguageModel};
 use lmstudio::Model as LmStudioModel;
 use ollama::Model as OllamaModel;
@@ -18,6 +17,10 @@ use settings::{Settings, SettingsSources};

 pub use crate::agent_profile::*;

+pub fn init(cx: &mut App) {
+    AssistantSettings::register(cx);
+}
+
 #[derive(Copy, Clone, Default, Debug, Serialize, Deserialize, JsonSchema)]
 #[serde(rename_all = "snake_case")]
 pub enum AssistantDockPosition {
@@ -89,31 +92,66 @@ pub struct AssistantSettings {
    pub notify_when_agent_waiting: NotifyWhenAgentWaiting,
    pub stream_edits: bool,
    pub single_file_review: bool,
+    pub model_parameters: Vec<LanguageModelParameters>,
+    pub preferred_completion_mode: CompletionMode,
 }

 impl AssistantSettings {
-    pub fn stream_edits(&self, cx: &App) -> bool {
-        cx.has_flag::<AgentStreamEditsFeatureFlag>() || self.stream_edits
+    pub fn temperature_for_model(model: &Arc<dyn LanguageModel>, cx: &App) -> Option<f32> {
+        let settings = Self::get_global(cx);
+        settings
+            .model_parameters
+            .iter()
+            .rfind(|setting| setting.matches(model))
+            .and_then(|m| m.temperature)
    }

-    pub fn are_live_diffs_enabled(&self, cx: &App) -> bool {
-        if cx.has_flag::<Assistant2FeatureFlag>() {
-            return false;
-        }
-
-        cx.is_staff() || self.enable_experimental_live_diffs
+    pub fn are_live_diffs_enabled(&self, _cx: &App) -> bool {
+        false
    }

    pub fn set_inline_assistant_model(&mut self, provider: String, model: String) {
-        self.inline_assistant_model = Some(LanguageModelSelection { provider, model });
+        self.inline_assistant_model = Some(LanguageModelSelection {
+            provider: provider.into(),
+            model,
+        });
    }

    pub fn set_commit_message_model(&mut self, provider: String, model: String) {
-        self.commit_message_model = Some(LanguageModelSelection { provider, model });
+        self.commit_message_model = Some(LanguageModelSelection {
+            provider: provider.into(),
+            model,
+        });
    }

    pub fn set_thread_summary_model(&mut self, provider: String, model: String) {
-        self.thread_summary_model = Some(LanguageModelSelection { provider, model });
+        self.thread_summary_model = Some(LanguageModelSelection {
+            provider: provider.into(),
+            model,
+        });
+    }
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize, JsonSchema, PartialEq)]
+pub struct LanguageModelParameters {
+    pub provider: Option<LanguageModelProviderSetting>,
+    pub model: Option<SharedString>,
+    pub temperature: Option<f32>,
+}
+
+impl LanguageModelParameters {
+    pub fn matches(&self, model: &Arc<dyn LanguageModel>) -> bool {
+        if let Some(provider) = &self.provider {
+            if provider.0 != model.provider_id().0 {
+                return false;
+            }
+        }
+        if let Some(setting_model) = &self.model {
+            if *setting_model != model.id().0 {
+                return false;
+            }
+        }
+        true
    }
 }

@@ -180,37 +218,37 @@ impl AssistantSettingsContent {
                        .and_then(|provider| match provider {
                            AssistantProviderContentV1::ZedDotDev { default_model } => {
                                default_model.map(|model| LanguageModelSelection {
-                                    provider: "zed.dev".to_string(),
+                                    provider: "zed.dev".into(),
                                    model: model.id().to_string(),
                                })
                            }
                            AssistantProviderContentV1::OpenAi { default_model, .. } => {
                                default_model.map(|model| LanguageModelSelection {
-                                    provider: "openai".to_string(),
+                                    provider: "openai".into(),
                                    model: model.id().to_string(),
                                })
                            }
                            AssistantProviderContentV1::Anthropic { default_model, .. } => {
                                default_model.map(|model| LanguageModelSelection {
-                                    provider: "anthropic".to_string(),
+                                    provider: "anthropic".into(),
                                    model: model.id().to_string(),
                                })
                            }
                            AssistantProviderContentV1::Ollama { default_model, .. } => {
                                default_model.map(|model| LanguageModelSelection {
-                                    provider: "ollama".to_string(),
+                                    provider: "ollama".into(),
                                    model: model.id().to_string(),
                                })
                            }
                            AssistantProviderContentV1::LmStudio { default_model, .. } => {
                                default_model.map(|model| LanguageModelSelection {
-                                    provider: "lmstudio".to_string(),
+                                    provider: "lmstudio".into(),
                                    model: model.id().to_string(),
                                })
                            }
                            AssistantProviderContentV1::DeepSeek { default_model, .. } => {
                                default_model.map(|model| LanguageModelSelection {
-                                    provider: "deepseek".to_string(),
+                                    provider: "deepseek".into(),
                                    model: model.id().to_string(),
                                })
                            }
@@ -226,6 +264,8 @@ impl AssistantSettingsContent {
                    notify_when_agent_waiting: None,
                    stream_edits: None,
                    single_file_review: None,
+                    model_parameters: Vec::new(),
+                    preferred_completion_mode: None,
                },
                VersionedAssistantSettingsContent::V2(ref settings) => settings.clone(),
            },
@@ -236,7 +276,7 @@ impl AssistantSettingsContent {
                default_width: settings.default_width,
                default_height: settings.default_height,
                default_model: Some(LanguageModelSelection {
-                    provider: "openai".to_string(),
+                    provider: "openai".into(),
                    model: settings
                        .default_open_ai_model
                        .clone()
@@ -255,6 +295,8 @@ impl AssistantSettingsContent {
                notify_when_agent_waiting: None,
                stream_edits: None,
                single_file_review: None,
+                model_parameters: Vec::new(),
+                preferred_completion_mode: None,
            },
            None => AssistantSettingsContentV2::default(),
        }
@@ -315,7 +357,12 @@ impl AssistantSettingsContent {
                                _ => None,
                            };
                            settings.provider = Some(AssistantProviderContentV1::Ollama {
-                                default_model: Some(ollama::Model::new(&model, None, None)),
+                                default_model: Some(ollama::Model::new(
+                                    &model,
+                                    None,
+                                    None,
+                                    Some(language_model.supports_tools()),
+                                )),
                                api_url,
                            });
                        }
@@ -362,7 +409,10 @@ impl AssistantSettingsContent {
                    }
                }
                VersionedAssistantSettingsContent::V2(ref mut settings) => {
-                    settings.default_model = Some(LanguageModelSelection { provider, model });
+                    settings.default_model = Some(LanguageModelSelection {
+                        provider: provider.into(),
+                        model,
+                    });
                }
            },
            Some(AssistantSettingsContentInner::Legacy(settings)) => {
@@ -373,7 +423,10 @@ impl AssistantSettingsContent {
            None => {
                self.inner = Some(AssistantSettingsContentInner::for_v2(
                    AssistantSettingsContentV2 {
-                        default_model: Some(LanguageModelSelection { provider, model }),
+                        default_model: Some(LanguageModelSelection {
+                            provider: provider.into(),
+                            model,
+                        }),
                        ..Default::default()
                    },
                ));
@@ -383,7 +436,10 @@ impl AssistantSettingsContent {

    pub fn set_inline_assistant_model(&mut self, provider: String, model: String) {
        self.v2_setting(|setting| {
-            setting.inline_assistant_model = Some(LanguageModelSelection { provider, model });
+            setting.inline_assistant_model = Some(LanguageModelSelection {
+                provider: provider.into(),
+                model,
+            });
            Ok(())
        })
        .ok();
@@ -391,7 +447,10 @@ impl AssistantSettingsContent {

    pub fn set_commit_message_model(&mut self, provider: String, model: String) {
        self.v2_setting(|setting| {
-            setting.commit_message_model = Some(LanguageModelSelection { provider, model });
+            setting.commit_message_model = Some(LanguageModelSelection {
+                provider: provider.into(),
+                model,
+            });
            Ok(())
        })
        .ok();
@@ -419,7 +478,10 @@ impl AssistantSettingsContent {

    pub fn set_thread_summary_model(&mut self, provider: String, model: String) {
        self.v2_setting(|setting| {
-            setting.thread_summary_model = Some(LanguageModelSelection { provider, model });
+            setting.thread_summary_model = Some(LanguageModelSelection {
+                provider: provider.into(),
+                model,
+            });
            Ok(())
        })
        .ok();
@@ -515,6 +577,8 @@ impl Default for VersionedAssistantSettingsContent {
            notify_when_agent_waiting: None,
            stream_edits: None,
            single_file_review: None,
+            model_parameters: Vec::new(),
+            preferred_completion_mode: None,
        })
    }
 }
@@ -578,37 +642,88 @@ pub struct AssistantSettingsContentV2 {
    ///
    /// Default: true
    single_file_review: Option<bool>,
+    /// Additional parameters for language model requests. When making a request
+    /// to a model, parameters will be taken from the last entry in this list
+    /// that matches the model's provider and name. In each entry, both provider
+    /// and model are optional, so that you can specify parameters for either
+    /// one.
+    ///
+    /// Default: []
+    #[serde(default)]
+    model_parameters: Vec<LanguageModelParameters>,
+
+    /// What completion mode to enable for new threads
+    ///
+    /// Default: normal
+    preferred_completion_mode: Option<CompletionMode>,
+}
+
+#[derive(Clone, Copy, Debug, Serialize, Deserialize, JsonSchema, PartialEq, Default)]
+#[serde(rename_all = "snake_case")]
+pub enum CompletionMode {
+    #[default]
+    Normal,
+    Max,
+}
+
+impl From<CompletionMode> for zed_llm_client::CompletionMode {
+    fn from(value: CompletionMode) -> Self {
+        match value {
+            CompletionMode::Normal => zed_llm_client::CompletionMode::Normal,
+            CompletionMode::Max => zed_llm_client::CompletionMode::Max,
+        }
+    }
 }

 #[derive(Clone, Debug, Serialize, Deserialize, JsonSchema, PartialEq)]
 pub struct LanguageModelSelection {
-    #[schemars(schema_with = "providers_schema")]
-    pub provider: String,
+    pub provider: LanguageModelProviderSetting,
    pub model: String,
 }

-fn providers_schema(_: &mut schemars::r#gen::SchemaGenerator) -> schemars::schema::Schema {
-    schemars::schema::SchemaObject {
-        enum_values: Some(vec![
-            "anthropic".into(),
-            "bedrock".into(),
-            "google".into(),
-            "lmstudio".into(),
-            "ollama".into(),
-            "openai".into(),
-            "zed.dev".into(),
-            "copilot_chat".into(),
-            "deepseek".into(),
-        ]),
-        ..Default::default()
+#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
+pub struct LanguageModelProviderSetting(pub String);
+
+impl JsonSchema for LanguageModelProviderSetting {
+    fn schema_name() -> String {
+        "LanguageModelProviderSetting".into()
+    }
+
+    fn json_schema(_: &mut schemars::r#gen::SchemaGenerator) -> Schema {
+        schemars::schema::SchemaObject {
+            enum_values: Some(vec![
+                "anthropic".into(),
+                "bedrock".into(),
+                "google".into(),
+                "lmstudio".into(),
+                "ollama".into(),
+                "openai".into(),
+                "zed.dev".into(),
+                "copilot_chat".into(),
+                "deepseek".into(),
+            ]),
+            ..Default::default()
+        }
+        .into()
+    }
+}
+
+impl From<String> for LanguageModelProviderSetting {
+    fn from(provider: String) -> Self {
+        Self(provider)
+    }
+}
+
+impl From<&str> for LanguageModelProviderSetting {
+    fn from(provider: &str) -> Self {
+        Self(provider.to_string())
    }
-    .into()
 }

 impl Default for LanguageModelSelection {
    fn default() -> Self {
        Self {
-            provider: "openai".to_string(),
+            provider: LanguageModelProviderSetting("openai".to_string()),
            model: "gpt-4".to_string(),
        }
    }
@@ -688,7 +803,9 @@ pub struct LegacyAssistantSettingsContent {
 }

 impl Settings for AssistantSettings {
-    const KEY: Option<&'static str> = Some("assistant");
+    const KEY: Option<&'static str> = Some("agent");
+
+    const FALLBACK_KEY: Option<&'static str> = Some("assistant");

    const PRESERVED_KEYS: Option<&'static [&'static str]> = Some(&["version"]);

@@ -743,6 +860,14 @@ impl Settings for AssistantSettings {
            merge(&mut settings.stream_edits, value.stream_edits);
            merge(&mut settings.single_file_review, value.single_file_review);
            merge(&mut settings.default_profile, value.default_profile);
+            merge(
+                &mut settings.preferred_completion_mode,
+                value.preferred_completion_mode,
+            );
+
+            settings
+                .model_parameters
+                .extend_from_slice(&value.model_parameters);

            if let Some(profiles) = value.profiles {
                settings
@@ -821,6 +946,7 @@ fn merge<T>(target: &mut T, value: Option<T>) {
 mod tests {
    use fs::Fs;
    use gpui::{ReadGlobal, TestAppContext};
+    use settings::SettingsStore;

    use super::*;

@@ -875,6 +1001,8 @@ mod tests {
                                notify_when_agent_waiting: None,
                                stream_edits: None,
                                single_file_review: None,
+                                model_parameters: Vec::new(),
+                                preferred_completion_mode: None,
                            },
                        )),
                    }
@@ -889,12 +1017,75 @@ mod tests {

        #[derive(Debug, Deserialize)]
        struct AssistantSettingsTest {
-            assistant: AssistantSettingsContent,
+            agent: AssistantSettingsContent,
        }

        let assistant_settings: AssistantSettingsTest =
            serde_json_lenient::from_str(&raw_settings_value).unwrap();

-        assert!(!assistant_settings.assistant.is_version_outdated());
+        assert!(!assistant_settings.agent.is_version_outdated());
+    }
+
+    #[gpui::test]
+    async fn test_load_settings_from_old_key(cx: &mut TestAppContext) {
+        let fs = fs::FakeFs::new(cx.executor().clone());
+        fs.create_dir(paths::settings_file().parent().unwrap())
+            .await
+            .unwrap();
+
+        cx.update(|cx| {
+            let mut test_settings = settings::SettingsStore::test(cx);
+            let user_settings_content = r#"{
+            "assistant": {
+                "enabled": true,
+                "version": "2",
+                "default_model": {
+                  "provider": "zed.dev",
+                  "model": "gpt-99"
+                },
+            }}"#;
+            test_settings
+                .set_user_settings(user_settings_content, cx)
+                .unwrap();
+            cx.set_global(test_settings);
+            AssistantSettings::register(cx);
+        });
+
+        cx.run_until_parked();
+
+        let assistant_settings = cx.update(|cx| AssistantSettings::get_global(cx).clone());
+        assert!(assistant_settings.enabled);
+        assert!(!assistant_settings.using_outdated_settings_version);
+        assert_eq!(assistant_settings.default_model.model, "gpt-99");
+
+        cx.update_global::<SettingsStore, _>(|settings_store, cx| {
+            settings_store.update_user_settings::<AssistantSettings>(cx, |settings| {
+                *settings = AssistantSettingsContent {
+                    inner: Some(AssistantSettingsContentInner::for_v2(
+                        AssistantSettingsContentV2 {
+                            enabled: Some(false),
+                            default_model: Some(LanguageModelSelection {
+                                provider: "xai".to_owned().into(),
+                                model: "grok".to_owned(),
+                            }),
+                            ..Default::default()
+                        },
+                    )),
+                };
+            });
+        });
+
+        cx.run_until_parked();
+
+        let settings = cx.update(|cx| SettingsStore::global(cx).raw_user_settings().clone());
+
+        #[derive(Debug, Deserialize)]
+        struct AssistantSettingsTest {
+            assistant: AssistantSettingsContent,
+            agent: Option<serde_json_lenient::Value>,
+        }
+
+        let assistant_settings: AssistantSettingsTest = serde_json::from_value(settings).unwrap();
+        assert!(assistant_settings.agent.is_none());
    }
 }
--- a/crates/assistant_slash_commands/src/context_server_command.rs
+++ b/crates/assistant_slash_commands/src/context_server_command.rs
@@ -4,12 +4,10 @@ use assistant_slash_command::{
    SlashCommandOutputSection, SlashCommandResult,
 };
 use collections::HashMap;
-use context_server::{
-    manager::{ContextServer, ContextServerManager},
-    types::Prompt,
-};
+use context_server::{ContextServerId, types::Prompt};
 use gpui::{App, Entity, Task, WeakEntity, Window};
 use language::{BufferSnapshot, CodeLabel, LspAdapterDelegate};
+use project::context_server_store::ContextServerStore;
 use std::sync::Arc;
 use std::sync::atomic::AtomicBool;
 use text::LineEnding;
@@ -19,21 +17,17 @@ use workspace::Workspace;
 use crate::create_label_for_command;

 pub struct ContextServerSlashCommand {
-    server_manager: Entity<ContextServerManager>,
-    server_id: Arc<str>,
+    store: Entity<ContextServerStore>,
+    server_id: ContextServerId,
    prompt: Prompt,
 }

 impl ContextServerSlashCommand {
-    pub fn new(
-        server_manager: Entity<ContextServerManager>,
-        server: &Arc<ContextServer>,
-        prompt: Prompt,
-    ) -> Self {
+    pub fn new(store: Entity<ContextServerStore>, id: ContextServerId, prompt: Prompt) -> Self {
        Self {
-            server_id: server.id(),
+            server_id: id,
            prompt,
-            server_manager,
+            store,
        }
    }
 }
@@ -88,7 +82,7 @@ impl SlashCommand for ContextServerSlashCommand {
        let server_id = self.server_id.clone();
        let prompt_name = self.prompt.name.clone();

-        if let Some(server) = self.server_manager.read(cx).get_server(&server_id) {
+        if let Some(server) = self.store.read(cx).get_running_server(&server_id) {
            cx.foreground_executor().spawn(async move {
                let Some(protocol) = server.client() else {
                    return Err(anyhow!("Context server not initialized"));
@@ -142,8 +136,8 @@ impl SlashCommand for ContextServerSlashCommand {
            Err(e) => return Task::ready(Err(e)),
        };

-        let manager = self.server_manager.read(cx);
-        if let Some(server) = manager.get_server(&server_id) {
+        let store = self.store.read(cx);
+        if let Some(server) = store.get_running_server(&server_id) {
            cx.foreground_executor().spawn(async move {
                let Some(protocol) = server.client() else {
                    return Err(anyhow!("Context server not initialized"));
--- a/crates/assistant_slash_commands/src/fetch_command.rs
+++ b/crates/assistant_slash_commands/src/fetch_command.rs
@@ -55,11 +55,14 @@ impl FetchSlashCommand {
        let content_type = content_type
            .to_str()
            .context("invalid Content-Type header")?;
-        let content_type = match content_type {
-            "text/html" => ContentType::Html,
-            "text/plain" => ContentType::Plaintext,
-            "application/json" => ContentType::Json,
-            _ => ContentType::Html,
+        let content_type = if content_type.starts_with("text/html") {
+            ContentType::Html
+        } else if content_type.starts_with("text/plain") {
+            ContentType::Plaintext
+        } else if content_type.starts_with("application/json") {
+            ContentType::Json
+        } else {
+            ContentType::Html
        };

        match content_type {
--- a/crates/assistant_tool/src/action_log.rs
+++ b/crates/assistant_tool/src/action_log.rs
@@ -46,6 +46,7 @@ impl ActionLog {
    fn track_buffer_internal(
        &mut self,
        buffer: Entity<Buffer>,
+        is_created: bool,
        cx: &mut Context<Self>,
    ) -> &mut TrackedBuffer {
        let tracked_buffer = self
@@ -62,13 +63,21 @@ impl ActionLog {
                let base_text;
                let status;
                let unreviewed_changes;
-                if buffer
-                    .read(cx)
-                    .file()
-                    .map_or(true, |file| !file.disk_state().exists())
-                {
+                if is_created {
+                    let existing_file_content = if buffer
+                        .read(cx)
+                        .file()
+                        .map_or(false, |file| file.disk_state().exists())
+                    {
+                        Some(text_snapshot.as_rope().clone())
+                    } else {
+                        None
+                    };
+
                    base_text = Rope::default();
-                    status = TrackedBufferStatus::Created;
+                    status = TrackedBufferStatus::Created {
+                        existing_file_content,
+                    };
                    unreviewed_changes = Patch::new(vec![Edit {
                        old: 0..1,
                        new: 0..text_snapshot.max_point().row + 1,
@@ -131,7 +140,7 @@ impl ActionLog {
        };

        match tracked_buffer.status {
-            TrackedBufferStatus::Created | TrackedBufferStatus::Modified => {
+            TrackedBufferStatus::Created { .. } | TrackedBufferStatus::Modified => {
                if buffer
                    .read(cx)
                    .file()
@@ -153,7 +162,7 @@ impl ActionLog {
                    // resurrected externally, we want to clear the changes we
                    // were tracking and reset the buffer's state.
                    self.tracked_buffers.remove(&buffer);
-                    self.track_buffer_internal(buffer, cx);
+                    self.track_buffer_internal(buffer, false, cx);
                }
                cx.notify();
            }
@@ -267,15 +276,22 @@ impl ActionLog {
    }

    /// Track a buffer as read, so we can notify the model about user edits.
-    pub fn track_buffer(&mut self, buffer: Entity<Buffer>, cx: &mut Context<Self>) {
-        self.track_buffer_internal(buffer, cx);
+    pub fn buffer_read(&mut self, buffer: Entity<Buffer>, cx: &mut Context<Self>) {
+        self.track_buffer_internal(buffer, false, cx);
+    }
+
+    /// Mark a buffer as edited, so we can refresh it in the context
+    pub fn buffer_created(&mut self, buffer: Entity<Buffer>, cx: &mut Context<Self>) {
+        self.edited_since_project_diagnostics_check = true;
+        self.tracked_buffers.remove(&buffer);
+        self.track_buffer_internal(buffer.clone(), true, cx);
    }

    /// Mark a buffer as edited, so we can refresh it in the context
    pub fn buffer_edited(&mut self, buffer: Entity<Buffer>, cx: &mut Context<Self>) {
        self.edited_since_project_diagnostics_check = true;

-        let tracked_buffer = self.track_buffer_internal(buffer.clone(), cx);
+        let tracked_buffer = self.track_buffer_internal(buffer.clone(), false, cx);
        if let TrackedBufferStatus::Deleted = tracked_buffer.status {
            tracked_buffer.status = TrackedBufferStatus::Modified;
        }
@@ -283,9 +299,9 @@ impl ActionLog {
    }

    pub fn will_delete_buffer(&mut self, buffer: Entity<Buffer>, cx: &mut Context<Self>) {
-        let tracked_buffer = self.track_buffer_internal(buffer.clone(), cx);
+        let tracked_buffer = self.track_buffer_internal(buffer.clone(), false, cx);
        match tracked_buffer.status {
-            TrackedBufferStatus::Created => {
+            TrackedBufferStatus::Created { .. } => {
                self.tracked_buffers.remove(&buffer);
                cx.notify();
            }
@@ -369,19 +385,35 @@ impl ActionLog {
            return Task::ready(Ok(()));
        };

-        match tracked_buffer.status {
-            TrackedBufferStatus::Created => {
-                let delete = buffer
-                    .read(cx)
-                    .entry_id(cx)
-                    .and_then(|entry_id| {
-                        self.project
-                            .update(cx, |project, cx| project.delete_entry(entry_id, false, cx))
-                    })
-                    .unwrap_or(Task::ready(Ok(())));
+        match &tracked_buffer.status {
+            TrackedBufferStatus::Created {
+                existing_file_content,
+            } => {
+                let task = if let Some(existing_file_content) = existing_file_content {
+                    buffer.update(cx, |buffer, cx| {
+                        buffer.start_transaction();
+                        buffer.set_text("", cx);
+                        for chunk in existing_file_content.chunks() {
+                            buffer.append(chunk, cx);
+                        }
+                        buffer.end_transaction(cx);
+                    });
+                    self.project
+                        .update(cx, |project, cx| project.save_buffer(buffer.clone(), cx))
+                } else {
+                    buffer
+                        .read(cx)
+                        .entry_id(cx)
+                        .and_then(|entry_id| {
+                            self.project
+                                .update(cx, |project, cx| project.delete_entry(entry_id, false, cx))
+                        })
+                        .unwrap_or(Task::ready(Ok(())))
+                };
+
                self.tracked_buffers.remove(&buffer);
                cx.notify();
-                delete
+                task
            }
            TrackedBufferStatus::Deleted => {
                buffer.update(cx, |buffer, cx| {
@@ -393,7 +425,7 @@ impl ActionLog {

                // Clear all tracked changes for this buffer and start over as if we just read it.
                self.tracked_buffers.remove(&buffer);
-                self.track_buffer_internal(buffer.clone(), cx);
+                self.buffer_read(buffer.clone(), cx);
                cx.notify();
                save
            }
@@ -615,9 +647,8 @@ enum ChangeAuthor {
    Agent,
 }

-#[derive(Copy, Clone, Eq, PartialEq)]
 enum TrackedBufferStatus {
-    Created,
+    Created { existing_file_content: Option<Rope> },
    Modified,
    Deleted,
 }
@@ -704,7 +735,7 @@ mod tests {
            .unwrap();

        cx.update(|cx| {
-            action_log.update(cx, |log, cx| log.track_buffer(buffer.clone(), cx));
+            action_log.update(cx, |log, cx| log.buffer_read(buffer.clone(), cx));
            buffer.update(cx, |buffer, cx| {
                buffer
                    .edit([(Point::new(1, 1)..Point::new(1, 2), "E")], None, cx)
@@ -785,7 +816,7 @@ mod tests {
            .unwrap();

        cx.update(|cx| {
-            action_log.update(cx, |log, cx| log.track_buffer(buffer.clone(), cx));
+            action_log.update(cx, |log, cx| log.buffer_read(buffer.clone(), cx));
            buffer.update(cx, |buffer, cx| {
                buffer
                    .edit([(Point::new(1, 0)..Point::new(2, 0), "")], None, cx)
@@ -867,7 +898,7 @@ mod tests {
            .unwrap();

        cx.update(|cx| {
-            action_log.update(cx, |log, cx| log.track_buffer(buffer.clone(), cx));
+            action_log.update(cx, |log, cx| log.buffer_read(buffer.clone(), cx));
            buffer.update(cx, |buffer, cx| {
                buffer
                    .edit([(Point::new(1, 2)..Point::new(2, 3), "F\nGHI")], None, cx)
@@ -963,7 +994,7 @@ mod tests {
            .await
            .unwrap();
        cx.update(|cx| {
-            action_log.update(cx, |log, cx| log.track_buffer(buffer.clone(), cx));
+            action_log.update(cx, |log, cx| log.buffer_created(buffer.clone(), cx));
            buffer.update(cx, |buffer, cx| buffer.set_text("lorem", cx));
            action_log.update(cx, |log, cx| log.buffer_edited(buffer.clone(), cx));
        });
@@ -1005,6 +1036,64 @@ mod tests {
        assert_eq!(unreviewed_hunks(&action_log, cx), vec![]);
    }

+    #[gpui::test(iterations = 10)]
+    async fn test_overwriting_files(cx: &mut TestAppContext) {
+        init_test(cx);
+
+        let fs = FakeFs::new(cx.executor());
+        fs.insert_tree(
+            path!("/dir"),
+            json!({
+                "file1": "Lorem ipsum dolor"
+            }),
+        )
+        .await;
+        let project = Project::test(fs.clone(), [path!("/dir").as_ref()], cx).await;
+        let action_log = cx.new(|_| ActionLog::new(project.clone()));
+        let file_path = project
+            .read_with(cx, |project, cx| project.find_project_path("dir/file1", cx))
+            .unwrap();
+
+        let buffer = project
+            .update(cx, |project, cx| project.open_buffer(file_path, cx))
+            .await
+            .unwrap();
+        cx.update(|cx| {
+            action_log.update(cx, |log, cx| log.buffer_created(buffer.clone(), cx));
+            buffer.update(cx, |buffer, cx| buffer.set_text("sit amet consecteur", cx));
+            action_log.update(cx, |log, cx| log.buffer_edited(buffer.clone(), cx));
+        });
+        project
+            .update(cx, |project, cx| project.save_buffer(buffer.clone(), cx))
+            .await
+            .unwrap();
+        cx.run_until_parked();
+        assert_eq!(
+            unreviewed_hunks(&action_log, cx),
+            vec![(
+                buffer.clone(),
+                vec![HunkStatus {
+                    range: Point::new(0, 0)..Point::new(0, 19),
+                    diff_status: DiffHunkStatusKind::Added,
+                    old_text: "".into(),
+                }],
+            )]
+        );
+
+        action_log
+            .update(cx, |log, cx| {
+                log.reject_edits_in_ranges(buffer.clone(), vec![2..5], cx)
+            })
+            .await
+            .unwrap();
+        cx.run_until_parked();
+        assert_eq!(unreviewed_hunks(&action_log, cx), vec![]);
+        assert_eq!(
+            buffer.read_with(cx, |buffer, _cx| buffer.text()),
+            "Lorem ipsum dolor"
+        );
+    }
+
    #[gpui::test(iterations = 10)]
    async fn test_deleting_files(cx: &mut TestAppContext) {
        init_test(cx);
@@ -1086,7 +1175,7 @@ mod tests {
            .update(cx, |project, cx| project.open_buffer(file2_path, cx))
            .await
            .unwrap();
-        action_log.update(cx, |log, cx| log.track_buffer(buffer2.clone(), cx));
+        action_log.update(cx, |log, cx| log.buffer_created(buffer2.clone(), cx));
        buffer2.update(cx, |buffer, cx| buffer.set_text("IPSUM", cx));
        action_log.update(cx, |log, cx| log.buffer_edited(buffer2.clone(), cx));
        project
@@ -1101,8 +1190,8 @@ mod tests {
                buffer2.clone(),
                vec![HunkStatus {
                    range: Point::new(0, 0)..Point::new(0, 5),
-                    diff_status: DiffHunkStatusKind::Modified,
-                    old_text: "ipsum\n".into(),
+                    diff_status: DiffHunkStatusKind::Added,
+                    old_text: "".into(),
                }],
            )]
        );
@@ -1133,7 +1222,7 @@ mod tests {
            .unwrap();

        cx.update(|cx| {
-            action_log.update(cx, |log, cx| log.track_buffer(buffer.clone(), cx));
+            action_log.update(cx, |log, cx| log.buffer_read(buffer.clone(), cx));
            buffer.update(cx, |buffer, cx| {
                buffer
                    .edit([(Point::new(1, 1)..Point::new(1, 2), "E\nXYZ")], None, cx)
@@ -1268,7 +1357,7 @@ mod tests {
            .unwrap();

        cx.update(|cx| {
-            action_log.update(cx, |log, cx| log.track_buffer(buffer.clone(), cx));
+            action_log.update(cx, |log, cx| log.buffer_read(buffer.clone(), cx));
            buffer.update(cx, |buffer, cx| {
                buffer
                    .edit([(Point::new(1, 1)..Point::new(1, 2), "E\nXYZ")], None, cx)
@@ -1401,7 +1490,7 @@ mod tests {
            .await
            .unwrap();
        cx.update(|cx| {
-            action_log.update(cx, |log, cx| log.track_buffer(buffer.clone(), cx));
+            action_log.update(cx, |log, cx| log.buffer_created(buffer.clone(), cx));
            buffer.update(cx, |buffer, cx| buffer.set_text("content", cx));
            action_log.update(cx, |log, cx| log.buffer_edited(buffer.clone(), cx));
        });
@@ -1459,7 +1548,7 @@ mod tests {
            .await
            .unwrap();

-        action_log.update(cx, |log, cx| log.track_buffer(buffer.clone(), cx));
+        action_log.update(cx, |log, cx| log.buffer_read(buffer.clone(), cx));

        for _ in 0..operations {
            match rng.gen_range(0..100) {
@@ -1511,7 +1600,7 @@ mod tests {
            log::info!("quiescing...");
            cx.run_until_parked();
            action_log.update(cx, |log, cx| {
-                let tracked_buffer = log.track_buffer_internal(buffer.clone(), cx);
+                let tracked_buffer = log.tracked_buffers.get(&buffer).unwrap();
                let mut old_text = tracked_buffer.base_text.clone();
                let new_text = buffer.read(cx).as_rope();
                for edit in tracked_buffer.unreviewed_changes.edits() {
--- a/crates/assistant_tool/src/assistant_tool.rs
+++ b/crates/assistant_tool/src/assistant_tool.rs
@@ -7,6 +7,7 @@ mod tool_working_set;
 use std::fmt;
 use std::fmt::Debug;
 use std::fmt::Formatter;
+use std::ops::Deref;
 use std::sync::Arc;

 use anyhow::Result;
@@ -17,6 +18,7 @@ use gpui::IntoElement;
 use gpui::Window;
 use gpui::{App, Entity, SharedString, Task, WeakEntity};
 use icons::IconName;
+use language_model::LanguageModel;
 use language_model::LanguageModelRequestMessage;
 use language_model::LanguageModelToolSchemaFormat;
 use project::Project;
@@ -61,11 +63,34 @@ impl ToolUseStatus {
    }
 }

+#[derive(Debug)]
+pub struct ToolResultOutput {
+    pub content: String,
+    pub output: Option<serde_json::Value>,
+}
+
+impl From<String> for ToolResultOutput {
+    fn from(value: String) -> Self {
+        ToolResultOutput {
+            content: value,
+            output: None,
+        }
+    }
+}
+
+impl Deref for ToolResultOutput {
+    type Target = String;
+
+    fn deref(&self) -> &Self::Target {
+        &self.content
+    }
+}
+
 /// The result of running a tool, containing both the asynchronous output
 /// and an optional card view that can be rendered immediately.
 pub struct ToolResult {
    /// The asynchronous task that will eventually resolve to the tool's output
-    pub output: Task<Result<String>>,
+    pub output: Task<Result<ToolResultOutput>>,
    /// An optional view to present the output of the tool.
    pub card: Option<AnyToolCard>,
 }
@@ -128,9 +153,9 @@ impl AnyToolCard {
    }
 }

-impl From<Task<Result<String>>> for ToolResult {
+impl From<Task<Result<ToolResultOutput>>> for ToolResult {
    /// Convert from a task to a ToolResult with no card
-    fn from(output: Task<Result<String>>) -> Self {
+    fn from(output: Task<Result<ToolResultOutput>>) -> Self {
        Self { output, card: None }
    }
 }
@@ -184,9 +209,20 @@ pub trait Tool: 'static + Send + Sync {
        messages: &[LanguageModelRequestMessage],
        project: Entity<Project>,
        action_log: Entity<ActionLog>,
+        model: Arc<dyn LanguageModel>,
        window: Option<AnyWindowHandle>,
        cx: &mut App,
    ) -> ToolResult;
+
+    fn deserialize_card(
+        self: Arc<Self>,
+        _output: serde_json::Value,
+        _project: Entity<Project>,
+        _window: &mut Window,
+        _cx: &mut App,
+    ) -> Option<AnyToolCard> {
+        None
+    }
 }

 impl Debug for dyn Tool {
--- a/crates/assistant_tool/src/outline.rs
+++ b/crates/assistant_tool/src/outline.rs
@@ -31,7 +31,7 @@ pub async fn file_outline(
    };

    action_log.update(cx, |action_log, cx| {
-        action_log.track_buffer(buffer.clone(), cx);
+        action_log.buffer_read(buffer.clone(), cx);
    })?;

    // Wait until the buffer has been fully parsed, so that we can read its outline.
--- a/crates/assistant_tools/Cargo.toml
+++ b/crates/assistant_tools/Cargo.toml
@@ -35,8 +35,11 @@ indoc.workspace = true
 itertools.workspace = true
 language.workspace = true
 language_model.workspace = true
+log.workspace = true
 linkme.workspace = true
 open.workspace = true
+paths.workspace = true
+portable-pty.workspace = true
 project.workspace = true
 regex.workspace = true
 rust-embed.workspace = true
@@ -50,9 +53,11 @@ strsim.workspace = true
 task.workspace = true
 terminal.workspace = true
 terminal_view.workspace = true
+theme.workspace = true
 ui.workspace = true
 util.workspace = true
 web_search.workspace = true
+which.workspace = true
 workspace-hack.workspace = true
 workspace.workspace = true
 zed_llm_client.workspace = true
@@ -74,6 +79,8 @@ reqwest_client.workspace = true
 settings = { workspace = true, features = ["test-support"] }
 task = { workspace = true, features = ["test-support"]}
 tempfile.workspace = true
+theme.workspace = true
 tree-sitter-rust.workspace = true
 workspace = { workspace = true, features = ["test-support"] }
 unindent.workspace = true
+zlog.workspace = true
--- a/crates/assistant_tools/src/assistant_tools.rs
+++ b/crates/assistant_tools/src/assistant_tools.rs
@@ -1,6 +1,5 @@
 mod copy_path_tool;
 mod create_directory_tool;
-mod create_file_tool;
 mod delete_path_tool;
 mod diagnostics_tool;
 mod edit_agent;
@@ -13,9 +12,7 @@ mod move_path_tool;
 mod now_tool;
 mod open_tool;
 mod read_file_tool;
-mod replace;
 mod schema;
-mod streaming_edit_file_tool;
 mod templates;
 mod terminal_tool;
 mod thinking_tool;
@@ -24,15 +21,12 @@ mod web_search_tool;

 use std::sync::Arc;

-use assistant_settings::AssistantSettings;
 use assistant_tool::ToolRegistry;
 use copy_path_tool::CopyPathTool;
-use feature_flags::{AgentStreamEditsFeatureFlag, FeatureFlagAppExt};
 use gpui::{App, Entity};
 use http_client::HttpClientWithUrl;
 use language_model::LanguageModelRegistry;
 use move_path_tool::MovePathTool;
-use settings::{Settings, SettingsStore};
 use web_search_tool::WebSearchTool;

 pub(crate) use templates::*;
@@ -40,28 +34,26 @@ pub(crate) use templates::*;
 use crate::create_directory_tool::CreateDirectoryTool;
 use crate::delete_path_tool::DeletePathTool;
 use crate::diagnostics_tool::DiagnosticsTool;
+use crate::edit_file_tool::EditFileTool;
 use crate::fetch_tool::FetchTool;
 use crate::find_path_tool::FindPathTool;
 use crate::grep_tool::GrepTool;
 use crate::list_directory_tool::ListDirectoryTool;
 use crate::now_tool::NowTool;
 use crate::read_file_tool::ReadFileTool;
-use crate::streaming_edit_file_tool::StreamingEditFileTool;
 use crate::thinking_tool::ThinkingTool;

-pub use create_file_tool::{CreateFileTool, CreateFileToolInput};
-pub use edit_file_tool::{EditFileTool, EditFileToolInput};
+pub use edit_file_tool::EditFileToolInput;
 pub use find_path_tool::FindPathToolInput;
 pub use open_tool::OpenTool;
 pub use read_file_tool::ReadFileToolInput;
-pub use streaming_edit_file_tool::StreamingEditFileToolInput;
 pub use terminal_tool::TerminalTool;

 pub fn init(http_client: Arc<HttpClientWithUrl>, cx: &mut App) {
    assistant_tool::init(cx);

    let registry = ToolRegistry::global(cx);
-    registry.register_tool(TerminalTool);
+    registry.register_tool(TerminalTool::new(cx));
    registry.register_tool(CreateDirectoryTool);
    registry.register_tool(CopyPathTool);
    registry.register_tool(DeletePathTool);
@@ -75,12 +67,7 @@ pub fn init(http_client: Arc<HttpClientWithUrl>, cx: &mut App) {
    registry.register_tool(GrepTool);
    registry.register_tool(ThinkingTool);
    registry.register_tool(FetchTool::new(http_client));
-
-    register_edit_file_tool(cx);
-    cx.observe_flag::<AgentStreamEditsFeatureFlag, _>(|_, cx| register_edit_file_tool(cx))
-        .detach();
-    cx.observe_global::<SettingsStore>(register_edit_file_tool)
-        .detach();
+    registry.register_tool(EditFileTool);

    register_web_search_tool(&LanguageModelRegistry::global(cx), cx);
    cx.subscribe(
@@ -107,29 +94,16 @@ fn register_web_search_tool(registry: &Entity<LanguageModelRegistry>, cx: &mut A
    }
 }

-fn register_edit_file_tool(cx: &mut App) {
-    let registry = ToolRegistry::global(cx);
-
-    registry.unregister_tool(CreateFileTool);
-    registry.unregister_tool(EditFileTool);
-    registry.unregister_tool(StreamingEditFileTool);
-
-    if AssistantSettings::get_global(cx).stream_edits(cx) {
-        registry.register_tool(StreamingEditFileTool);
-    } else {
-        registry.register_tool(CreateFileTool);
-        registry.register_tool(EditFileTool);
-    }
-}
-
 #[cfg(test)]
 mod tests {
    use super::*;
+    use assistant_settings::AssistantSettings;
    use client::Client;
    use clock::FakeSystemClock;
    use http_client::FakeHttpClient;
    use schemars::JsonSchema;
    use serde::Serialize;
+    use settings::Settings;

    #[test]
    fn test_json_schema() {
--- a/crates/assistant_tools/src/copy_path_tool.rs
+++ b/crates/assistant_tools/src/copy_path_tool.rs
@@ -3,8 +3,8 @@ use anyhow::{Result, anyhow};
 use assistant_tool::{ActionLog, Tool, ToolResult};
 use gpui::AnyWindowHandle;
 use gpui::{App, AppContext, Entity, Task};
-use language_model::LanguageModelRequestMessage;
 use language_model::LanguageModelToolSchemaFormat;
+use language_model::{LanguageModel, LanguageModelRequestMessage};
 use project::Project;
 use schemars::JsonSchema;
 use serde::{Deserialize, Serialize};
@@ -77,6 +77,7 @@ impl Tool for CopyPathTool {
        _messages: &[LanguageModelRequestMessage],
        project: Entity<Project>,
        _action_log: Entity<ActionLog>,
+        _model: Arc<dyn LanguageModel>,
        _window: Option<AnyWindowHandle>,
        cx: &mut App,
    ) -> ToolResult {
@@ -107,10 +108,9 @@ impl Tool for CopyPathTool {

        cx.background_spawn(async move {
            match copy_task.await {
-                Ok(_) => Ok(format!(
-                    "Copied {} to {}",
-                    input.source_path, input.destination_path
-                )),
+                Ok(_) => Ok(
+                    format!("Copied {} to {}", input.source_path, input.destination_path).into(),
+                ),
                Err(err) => Err(anyhow!(
                    "Failed to copy {} to {}: {}",
                    input.source_path,
--- a/crates/assistant_tools/src/create_directory_tool.rs
+++ b/crates/assistant_tools/src/create_directory_tool.rs
@@ -3,8 +3,7 @@ use anyhow::{Result, anyhow};
 use assistant_tool::{ActionLog, Tool, ToolResult};
 use gpui::AnyWindowHandle;
 use gpui::{App, Entity, Task};
-use language_model::LanguageModelRequestMessage;
-use language_model::LanguageModelToolSchemaFormat;
+use language_model::{LanguageModel, LanguageModelRequestMessage, LanguageModelToolSchemaFormat};
 use project::Project;
 use schemars::JsonSchema;
 use serde::{Deserialize, Serialize};
@@ -65,6 +64,7 @@ impl Tool for CreateDirectoryTool {
        _messages: &[LanguageModelRequestMessage],
        project: Entity<Project>,
        _action_log: Entity<ActionLog>,
+        _model: Arc<dyn LanguageModel>,
        _window: Option<AnyWindowHandle>,
        cx: &mut App,
    ) -> ToolResult {
@@ -88,7 +88,7 @@ impl Tool for CreateDirectoryTool {
                .await
                .map_err(|err| anyhow!("Unable to create directory {destination_path}: {err}"))?;

-            Ok(format!("Created directory {destination_path}"))
+            Ok(format!("Created directory {destination_path}").into())
        })
        .into()
    }
--- a/crates/assistant_tools/src/create_file_tool.rs
+++ b/crates/assistant_tools/src/create_file_tool.rs
@@ -1,195 +0,0 @@
-use crate::schema::json_schema_for;
-use anyhow::{Result, anyhow};
-use assistant_tool::{ActionLog, Tool, ToolResult};
-use gpui::AnyWindowHandle;
-use gpui::{App, Entity, Task};
-use language_model::LanguageModelRequestMessage;
-use language_model::LanguageModelToolSchemaFormat;
-use project::Project;
-use schemars::JsonSchema;
-use serde::{Deserialize, Serialize};
-use std::sync::Arc;
-use ui::IconName;
-use util::markdown::MarkdownInlineCode;
-
-#[derive(Debug, Serialize, Deserialize, JsonSchema)]
-pub struct CreateFileToolInput {
-    /// The path where the file should be created.
-    ///
-    /// <example>
-    /// If the project has the following structure:
-    ///
-    /// - directory1/
-    /// - directory2/
-    ///
-    /// You can create a new file by providing a path of "directory1/new_file.txt"
-    /// </example>
-    ///
-    /// Make sure to include this field before the `contents` field in the input object
-    /// so that we can display it immediately.
-    pub path: String,
-
-    /// The text contents of the file to create.
-    ///
-    /// <example>
-    /// To create a file with the text "Hello, World!", provide contents of "Hello, World!"
-    /// </example>
-    pub contents: String,
-}
-
-#[derive(Debug, Serialize, Deserialize, JsonSchema)]
-struct PartialInput {
-    #[serde(default)]
-    path: String,
-    #[serde(default)]
-    contents: String,
-}
-
-pub struct CreateFileTool;
-
-const DEFAULT_UI_TEXT: &str = "Create file";
-
-impl Tool for CreateFileTool {
-    fn name(&self) -> String {
-        "create_file".into()
-    }
-
-    fn needs_confirmation(&self, _: &serde_json::Value, _: &App) -> bool {
-        false
-    }
-
-    fn description(&self) -> String {
-        include_str!("./create_file_tool/description.md").into()
-    }
-
-    fn icon(&self) -> IconName {
-        IconName::FileCreate
-    }
-
-    fn input_schema(&self, format: LanguageModelToolSchemaFormat) -> Result<serde_json::Value> {
-        json_schema_for::<CreateFileToolInput>(format)
-    }
-
-    fn ui_text(&self, input: &serde_json::Value) -> String {
-        match serde_json::from_value::<CreateFileToolInput>(input.clone()) {
-            Ok(input) => {
-                let path = MarkdownInlineCode(&input.path);
-                format!("Create file {path}")
-            }
-            Err(_) => DEFAULT_UI_TEXT.to_string(),
-        }
-    }
-
-    fn still_streaming_ui_text(&self, input: &serde_json::Value) -> String {
-        match serde_json::from_value::<PartialInput>(input.clone()).ok() {
-            Some(input) if !input.path.is_empty() => input.path,
-            _ => DEFAULT_UI_TEXT.to_string(),
-        }
-    }
-
-    fn run(
-        self: Arc<Self>,
-        input: serde_json::Value,
-        _messages: &[LanguageModelRequestMessage],
-        project: Entity<Project>,
-        action_log: Entity<ActionLog>,
-        _window: Option<AnyWindowHandle>,
-        cx: &mut App,
-    ) -> ToolResult {
-        let input = match serde_json::from_value::<CreateFileToolInput>(input) {
-            Ok(input) => input,
-            Err(err) => return Task::ready(Err(anyhow!(err))).into(),
-        };
-        let project_path = match project.read(cx).find_project_path(&input.path, cx) {
-            Some(project_path) => project_path,
-            None => {
-                return Task::ready(Err(anyhow!("Path to create was outside the project"))).into();
-            }
-        };
-        let contents: Arc<str> = input.contents.as_str().into();
-        let destination_path: Arc<str> = input.path.as_str().into();
-
-        cx.spawn(async move |cx| {
-            let buffer = project
-                .update(cx, |project, cx| {
-                    project.open_buffer(project_path.clone(), cx)
-                })?
-                .await
-                .map_err(|err| anyhow!("Unable to open buffer for {destination_path}: {err}"))?;
-            cx.update(|cx| {
-                action_log.update(cx, |action_log, cx| {
-                    action_log.track_buffer(buffer.clone(), cx)
-                });
-                buffer.update(cx, |buffer, cx| buffer.set_text(contents, cx));
-                action_log.update(cx, |action_log, cx| {
-                    action_log.buffer_edited(buffer.clone(), cx)
-                });
-            })?;
-
-            project
-                .update(cx, |project, cx| project.save_buffer(buffer, cx))?
-                .await
-                .map_err(|err| anyhow!("Unable to save buffer for {destination_path}: {err}"))?;
-
-            Ok(format!("Created file {destination_path}"))
-        })
-        .into()
-    }
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-    use serde_json::json;
-
-    #[test]
-    fn still_streaming_ui_text_with_path() {
-        let tool = CreateFileTool;
-        let input = json!({
-            "path": "src/main.rs",
-            "contents": "fn main() {\n    println!(\"Hello, world!\");\n}"
-        });
-
-        assert_eq!(tool.still_streaming_ui_text(&input), "src/main.rs");
-    }
-
-    #[test]
-    fn still_streaming_ui_text_without_path() {
-        let tool = CreateFileTool;
-        let input = json!({
-            "path": "",
-            "contents": "fn main() {\n    println!(\"Hello, world!\");\n}"
-        });
-
-        assert_eq!(tool.still_streaming_ui_text(&input), DEFAULT_UI_TEXT);
-    }
-
-    #[test]
-    fn still_streaming_ui_text_with_null() {
-        let tool = CreateFileTool;
-        let input = serde_json::Value::Null;
-
-        assert_eq!(tool.still_streaming_ui_text(&input), DEFAULT_UI_TEXT);
-    }
-
-    #[test]
-    fn ui_text_with_valid_input() {
-        let tool = CreateFileTool;
-        let input = json!({
-            "path": "src/main.rs",
-            "contents": "fn main() {\n    println!(\"Hello, world!\");\n}"
-        });
-
-        assert_eq!(tool.ui_text(&input), "Create file `src/main.rs`");
-    }
-
-    #[test]
-    fn ui_text_with_invalid_input() {
-        let tool = CreateFileTool;
-        let input = json!({
-            "invalid": "field"
-        });
-
-        assert_eq!(tool.ui_text(&input), DEFAULT_UI_TEXT);
-    }
-}
--- a/crates/assistant_tools/src/create_file_tool/description.md
+++ b/crates/assistant_tools/src/create_file_tool/description.md
@@ -1,3 +0,0 @@
-Creates a new file at the specified path within the project, containing the given text content. Returns confirmation that the file was created.
-
-This tool is the most efficient way to create new files within the project, so it should always be chosen whenever it's necessary to create a new file in the project with specific text content, or whenever a file in the project needs such a drastic change that you would prefer to replace the entire thing instead of making individual edits. This tool should not be used when making changes to parts of an existing file but not all of it. In those cases, it's better to use another approach to edit the file.
--- a/crates/assistant_tools/src/delete_path_tool.rs
+++ b/crates/assistant_tools/src/delete_path_tool.rs
@@ -3,7 +3,7 @@ use anyhow::{Result, anyhow};
 use assistant_tool::{ActionLog, Tool, ToolResult};
 use futures::{SinkExt, StreamExt, channel::mpsc};
 use gpui::{AnyWindowHandle, App, AppContext, Entity, Task};
-use language_model::{LanguageModelRequestMessage, LanguageModelToolSchemaFormat};
+use language_model::{LanguageModel, LanguageModelRequestMessage, LanguageModelToolSchemaFormat};
 use project::{Project, ProjectPath};
 use schemars::JsonSchema;
 use serde::{Deserialize, Serialize};
@@ -62,6 +62,7 @@ impl Tool for DeletePathTool {
        _messages: &[LanguageModelRequestMessage],
        project: Entity<Project>,
        action_log: Entity<ActionLog>,
+        _model: Arc<dyn LanguageModel>,
        _window: Option<AnyWindowHandle>,
        cx: &mut App,
    ) -> ToolResult {
@@ -127,7 +128,7 @@ impl Tool for DeletePathTool {

            match delete {
                Some(deletion_task) => match deletion_task.await {
-                    Ok(()) => Ok(format!("Deleted {path_str}")),
+                    Ok(()) => Ok(format!("Deleted {path_str}").into()),
                    Err(err) => Err(anyhow!("Failed to delete {path_str}: {err}")),
                },
                None => Err(anyhow!(
--- a/crates/assistant_tools/src/diagnostics_tool.rs
+++ b/crates/assistant_tools/src/diagnostics_tool.rs
@@ -3,7 +3,7 @@ use anyhow::{Result, anyhow};
 use assistant_tool::{ActionLog, Tool, ToolResult};
 use gpui::{AnyWindowHandle, App, Entity, Task};
 use language::{DiagnosticSeverity, OffsetRangeExt};
-use language_model::{LanguageModelRequestMessage, LanguageModelToolSchemaFormat};
+use language_model::{LanguageModel, LanguageModelRequestMessage, LanguageModelToolSchemaFormat};
 use project::Project;
 use schemars::JsonSchema;
 use serde::{Deserialize, Serialize};
@@ -82,6 +82,7 @@ impl Tool for DiagnosticsTool {
        _messages: &[LanguageModelRequestMessage],
        project: Entity<Project>,
        action_log: Entity<ActionLog>,
+        _model: Arc<dyn LanguageModel>,
        _window: Option<AnyWindowHandle>,
        cx: &mut App,
    ) -> ToolResult {
@@ -122,9 +123,9 @@ impl Tool for DiagnosticsTool {
                    }

                    if output.is_empty() {
-                        Ok("File doesn't have errors or warnings!".to_string())
+                        Ok("File doesn't have errors or warnings!".to_string().into())
                    } else {
-                        Ok(output)
+                        Ok(output.into())
                    }
                })
                .into()
@@ -158,10 +159,12 @@ impl Tool for DiagnosticsTool {
                });

                if has_diagnostics {
-                    Task::ready(Ok(output)).into()
+                    Task::ready(Ok(output.into())).into()
                } else {
-                    Task::ready(Ok("No errors or warnings found in the project.".to_string()))
-                        .into()
+                    Task::ready(Ok("No errors or warnings found in the project."
+                        .to_string()
+                        .into()))
+                    .into()
                }
            }
        }
--- a/crates/assistant_tools/src/edit_agent.rs
+++ b/crates/assistant_tools/src/edit_agent.rs
@@ -101,7 +101,7 @@ impl EditAgent {
            .render(&this.templates)?;
            let new_chunks = this.request(previous_messages, prompt, cx).await?;

-            let (output, mut inner_events) = this.replace_text_with_chunks(buffer, new_chunks, cx);
+            let (output, mut inner_events) = this.overwrite_with_chunks(buffer, new_chunks, cx);
            while let Some(event) = inner_events.next().await {
                events_tx.unbounded_send(event).ok();
            }
@@ -110,7 +110,7 @@ impl EditAgent {
        (output, events_rx)
    }

-    fn replace_text_with_chunks(
+    fn overwrite_with_chunks(
        &self,
        buffer: Entity<Buffer>,
        edit_chunks: impl 'static + Send + Stream<Item = Result<String, LanguageModelCompletionError>>,
@@ -123,9 +123,9 @@ impl EditAgent {
        let this = self.clone();
        let task = cx.spawn(async move |cx| {
            this.action_log
-                .update(cx, |log, cx| log.track_buffer(buffer.clone(), cx))?;
+                .update(cx, |log, cx| log.buffer_created(buffer.clone(), cx))?;
            let output = this
-                .replace_text_with_chunks_internal(buffer, edit_chunks, output_events_tx, cx)
+                .overwrite_with_chunks_internal(buffer, edit_chunks, output_events_tx, cx)
                .await;
            this.project
                .update(cx, |project, cx| project.set_agent_location(None, cx))?;
@@ -134,7 +134,7 @@ impl EditAgent {
        (task, output_events_rx)
    }

-    async fn replace_text_with_chunks_internal(
+    async fn overwrite_with_chunks_internal(
        &self,
        buffer: Entity<Buffer>,
        edit_chunks: impl 'static + Send + Stream<Item = Result<String, LanguageModelCompletionError>>,
@@ -246,9 +246,9 @@ impl EditAgent {
        let this = self.clone();
        let task = cx.spawn(async move |mut cx| {
            this.action_log
-                .update(cx, |log, cx| log.track_buffer(buffer.clone(), cx))?;
+                .update(cx, |log, cx| log.buffer_read(buffer.clone(), cx))?;
            let output = this
-                .apply_edits_internal(buffer, edit_chunks, output_events_tx, &mut cx)
+                .apply_edit_chunks_internal(buffer, edit_chunks, output_events_tx, &mut cx)
                .await;
            this.project
                .update(cx, |project, cx| project.set_agent_location(None, cx))?;
@@ -257,7 +257,7 @@ impl EditAgent {
        (task, output_events_rx)
    }

-    async fn apply_edits_internal(
+    async fn apply_edit_chunks_internal(
        &self,
        buffer: Entity<Buffer>,
        edit_chunks: impl 'static + Send + Stream<Item = Result<String, LanguageModelCompletionError>>,
@@ -269,6 +269,12 @@ impl EditAgent {
            let EditParserEvent::OldText(old_text_query) = edit_event? else {
                continue;
            };
+
+            // Skip edits with an empty old text.
+            if old_text_query.is_empty() {
+                continue;
+            }
+
            let old_text_query = SharedString::from(old_text_query);

            let (edits_tx, edits_rx) = mpsc::unbounded();
@@ -652,14 +658,16 @@ impl EditAgent {
 }

 fn fuzzy_eq(left: &str, right: &str) -> bool {
+    const THRESHOLD: f64 = 0.8;
+
    let min_levenshtein = left.len().abs_diff(right.len());
    let min_normalized_levenshtein =
-        1. - (min_levenshtein as f32 / cmp::max(left.len(), right.len()) as f32);
-    if min_normalized_levenshtein < 0.8 {
+        1. - (min_levenshtein as f64 / cmp::max(left.len(), right.len()) as f64);
+    if min_normalized_levenshtein < THRESHOLD {
        return false;
    }

-    strsim::normalized_levenshtein(left, right) >= 0.8
+    strsim::normalized_levenshtein(left, right) >= THRESHOLD
 }

 #[derive(Copy, Clone, Debug)]
@@ -740,6 +748,42 @@ mod tests {
    use unindent::Unindent;
    use util::test::{generate_marked_text, marked_text_ranges};

+    #[gpui::test(iterations = 100)]
+    async fn test_empty_old_text(cx: &mut TestAppContext, mut rng: StdRng) {
+        let agent = init_test(cx).await;
+        let buffer = cx.new(|cx| {
+            Buffer::local(
+                indoc! {"
+                    abc
+                    def
+                    ghi
+                "},
+                cx,
+            )
+        });
+        let raw_edits = simulate_llm_output(
+            indoc! {"
+                <old_text></old_text>
+                <new_text>jkl</new_text>
+                <old_text>def</old_text>
+                <new_text>DEF</new_text>
+            "},
+            &mut rng,
+            cx,
+        );
+        let (apply, _events) =
+            agent.apply_edit_chunks(buffer.clone(), raw_edits, &mut cx.to_async());
+        apply.await.unwrap();
+        pretty_assertions::assert_eq!(
+            buffer.read_with(cx, |buffer, _| buffer.snapshot().text()),
+            indoc! {"
+                abc
+                DEF
+                ghi
+            "}
+        );
+    }
+
    #[gpui::test(iterations = 100)]
    async fn test_indentation(cx: &mut TestAppContext, mut rng: StdRng) {
        let agent = init_test(cx).await;
@@ -1027,7 +1071,7 @@ mod tests {
            .read_with(cx, |log, _| log.project().clone());
        let buffer = cx.new(|cx| Buffer::local("abc\ndef\nghi", cx));
        let (chunks_tx, chunks_rx) = mpsc::unbounded();
-        let (apply, mut events) = agent.replace_text_with_chunks(
+        let (apply, mut events) = agent.overwrite_with_chunks(
            buffer.clone(),
            chunks_rx.map(|chunk: &str| Ok(chunk.to_string())),
            &mut cx.to_async(),
--- a/crates/assistant_tools/src/edit_agent/evals.rs
+++ b/crates/assistant_tools/src/edit_agent/evals.rs
@@ -1,8 +1,5 @@
 use super::*;
-use crate::{
-    ReadFileToolInput, grep_tool::GrepToolInput,
-    streaming_edit_file_tool::StreamingEditFileToolInput,
-};
+use crate::{ReadFileToolInput, edit_file_tool::EditFileToolInput, grep_tool::GrepToolInput};
 use Role::*;
 use anyhow::anyhow;
 use client::{Client, UserStore};
@@ -69,7 +66,7 @@ fn eval_extract_handle_command_output() {
                    [tool_use(
                        "tool_2",
                        "edit_file",
-                        StreamingEditFileToolInput {
+                        EditFileToolInput {
                            display_description: edit_description.into(),
                            path: input_file_path.into(),
                            create_or_overwrite: false,
@@ -125,7 +122,7 @@ fn eval_delete_run_git_blame() {
                    [tool_use(
                        "tool_2",
                        "edit_file",
-                        StreamingEditFileToolInput {
+                        EditFileToolInput {
                            display_description: edit_description.into(),
                            path: input_file_path.into(),
                            create_or_overwrite: false,
@@ -240,7 +237,7 @@ fn eval_use_wasi_sdk_in_compile_parser_to_wasm() {
                    [tool_use(
                        "tool_4",
                        "edit_file",
-                        StreamingEditFileToolInput {
+                        EditFileToolInput {
                            display_description: edit_description.into(),
                            path: input_file_path.into(),
                            create_or_overwrite: false,
@@ -267,7 +264,7 @@ fn eval_disable_cursor_blinking() {
    let output_file_content = include_str!("evals/fixtures/disable_cursor_blinking/after.rs");
    let edit_description = "Comment out the call to `BlinkManager::enable`";
    eval(
-        100,
+        200,
        0.6, // TODO: make this eval better
        EvalInput {
            conversation: vec![
@@ -316,7 +313,7 @@ fn eval_disable_cursor_blinking() {
                    [tool_use(
                        "tool_4",
                        "edit_file",
-                        StreamingEditFileToolInput {
+                        EditFileToolInput {
                            display_description: edit_description.into(),
                            path: input_file_path.into(),
                            create_or_overwrite: false,
@@ -506,7 +503,7 @@ fn eval_from_pixels_constructor() {
                    [tool_use(
                        "tool_5",
                        "edit_file",
-                        StreamingEditFileToolInput {
+                        EditFileToolInput {
                            display_description: edit_description.into(),
                            path: input_file_path.into(),
                            create_or_overwrite: false,
@@ -583,7 +580,7 @@ fn eval_zode() {
                        tool_use(
                            "tool_3",
                            "edit_file",
-                            StreamingEditFileToolInput {
+                            EditFileToolInput {
                                display_description: edit_description.into(),
                                path: input_file_path.into(),
                                create_or_overwrite: true,
@@ -623,6 +620,230 @@ fn eval_zode() {
    );
 }

+#[test]
+#[cfg_attr(not(feature = "eval"), ignore)]
+fn eval_add_overwrite_test() {
+    let input_file_path = "root/action_log.rs";
+    let input_file_content = include_str!("evals/fixtures/add_overwrite_test/before.rs");
+    let edit_description = "Add a new test for overwriting a file in action_log.rs";
+    eval(
+        200,
+        0.5, // TODO: make this eval better
+        EvalInput {
+            conversation: vec![
+                message(
+                    User,
+                    [text(indoc! {"
+                        Introduce a new test in `action_log.rs` to test overwriting a file.
+                        That is, a file already exists, but we call `buffer_created` as if the file were new.
+                        Take inspiration from all the other tests in the file.
+                    "})],
+                ),
+                message(
+                    Assistant,
+                    [tool_use(
+                        "tool_1",
+                        "read_file",
+                        ReadFileToolInput {
+                            path: input_file_path.into(),
+                            start_line: None,
+                            end_line: None,
+                        },
+                    )],
+                ),
+                message(
+                    User,
+                    [tool_result(
+                        "tool_1",
+                        "read_file",
+                        indoc! {"
+                            pub struct ActionLog [L13-20]
+                             tracked_buffers [L15]
+                             edited_since_project_diagnostics_check [L17]
+                             project [L19]
+                            impl ActionLog [L22-498]
+                             pub fn new [L24-30]
+                             pub fn project [L32-34]
+                             pub fn checked_project_diagnostics [L37-39]
+                             pub fn has_edited_files_since_project_diagnostics_check [L42-44]
+                             fn track_buffer_internal [L46-101]
+                             fn handle_buffer_event [L103-116]
+                             fn handle_buffer_edited [L118-123]
+                             fn handle_buffer_file_changed [L125-158]
+                             async fn maintain_diff [L160-264]
+                             pub fn buffer_read [L267-269]
+                             pub fn buffer_created [L272-276]
+                             pub fn buffer_edited [L279-287]
+                             pub fn will_delete_buffer [L289-304]
+                             pub fn keep_edits_in_range [L306-364]
+                             pub fn reject_edits_in_ranges [L366-459]
+                             pub fn keep_all_edits [L461-473]
+                             pub fn changed_buffers [L476-482]
+                             pub fn stale_buffers [L485-497]
+                            fn apply_non_conflicting_edits [L500-561]
+                            fn diff_snapshots [L563-585]
+                            fn point_to_row_edit [L587-614]
+                            enum ChangeAuthor [L617-620]
+                             User [L618]
+                             Agent [L619]
+                            enum TrackedBufferStatus [L623-627]
+                             Created [L624]
+                             Modified [L625]
+                             Deleted [L626]
+                            struct TrackedBuffer [L629-641]
+                             buffer [L630]
+                             base_text [L631]
+                             unreviewed_changes [L632]
+                             status [L633]
+                             version [L634]
+                             diff [L635]
+                             snapshot [L636]
+                             diff_update [L637]
+                             _open_lsp_handle [L638]
+                             _maintain_diff [L639]
+                             _subscription [L640]
+                            impl TrackedBuffer [L643-657]
+                             fn has_changes [L644-650]
+                             fn schedule_diff_update [L652-656]
+                            pub struct ChangedBuffer [L659-661]
+                             pub diff [L660]
+                            mod tests [L664-1574]
+                             fn init_logger [L678-682]
+                             fn init_test [L684-691]
+                             async fn test_keep_edits [L694-769]
+                             async fn test_deletions [L772-854]
+                             async fn test_overlapping_user_edits [L857-951]
+                             async fn test_creating_files [L954-1010]
+                             async fn test_deleting_files [L1013-1120]
+                             async fn test_reject_edits [L1123-1255]
+                             async fn test_reject_multiple_edits [L1258-1331]
+                             async fn test_reject_deleted_file [L1334-1388]
+                             async fn test_reject_created_file [L1391-1443]
+                             async fn test_random_diffs [L1446-1535]
+                              fn quiesce [L1510-1534]
+                             struct HunkStatus [L1538-1542]
+                              range [L1539]
+                              diff_status [L1540]
+                              old_text [L1541]
+                             fn unreviewed_hunks [L1544-1573]
+
+                            Showing symbols 1-69 (total symbols: 69)
+
+                            Using the line numbers in this outline, you can call this tool again while specifying
+                            the start_line and end_line fields to see the implementations of symbols in the outline.
+                        "},
+                    )],
+                ),
+                message(
+                    Assistant,
+                    [
+                        text(
+                            "Let's look at the existing test cases that are related to file creation to understand the pattern:",
+                        ),
+                        tool_use(
+                            "tool_2",
+                            "read_file",
+                            ReadFileToolInput {
+                                path: input_file_path.into(),
+                                start_line: Some(953),
+                                end_line: Some(1010),
+                            },
+                        ),
+                    ],
+                ),
+                message(
+                    User,
+                    [tool_result(
+                        "tool_2",
+                        "read_file",
+                        lines(input_file_content, 953..1010),
+                    )],
+                ),
+                message(
+                    Assistant,
+                    [
+                        text(
+                            "Now let's look at another relevant test to understand how they're structured:",
+                        ),
+                        tool_use(
+                            "tool_3",
+                            "read_file",
+                            ReadFileToolInput {
+                                path: input_file_path.into(),
+                                start_line: Some(1012),
+                                end_line: Some(1120),
+                            },
+                        ),
+                    ],
+                ),
+                message(
+                    User,
+                    [tool_result(
+                        "tool_3",
+                        "read_file",
+                        lines(input_file_content, 1012..1120),
+                    )],
+                ),
+                message(
+                    Assistant,
+                    [
+                        text("Now let's look at how `buffer_created` is implemented:"),
+                        tool_use(
+                            "tool_4",
+                            "read_file",
+                            ReadFileToolInput {
+                                path: input_file_path.into(),
+                                start_line: Some(271),
+                                end_line: Some(276),
+                            },
+                        ),
+                    ],
+                ),
+                message(
+                    User,
+                    [tool_result(
+                        "tool_4",
+                        "read_file",
+                        lines(input_file_content, 271..276),
+                    )],
+                ),
+                message(
+                    Assistant,
+                    [
+                        text(indoc! {"
+                            Based on my understanding of the existing tests and code, I'll now create a new test for overwriting a file. In this test, we'll:
+
+                            1. Create a file
+                            2. Open a buffer for it
+                            3. Track it in the action log
+                            4. Modify the buffer
+                            5. Call `buffer_created` again as if the file were new
+                            6. Check that the changes are properly tracked
+
+                            Let's write the test:
+                        "}),
+                        tool_use(
+                            "tool_5",
+                            "edit_file",
+                            EditFileToolInput {
+                                display_description: edit_description.into(),
+                                path: input_file_path.into(),
+                                create_or_overwrite: false,
+                            },
+                        ),
+                    ],
+                ),
+            ],
+            input_path: input_file_path.into(),
+            input_content: Some(input_file_content.into()),
+            edit_description: edit_description.into(),
+            assertion: EvalAssertion::judge_diff(
+                "A new test for overwritten files was created, without changing any previous test",
+            ),
+        },
+    );
+}
+
 fn message(
    role: Role,
    contents: impl IntoIterator<Item = MessageContent>,
@@ -671,6 +892,7 @@ fn tool_result(
        tool_name: name.into(),
        is_error: false,
        content: result.into(),
+        output: None,
    })
 }

@@ -879,7 +1101,7 @@ fn eval(iterations: usize, expected_pass_ratio: f32, mut eval: EvalInput) {

    let mismatched_tag_ratio =
        cumulative_parser_metrics.mismatched_tags as f32 / cumulative_parser_metrics.tags as f32;
-    if mismatched_tag_ratio > 0.02 {
+    if mismatched_tag_ratio > 0.05 {
        for eval_output in eval_outputs {
            println!("{}", eval_output);
        }
@@ -957,7 +1179,7 @@ impl EditAgentTest {

                cx.spawn(async move |cx| {
                    let agent_model =
-                        Self::load_model("google", "gemini-2.5-pro-preview-03-25", cx).await;
+                        Self::load_model("anthropic", "claude-3-7-sonnet-latest", cx).await;
                    let judge_model =
                        Self::load_model("anthropic", "claude-3-7-sonnet-latest", cx).await;
                    (agent_model.unwrap(), judge_model.unwrap())
--- a/crates/assistant_tools/src/edit_agent/evals/fixtures/add_overwrite_test/before.rs
+++ b/crates/assistant_tools/src/edit_agent/evals/fixtures/add_overwrite_test/before.rs
--- a/crates/assistant_tools/src/edit_file_tool.rs
+++ b/crates/assistant_tools/src/edit_file_tool.rs
@@ -1,29 +1,36 @@
 use crate::{
-    replace::{replace_exact, replace_with_flexible_indent},
+    Templates,
+    edit_agent::{EditAgent, EditAgentOutputEvent},
    schema::json_schema_for,
 };
-use anyhow::{Context as _, Result, anyhow};
-use assistant_tool::{ActionLog, AnyToolCard, Tool, ToolCard, ToolResult, ToolUseStatus};
-use buffer_diff::{BufferDiff, BufferDiffSnapshot};
-use editor::{Editor, EditorMode, MultiBuffer, PathKey};
-use gpui::{
-    Animation, AnimationExt, AnyWindowHandle, App, AppContext, AsyncApp, Context, Entity, EntityId,
-    Task, WeakEntity, pulsating_between,
+use anyhow::{Result, anyhow};
+use assistant_tool::{
+    ActionLog, AnyToolCard, Tool, ToolCard, ToolResult, ToolResultOutput, ToolUseStatus,
 };
+use buffer_diff::{BufferDiff, BufferDiffSnapshot};
+use editor::{Editor, EditorElement, EditorMode, EditorStyle, MultiBuffer, PathKey};
+use futures::StreamExt;
+use gpui::{
+    Animation, AnimationExt, AnyWindowHandle, App, AppContext, AsyncApp, Entity, EntityId, Task,
+    TextStyle, WeakEntity, pulsating_between,
+};
+use indoc::formatdoc;
 use language::{
    Anchor, Buffer, Capability, LanguageRegistry, LineEnding, OffsetRangeExt, Rope, TextBuffer,
    language_settings::SoftWrap,
 };
-use language_model::{LanguageModelRequestMessage, LanguageModelToolSchemaFormat};
-use project::{AgentLocation, Project};
+use language_model::{LanguageModel, LanguageModelRequestMessage, LanguageModelToolSchemaFormat};
+use project::Project;
 use schemars::JsonSchema;
 use serde::{Deserialize, Serialize};
+use settings::Settings;
 use std::{
    path::{Path, PathBuf},
    sync::Arc,
    time::Duration,
 };
-use ui::{Disclosure, Tooltip, Window, prelude::*};
+use theme::ThemeSettings;
+use ui::{Disclosure, Tooltip, prelude::*};
 use util::ResultExt;
 use workspace::Workspace;

@@ -31,7 +38,13 @@ pub struct EditFileTool;

 #[derive(Debug, Serialize, Deserialize, JsonSchema)]
 pub struct EditFileToolInput {
-    /// A user-friendly markdown description of what's being replaced. This will be shown in the UI.
+    /// A one-line, user-friendly markdown description of the edit. This will be
+    /// shown in the UI and also passed to another model to perform the edit.
+    ///
+    /// Be terse, but also descriptive in what you want to achieve with this
+    /// edit. Avoid generic instructions.
+    ///
+    /// NEVER mention the file path in this description.
    ///
    /// <example>Fix API endpoint URLs</example>
    /// <example>Update copyright year in `page_footer`</example>
@@ -40,7 +53,7 @@ pub struct EditFileToolInput {
    /// so that we can display it immediately.
    pub display_description: String,

-    /// The full path of the file to modify in the project.
+    /// The full path of the file to create or modify in the project.
    ///
    /// WARNING: When specifying which file path need changing, you MUST
    /// start each path with one of the project's root directories.
@@ -61,11 +74,19 @@ pub struct EditFileToolInput {
    /// </example>
    pub path: PathBuf,

-    /// The text to replace.
-    pub old_string: String,
+    /// If true, this tool will recreate the file from scratch.
+    /// If false, this tool will produce granular edits to an existing file.
+    ///
+    /// When a file already exists or you just created it, always prefer editing
+    /// it as opposed to recreating it from scratch.
+    pub create_or_overwrite: bool,
+}

-    /// The text to replace it with.
-    pub new_string: String,
+#[derive(Debug, Serialize, Deserialize, JsonSchema)]
+pub struct EditFileToolOutput {
+    pub original_path: PathBuf,
+    pub new_text: String,
+    pub old_text: String,
 }

 #[derive(Debug, Serialize, Deserialize, JsonSchema)]
@@ -74,10 +95,6 @@ struct PartialInput {
    path: String,
    #[serde(default)]
    display_description: String,
-    #[serde(default)]
-    old_string: String,
-    #[serde(default)]
-    new_string: String,
 }

 const DEFAULT_UI_TEXT: &str = "Editing file";
@@ -129,9 +146,10 @@ impl Tool for EditFileTool {
    fn run(
        self: Arc<Self>,
        input: serde_json::Value,
-        _messages: &[LanguageModelRequestMessage],
+        messages: &[LanguageModelRequestMessage],
        project: Entity<Project>,
        action_log: Entity<ActionLog>,
+        model: Arc<dyn LanguageModel>,
        window: Option<AnyWindowHandle>,
        cx: &mut App,
    ) -> ToolResult {
@@ -140,6 +158,14 @@ impl Tool for EditFileTool {
            Err(err) => return Task::ready(Err(anyhow!(err))).into(),
        };

+        let Some(project_path) = project.read(cx).find_project_path(&input.path, cx) else {
+            return Task::ready(Err(anyhow!(
+                "Path {} not found in project",
+                input.path.display()
+            )))
+            .into();
+        };
+
        let card = window.and_then(|window| {
            window
                .update(cx, |_, window, cx| {
@@ -151,12 +177,9 @@ impl Tool for EditFileTool {
        });

        let card_clone = card.clone();
+        let messages = messages.to_vec();
        let task = cx.spawn(async move |cx: &mut AsyncApp| {
-            let project_path = project.read_with(cx, |project, cx| {
-                project
-                    .find_project_path(&input.path, cx)
-                    .context("Path not found in project")
-            })??;
+            let edit_agent = EditAgent::new(model, project.clone(), action_log, Templates::new());

            let buffer = project
                .update(cx, |project, cx| {
@@ -164,119 +187,88 @@ impl Tool for EditFileTool {
                })?
                .await?;

-            // Set the agent's location to the top of the file
-            project
-                .update(cx, |project, cx| {
-                    project.set_agent_location(
-                        Some(AgentLocation {
-                            buffer: buffer.downgrade(),
-                            position: language::Anchor::MIN,
-                        }),
-                        cx,
-                    );
-                })
-                .ok();
-
-            let snapshot = buffer.read_with(cx, |buffer, _cx| buffer.snapshot())?;
-
-            if input.old_string.is_empty() {
-                return Err(anyhow!(
-                    "`old_string` can't be empty, use another tool if you want to create a file."
-                ));
+            let exists = buffer.read_with(cx, |buffer, _| {
+                buffer
+                    .file()
+                    .as_ref()
+                    .map_or(false, |file| file.disk_state().exists())
+            })?;
+            if !input.create_or_overwrite && !exists {
+                return Err(anyhow!("{} not found", input.path.display()));
            }

-            if input.old_string == input.new_string {
-                return Err(anyhow!(
-                    "The `old_string` and `new_string` are identical, so no changes would be made."
-                ));
-            }
-
-            let result = cx
-                .background_spawn(async move {
-                    // Try to match exactly
-                    let diff = replace_exact(&input.old_string, &input.new_string, &snapshot)
-                        .await
-                        // If that fails, try being flexible about indentation
-                        .or_else(|| {
-                            replace_with_flexible_indent(
-                                &input.old_string,
-                                &input.new_string,
-                                &snapshot,
-                            )
-                        })?;
-
-                    if diff.edits.is_empty() {
-                        return None;
-                    }
-
-                    let old_text = snapshot.text();
-
-                    Some((old_text, diff))
+            let old_snapshot = buffer.read_with(cx, |buffer, _cx| buffer.snapshot())?;
+            let old_text = cx
+                .background_spawn({
+                    let old_snapshot = old_snapshot.clone();
+                    async move { old_snapshot.text() }
                })
                .await;

-            let Some((old_text, diff)) = result else {
-                let err = buffer.read_with(cx, |buffer, _cx| {
-                    let file_exists = buffer
-                        .file()
-                        .map_or(false, |file| file.disk_state().exists());
-
-                    if !file_exists {
-                        anyhow!("{} does not exist", input.path.display())
-                    } else if buffer.is_empty() {
-                        anyhow!(
-                            "{} is empty, so the provided `old_string` wasn't found.",
-                            input.path.display()
-                        )
-                    } else {
-                        anyhow!("Failed to match the provided `old_string`")
-                    }
-                })?;
-
-                return Err(err);
+            let (output, mut events) = if input.create_or_overwrite {
+                edit_agent.overwrite(
+                    buffer.clone(),
+                    input.display_description.clone(),
+                    messages,
+                    cx,
+                )
+            } else {
+                edit_agent.edit(
+                    buffer.clone(),
+                    input.display_description.clone(),
+                    messages,
+                    cx,
+                )
            };

-            let snapshot = cx.update(|cx| {
-                action_log.update(cx, |log, cx| log.track_buffer(buffer.clone(), cx));
-
-                let base_version = diff.base_version.clone();
-                let snapshot = buffer.update(cx, |buffer, cx| {
-                    buffer.finalize_last_transaction();
-                    buffer.apply_diff(diff, cx);
-                    buffer.finalize_last_transaction();
-                    buffer.snapshot()
-                });
-                action_log.update(cx, |log, cx| log.buffer_edited(buffer.clone(), cx));
-
-                // Set the agent's location to the position of the first edit
-                if let Some(first_edit) = snapshot.edits_since::<usize>(&base_version).next() {
-                    let position = snapshot.anchor_before(first_edit.new.start);
-                    project.update(cx, |project, cx| {
-                        project.set_agent_location(
-                            Some(AgentLocation {
-                                buffer: buffer.downgrade(),
-                                position,
-                            }),
-                            cx,
-                        );
-                    })
+            let mut hallucinated_old_text = false;
+            while let Some(event) = events.next().await {
+                match event {
+                    EditAgentOutputEvent::Edited => {
+                        if let Some(card) = card_clone.as_ref() {
+                            let new_snapshot =
+                                buffer.read_with(cx, |buffer, _cx| buffer.snapshot())?;
+                            let new_text = cx
+                                .background_spawn({
+                                    let new_snapshot = new_snapshot.clone();
+                                    async move { new_snapshot.text() }
+                                })
+                                .await;
+                            card.update(cx, |card, cx| {
+                                card.set_diff(
+                                    project_path.path.clone(),
+                                    old_text.clone(),
+                                    new_text,
+                                    cx,
+                                );
+                            })
+                            .log_err();
+                        }
+                    }
+                    EditAgentOutputEvent::OldTextNotFound(_) => hallucinated_old_text = true,
                }
-
-                snapshot
-            })?;
+            }
+            output.await?;

            project
-                .update(cx, |project, cx| project.save_buffer(buffer, cx))?
+                .update(cx, |project, cx| project.save_buffer(buffer.clone(), cx))?
                .await?;

-            let new_text = snapshot.text();
-            let diff_str = cx
-                .background_spawn({
-                    let old_text = old_text.clone();
-                    let new_text = new_text.clone();
-                    async move { language::unified_diff(&old_text, &new_text) }
-                })
-                .await;
+            let new_snapshot = buffer.read_with(cx, |buffer, _cx| buffer.snapshot())?;
+            let new_text = cx.background_spawn({
+                let new_snapshot = new_snapshot.clone();
+                async move { new_snapshot.text() }
+            });
+            let diff = cx.background_spawn(async move {
+                language::unified_diff(&old_snapshot.text(), &new_snapshot.text())
+            });
+            let (new_text, diff) = futures::join!(new_text, diff);
+
+            let output = EditFileToolOutput {
+                original_path: project_path.path.to_path_buf(),
+                new_text: new_text.clone(),
+                old_text: old_text.clone(),
+            };

            if let Some(card) = card_clone {
                card.update(cx, |card, cx| {
@@ -285,11 +277,23 @@ impl Tool for EditFileTool {
                .log_err();
            }

-            Ok(format!(
-                "Edited {}:\n\n```diff\n{}\n```",
-                input.path.display(),
-                diff_str
-            ))
+            let input_path = input.path.display();
+            if diff.is_empty() {
+                if hallucinated_old_text {
+                    Err(anyhow!(formatdoc! {"
+                        Some edits were produced but none of them could be applied.
+                        Read the relevant sections of {input_path} again so that
+                        I can perform the requested edits.
+                    "}))
+                } else {
+                    Ok("No edits were made.".to_string().into())
+                }
+            } else {
+                Ok(ToolResultOutput {
+                    content: format!("Edited {}:\n\n```diff\n{}\n```", input_path, diff),
+                    output: serde_json::to_value(output).ok(),
+                })
+            }
        });

        ToolResult {
@@ -297,6 +301,32 @@ impl Tool for EditFileTool {
            card: card.map(AnyToolCard::from),
        }
    }
+
+    fn deserialize_card(
+        self: Arc<Self>,
+        output: serde_json::Value,
+        project: Entity<Project>,
+        window: &mut Window,
+        cx: &mut App,
+    ) -> Option<AnyToolCard> {
+        let output = match serde_json::from_value::<EditFileToolOutput>(output) {
+            Ok(output) => output,
+            Err(_) => return None,
+        };
+
+        let card = cx.new(|cx| {
+            let mut card = EditFileToolCard::new(output.original_path.clone(), project, window, cx);
+            card.set_diff(
+                output.original_path.into(),
+                output.old_text,
+                output.new_text,
+                cx,
+            );
+            card
+        });
+
+        Some(card.into())
+    }
 }

 pub struct EditFileToolCard {
@@ -380,14 +410,13 @@ impl EditFileToolCard {
                        .map(|diff_hunk| diff_hunk.buffer_range.to_point(&snapshot))
                        .collect::<Vec<_>>();
                    multibuffer.clear(cx);
-                    let (_, is_newly_added) = multibuffer.set_excerpts_for_path(
+                    multibuffer.set_excerpts_for_path(
                        PathKey::for_buffer(&buffer, cx),
                        buffer,
                        diff_hunk_ranges,
                        editor::DEFAULT_MULTIBUFFER_CONTEXT,
                        cx,
                    );
-                    debug_assert!(is_newly_added);
                    multibuffer.add_diff(buffer_diff, cx);
                    let end = multibuffer.len(cx);
                    Some(multibuffer.snapshot(cx).offset_to_point(end).row + 1)
@@ -545,7 +574,33 @@ impl ToolCard for EditFileToolCard {
                .map(|style| style.text.line_height_in_pixels(window.rem_size()))
                .unwrap_or_default();

-            let element = editor.render(window, cx);
+            let settings = ThemeSettings::get_global(cx);
+            let element = EditorElement::new(
+                &cx.entity(),
+                EditorStyle {
+                    background: cx.theme().colors().editor_background,
+                    horizontal_padding: rems(0.25).to_pixels(window.rem_size()),
+                    local_player: cx.theme().players().local(),
+                    text: TextStyle {
+                        color: cx.theme().colors().editor_foreground,
+                        font_family: settings.buffer_font.family.clone(),
+                        font_features: settings.buffer_font.features.clone(),
+                        font_fallbacks: settings.buffer_font.fallbacks.clone(),
+                        font_size: TextSize::Small
+                            .rems(cx)
+                            .to_pixels(settings.agent_font_size(cx))
+                            .into(),
+                        font_weight: settings.buffer_font.weight,
+                        line_height: relative(settings.buffer_line_height.value()),
+                        ..Default::default()
+                    },
+                    scrollbar_width: EditorElement::SCROLLBAR_WIDTH,
+                    syntax: cx.theme().syntax().clone(),
+                    status: cx.theme().status().clone(),
+                    ..Default::default()
+                },
+            );
+
            (element.into_any_element(), line_height)
        });

@@ -555,18 +610,18 @@ impl ToolCard for EditFileToolCard {
            (IconName::ChevronDown, "Expand Code Block")
        };

-        let gradient_overlay = div()
-            .absolute()
-            .bottom_0()
-            .left_0()
-            .w_full()
-            .h_2_5()
-            .rounded_b_lg()
-            .bg(gpui::linear_gradient(
-                0.,
-                gpui::linear_color_stop(cx.theme().colors().editor_background, 0.),
-                gpui::linear_color_stop(cx.theme().colors().editor_background.opacity(0.), 1.),
-            ));
+        let gradient_overlay =
+            div()
+                .absolute()
+                .bottom_0()
+                .left_0()
+                .w_full()
+                .h_2_5()
+                .bg(gpui::linear_gradient(
+                    0.,
+                    gpui::linear_color_stop(cx.theme().colors().editor_background, 0.),
+                    gpui::linear_color_stop(cx.theme().colors().editor_background.opacity(0.), 1.),
+                ));

        let border_color = cx.theme().colors().border.opacity(0.6);

@@ -584,8 +639,9 @@ impl ToolCard for EditFileToolCard {

            let mut container = v_flex()
                .p_3()
-                .gap_1p5()
+                .gap_1()
                .border_t_1()
+                .rounded_md()
                .border_color(border_color)
                .bg(cx.theme().colors().editor_background);

@@ -600,7 +656,7 @@ impl ToolCard for EditFileToolCard {
                    _ => div().w_1_2(),
                }
                .id("loading_div")
-                .h_2()
+                .h_1()
                .rounded_full()
                .bg(cx.theme().colors().element_active)
                .with_animation(
@@ -622,7 +678,7 @@ impl ToolCard for EditFileToolCard {
            .border_1()
            .when(failed, |card| card.border_dashed())
            .border_color(border_color)
-            .rounded_lg()
+            .rounded_md()
            .overflow_hidden()
            .child(codeblock_header)
            .when(failed && self.error_expanded, |card| {
@@ -676,16 +732,16 @@ impl ToolCard for EditFileToolCard {
                                |editor_container| editor_container.child(gradient_overlay),
                            ),
                    )
-                    .when(is_collapsible, |editor_container| {
-                        editor_container.child(
+                    .when(is_collapsible, |card| {
+                        card.child(
                            h_flex()
                                .id(("expand-button", self.editor_unique_id))
                                .flex_none()
                                .cursor_pointer()
                                .h_5()
                                .justify_center()
-                                .rounded_b_md()
                                .border_t_1()
+                                .rounded_b_md()
                                .border_color(border_color)
                                .bg(cx.theme().colors().editor_background)
                                .hover(|style| {
@@ -766,9 +822,16 @@ async fn build_buffer_diff(
        })?
        .await;

+    let secondary_diff = cx.new(|cx| {
+        let mut diff = BufferDiff::new(&buffer, cx);
+        diff.set_snapshot(diff_snapshot.clone(), &buffer, cx);
+        diff
+    })?;
+
    cx.new(|cx| {
        let mut diff = BufferDiff::new(&buffer.text, cx);
-        diff.set_snapshot(diff_snapshot, &buffer.text, cx);
+        diff.set_snapshot(diff_snapshot, &buffer, cx);
+        diff.set_secondary_diff(secondary_diff);
        diff
    })
 }
@@ -776,7 +839,40 @@ async fn build_buffer_diff(
 #[cfg(test)]
 mod tests {
    use super::*;
+    use fs::FakeFs;
+    use gpui::TestAppContext;
+    use language_model::fake_provider::FakeLanguageModel;
    use serde_json::json;
+    use settings::SettingsStore;
+    use util::path;
+
+    #[gpui::test]
+    async fn test_edit_nonexistent_file(cx: &mut TestAppContext) {
+        init_test(cx);
+
+        let fs = FakeFs::new(cx.executor());
+        fs.insert_tree("/root", json!({})).await;
+        let project = Project::test(fs.clone(), [path!("/root").as_ref()], cx).await;
+        let action_log = cx.new(|_| ActionLog::new(project.clone()));
+        let model = Arc::new(FakeLanguageModel::default());
+        let result = cx
+            .update(|cx| {
+                let input = serde_json::to_value(EditFileToolInput {
+                    display_description: "Some edit".into(),
+                    path: "root/nonexistent_file.txt".into(),
+                    create_or_overwrite: false,
+                })
+                .unwrap();
+                Arc::new(EditFileTool)
+                    .run(input, &[], project.clone(), action_log, model, None, cx)
+                    .output
+            })
+            .await;
+        assert_eq!(
+            result.unwrap_err().to_string(),
+            "root/nonexistent_file.txt not found"
+        );
+    }

    #[test]
    fn still_streaming_ui_text_with_path() {
@@ -844,4 +940,13 @@ mod tests {
            DEFAULT_UI_TEXT,
        );
    }
+
+    fn init_test(cx: &mut TestAppContext) {
+        cx.update(|cx| {
+            let settings_store = SettingsStore::test(cx);
+            cx.set_global(settings_store);
+            language::init(cx);
+            Project::init_settings(cx);
+        });
+    }
 }
--- a/crates/assistant_tools/src/edit_file_tool/description.md
+++ b/crates/assistant_tools/src/edit_file_tool/description.md
@@ -1,4 +1,4 @@
-This is a tool for editing files. For moving or renaming files, you should generally use the `terminal` tool with the 'mv' command instead. For larger edits, use the `create_file` tool to overwrite files.
+This is a tool for creating a new file or editing an existing file. For moving or renaming files, you should generally use the `terminal` tool with the 'mv' command instead.

 Before using this tool:

@@ -6,40 +6,3 @@ Before using this tool:

 2. Verify the directory path is correct (only applicable when creating new files):
   - Use the `list_directory` tool to verify the parent directory exists and is the correct location
-
-To make a file edit, provide the following:
-1. path: The full path to the file you wish to modify in the project. This path must include the root directory in the project.
-2. old_string: The text to replace (must be unique within the file, and must match the file contents exactly, including all whitespace and indentation)
-3. new_string: The edited text, which will replace the old_string in the file.
-
-The tool will replace ONE occurrence of old_string with new_string in the specified file.
-
-CRITICAL REQUIREMENTS FOR USING THIS TOOL:
-
-1. UNIQUENESS: The old_string MUST uniquely identify the specific instance you want to change. This means:
-   - Include AT LEAST 3-5 lines of context BEFORE the change point
-   - Include AT LEAST 3-5 lines of context AFTER the change point
-   - Include all whitespace, indentation, and surrounding code exactly as it appears in the file
-
-2. SINGLE INSTANCE: This tool can only change ONE instance at a time. If you need to change multiple instances:
-   - Make separate calls to this tool for each instance
-   - Each call must uniquely identify its specific instance using extensive context
-
-3. VERIFICATION: Before using this tool:
-   - Check how many instances of the target text exist in the file
-   - If multiple instances exist, gather enough context to uniquely identify each one
-   - Plan separate tool calls for each instance
-
-WARNING: If you do not follow these requirements:
-   - The tool will fail if old_string matches multiple locations
-   - The tool will fail if old_string doesn't match exactly (including whitespace)
-   - You may change the wrong instance if you don't include enough context
-
-When making edits:
-   - Ensure the edit results in idiomatic, correct code
-   - Do not leave the code in a broken state
-   - Always use fully-qualified project paths (starting with the name of one of the project's root directories)
-
-If you want to create a new file, use the `create_file` tool instead of this tool. Don't pass an empty `old_string`.
-
-Remember: when making multiple file edits in a row to the same file, you should prefer to send all edits in a single message with multiple calls to this tool, rather than multiple messages with a single call each.
--- a/crates/assistant_tools/src/fetch_tool.rs
+++ b/crates/assistant_tools/src/fetch_tool.rs
@@ -9,7 +9,7 @@ use futures::AsyncReadExt as _;
 use gpui::{AnyWindowHandle, App, AppContext as _, Entity, Task};
 use html_to_markdown::{TagHandler, convert_html_to_markdown, markdown};
 use http_client::{AsyncBody, HttpClientWithUrl};
-use language_model::{LanguageModelRequestMessage, LanguageModelToolSchemaFormat};
+use language_model::{LanguageModel, LanguageModelRequestMessage, LanguageModelToolSchemaFormat};
 use project::Project;
 use schemars::JsonSchema;
 use serde::{Deserialize, Serialize};
@@ -145,6 +145,7 @@ impl Tool for FetchTool {
        _messages: &[LanguageModelRequestMessage],
        _project: Entity<Project>,
        _action_log: Entity<ActionLog>,
+        _model: Arc<dyn LanguageModel>,
        _window: Option<AnyWindowHandle>,
        cx: &mut App,
    ) -> ToolResult {
@@ -166,7 +167,7 @@ impl Tool for FetchTool {
                    bail!("no textual content found");
                }

-                Ok(text)
+                Ok(text.into())
            })
            .into()
    }
--- a/crates/assistant_tools/src/find_path_tool.rs
+++ b/crates/assistant_tools/src/find_path_tool.rs
@@ -7,7 +7,7 @@ use gpui::{
    AnyWindowHandle, App, AppContext, Context, Entity, IntoElement, Task, WeakEntity, Window,
 };
 use language;
-use language_model::{LanguageModelRequestMessage, LanguageModelToolSchemaFormat};
+use language_model::{LanguageModel, LanguageModelRequestMessage, LanguageModelToolSchemaFormat};
 use project::Project;
 use schemars::JsonSchema;
 use serde::{Deserialize, Serialize};
@@ -76,6 +76,7 @@ impl Tool for FindPathTool {
        _messages: &[LanguageModelRequestMessage],
        project: Entity<Project>,
        _action_log: Entity<ActionLog>,
+        _model: Arc<dyn LanguageModel>,
        _window: Option<AnyWindowHandle>,
        cx: &mut App,
    ) -> ToolResult {
@@ -98,7 +99,7 @@ impl Tool for FindPathTool {
            sender.send(paginated_matches.to_vec()).log_err();

            if matches.is_empty() {
-                Ok("No matches found".to_string())
+                Ok("No matches found".to_string().into())
            } else {
                let mut message = format!("Found {} total matches.", matches.len());
                if matches.len() > RESULTS_PER_PAGE {
@@ -113,7 +114,7 @@ impl Tool for FindPathTool {
                for mat in matches.into_iter().skip(offset).take(RESULTS_PER_PAGE) {
                    write!(&mut message, "\n{}", mat.display()).unwrap();
                }
-                Ok(message)
+                Ok(message.into())
            }
        });

--- a/crates/assistant_tools/src/find_replace_tool/description.md
+++ b/crates/assistant_tools/src/find_replace_tool/description.md
@@ -1,13 +0,0 @@
-Find one unique part of a file in the project and replace that text with new text.
-
-This tool is the preferred way to make edits to files *except* when making a rename. When making a rename specifically, the rename tool must always be used instead.
-
-If you have multiple edits to make, including edits across multiple files, then make a plan to respond with a single message containing a batch of calls to this tool - one call for each find/replace operation.
-
-You should only use this tool when you want to edit a subset of a file's contents, but not the entire file. You should not use this tool when you want to replace the entire contents of a file with completely different contents. You also should not use this tool when you want to move or rename a file. You absolutely must NEVER use this tool to create new files from scratch. If you ever consider using this tool to create a new file from scratch, for any reason, instead you must reconsider and choose a different approach.
-
-DO NOT call this tool until the code to be edited appears in the conversation! You must use another tool to read the file's contents into the conversation, or ask the user to add it to context first.
-
-Never call this tool with identical "find" and "replace" strings. Instead, stop and think about what you actually want to do.
-
-REMEMBER: You can use this tool after you just used the `create_file` tool. It's better to edit the file you just created than to recreate a new file from scratch.
--- a/crates/assistant_tools/src/grep_tool.rs
+++ b/crates/assistant_tools/src/grep_tool.rs
@@ -4,7 +4,7 @@ use assistant_tool::{ActionLog, Tool, ToolResult};
 use futures::StreamExt;
 use gpui::{AnyWindowHandle, App, Entity, Task};
 use language::{OffsetRangeExt, ParseStatus, Point};
-use language_model::{LanguageModelRequestMessage, LanguageModelToolSchemaFormat};
+use language_model::{LanguageModel, LanguageModelRequestMessage, LanguageModelToolSchemaFormat};
 use project::{
    Project,
    search::{SearchQuery, SearchResult},
@@ -99,6 +99,7 @@ impl Tool for GrepTool {
        _messages: &[LanguageModelRequestMessage],
        project: Entity<Project>,
        _action_log: Entity<ActionLog>,
+        _model: Arc<dyn LanguageModel>,
        _window: Option<AnyWindowHandle>,
        cx: &mut App,
    ) -> ToolResult {
@@ -260,16 +261,16 @@ impl Tool for GrepTool {
            }

            if matches_found == 0 {
-                Ok("No matches found".to_string())
+                Ok("No matches found".to_string().into())
            } else if has_more_matches {
                Ok(format!(
                    "Showing matches {}-{} (there were more matches found; use offset: {} to see next page):\n{output}",
                    input.offset + 1,
                    input.offset + matches_found,
                    input.offset + RESULTS_PER_PAGE,
-                ))
+                ).into())
            } else {
-                Ok(format!("Found {matches_found} matches:\n{output}"))
+                Ok(format!("Found {matches_found} matches:\n{output}").into())
            }
        }).into()
    }
@@ -281,6 +282,7 @@ mod tests {
    use assistant_tool::Tool;
    use gpui::{AppContext, TestAppContext};
    use language::{Language, LanguageConfig, LanguageMatcher};
+    use language_model::fake_provider::FakeLanguageModel;
    use project::{FakeFs, Project};
    use settings::SettingsStore;
    use unindent::Unindent;
@@ -743,14 +745,15 @@ mod tests {
    ) -> String {
        let tool = Arc::new(GrepTool);
        let action_log = cx.new(|_cx| ActionLog::new(project.clone()));
-        let task = cx.update(|cx| tool.run(input, &[], project, action_log, None, cx));
+        let model = Arc::new(FakeLanguageModel::default());
+        let task = cx.update(|cx| tool.run(input, &[], project, action_log, model, None, cx));

        match task.output.await {
            Ok(result) => {
                if cfg!(windows) {
-                    result.replace("root\\", "root/")
+                    result.content.replace("root\\", "root/")
                } else {
-                    result
+                    result.content
                }
            }
            Err(e) => panic!("Failed to run grep tool: {}", e),
--- a/crates/assistant_tools/src/list_directory_tool.rs
+++ b/crates/assistant_tools/src/list_directory_tool.rs
@@ -2,7 +2,7 @@ use crate::schema::json_schema_for;
 use anyhow::{Result, anyhow};
 use assistant_tool::{ActionLog, Tool, ToolResult};
 use gpui::{AnyWindowHandle, App, Entity, Task};
-use language_model::{LanguageModelRequestMessage, LanguageModelToolSchemaFormat};
+use language_model::{LanguageModel, LanguageModelRequestMessage, LanguageModelToolSchemaFormat};
 use project::Project;
 use schemars::JsonSchema;
 use serde::{Deserialize, Serialize};
@@ -76,6 +76,7 @@ impl Tool for ListDirectoryTool {
        _messages: &[LanguageModelRequestMessage],
        project: Entity<Project>,
        _action_log: Entity<ActionLog>,
+        _model: Arc<dyn LanguageModel>,
        _window: Option<AnyWindowHandle>,
        cx: &mut App,
    ) -> ToolResult {
@@ -102,7 +103,7 @@ impl Tool for ListDirectoryTool {
                .collect::<Vec<_>>()
                .join("\n");

-            return Task::ready(Ok(output)).into();
+            return Task::ready(Ok(output.into())).into();
        }

        let Some(project_path) = project.read(cx).find_project_path(&input.path, cx) else {
@@ -134,8 +135,8 @@ impl Tool for ListDirectoryTool {
            .unwrap();
        }
        if output.is_empty() {
-            return Task::ready(Ok(format!("{} is empty.", input.path))).into();
+            return Task::ready(Ok(format!("{} is empty.", input.path).into())).into();
        }
-        Task::ready(Ok(output)).into()
+        Task::ready(Ok(output.into())).into()
    }
 }
--- a/crates/assistant_tools/src/move_path_tool.rs
+++ b/crates/assistant_tools/src/move_path_tool.rs
@@ -2,7 +2,7 @@ use crate::schema::json_schema_for;
 use anyhow::{Result, anyhow};
 use assistant_tool::{ActionLog, Tool, ToolResult};
 use gpui::{AnyWindowHandle, App, AppContext, Entity, Task};
-use language_model::{LanguageModelRequestMessage, LanguageModelToolSchemaFormat};
+use language_model::{LanguageModel, LanguageModelRequestMessage, LanguageModelToolSchemaFormat};
 use project::Project;
 use schemars::JsonSchema;
 use serde::{Deserialize, Serialize};
@@ -89,6 +89,7 @@ impl Tool for MovePathTool {
        _messages: &[LanguageModelRequestMessage],
        project: Entity<Project>,
        _action_log: Entity<ActionLog>,
+        _model: Arc<dyn LanguageModel>,
        _window: Option<AnyWindowHandle>,
        cx: &mut App,
    ) -> ToolResult {
@@ -117,10 +118,9 @@ impl Tool for MovePathTool {

        cx.background_spawn(async move {
            match rename_task.await {
-                Ok(_) => Ok(format!(
-                    "Moved {} to {}",
-                    input.source_path, input.destination_path
-                )),
+                Ok(_) => {
+                    Ok(format!("Moved {} to {}", input.source_path, input.destination_path).into())
+                }
                Err(err) => Err(anyhow!(
                    "Failed to move {} to {}: {}",
                    input.source_path,
--- a/crates/assistant_tools/src/now_tool.rs
+++ b/crates/assistant_tools/src/now_tool.rs
@@ -5,7 +5,7 @@ use anyhow::{Result, anyhow};
 use assistant_tool::{ActionLog, Tool, ToolResult};
 use chrono::{Local, Utc};
 use gpui::{AnyWindowHandle, App, Entity, Task};
-use language_model::{LanguageModelRequestMessage, LanguageModelToolSchemaFormat};
+use language_model::{LanguageModel, LanguageModelRequestMessage, LanguageModelToolSchemaFormat};
 use project::Project;
 use schemars::JsonSchema;
 use serde::{Deserialize, Serialize};
@@ -59,6 +59,7 @@ impl Tool for NowTool {
        _messages: &[LanguageModelRequestMessage],
        _project: Entity<Project>,
        _action_log: Entity<ActionLog>,
+        _model: Arc<dyn LanguageModel>,
        _window: Option<AnyWindowHandle>,
        _cx: &mut App,
    ) -> ToolResult {
@@ -73,6 +74,6 @@ impl Tool for NowTool {
        };
        let text = format!("The current datetime is {now}.");

-        Task::ready(Ok(text)).into()
+        Task::ready(Ok(text.into())).into()
    }
 }
--- a/crates/assistant_tools/src/open_tool.rs
+++ b/crates/assistant_tools/src/open_tool.rs
@@ -2,7 +2,7 @@ use crate::schema::json_schema_for;
 use anyhow::{Context as _, Result, anyhow};
 use assistant_tool::{ActionLog, Tool, ToolResult};
 use gpui::{AnyWindowHandle, App, AppContext, Entity, Task};
-use language_model::{LanguageModelRequestMessage, LanguageModelToolSchemaFormat};
+use language_model::{LanguageModel, LanguageModelRequestMessage, LanguageModelToolSchemaFormat};
 use project::Project;
 use schemars::JsonSchema;
 use serde::{Deserialize, Serialize};
@@ -52,6 +52,7 @@ impl Tool for OpenTool {
        _messages: &[LanguageModelRequestMessage],
        project: Entity<Project>,
        _action_log: Entity<ActionLog>,
+        _model: Arc<dyn LanguageModel>,
        _window: Option<AnyWindowHandle>,
        cx: &mut App,
    ) -> ToolResult {
@@ -70,7 +71,7 @@ impl Tool for OpenTool {
            }
            .context("Failed to open URL or file path")?;

-            Ok(format!("Successfully opened {}", input.path_or_url))
+            Ok(format!("Successfully opened {}", input.path_or_url).into())
        })
        .into()
    }
--- a/crates/assistant_tools/src/read_file_tool.rs
+++ b/crates/assistant_tools/src/read_file_tool.rs
@@ -7,7 +7,7 @@ use gpui::{AnyWindowHandle, App, Entity, Task};
 use indoc::formatdoc;
 use itertools::Itertools;
 use language::{Anchor, Point};
-use language_model::{LanguageModelRequestMessage, LanguageModelToolSchemaFormat};
+use language_model::{LanguageModel, LanguageModelRequestMessage, LanguageModelToolSchemaFormat};
 use project::{AgentLocation, Project};
 use schemars::JsonSchema;
 use serde::{Deserialize, Serialize};
@@ -86,6 +86,7 @@ impl Tool for ReadFileTool {
        _messages: &[LanguageModelRequestMessage],
        project: Entity<Project>,
        action_log: Entity<ActionLog>,
+        _model: Arc<dyn LanguageModel>,
        _window: Option<AnyWindowHandle>,
        cx: &mut App,
    ) -> ToolResult {
@@ -97,27 +98,22 @@ impl Tool for ReadFileTool {
        let Some(project_path) = project.read(cx).find_project_path(&input.path, cx) else {
            return Task::ready(Err(anyhow!("Path {} not found in project", &input.path))).into();
        };
-        let Some(worktree) = project
-            .read(cx)
-            .worktree_for_id(project_path.worktree_id, cx)
-        else {
-            return Task::ready(Err(anyhow!("Worktree not found for project path"))).into();
-        };
-        let exists = worktree.update(cx, |worktree, cx| {
-            worktree.file_exists(&project_path.path, cx)
-        });

        let file_path = input.path.clone();
        cx.spawn(async move |cx| {
-            if !exists.await? {
-                return Err(anyhow!("{} not found", file_path));
-            }
-
            let buffer = cx
                .update(|cx| {
                    project.update(cx, |project, cx| project.open_buffer(project_path, cx))
                })?
                .await?;
+            if buffer.read_with(cx, |buffer, _| {
+                buffer
+                    .file()
+                    .as_ref()
+                    .map_or(true, |file| !file.disk_state().exists())
+            })? {
+                return Err(anyhow!("{} not found", file_path));
+            }

            project.update(cx, |project, cx| {
                project.set_agent_location(
@@ -145,14 +141,18 @@ impl Tool for ReadFileTool {
                    let lines = text.split('\n').skip(start_row as usize);
                    if let Some(end) = input.end_line {
                        let count = end.saturating_sub(start).saturating_add(1); // Ensure at least 1 line
-                        Itertools::intersperse(lines.take(count as usize), "\n").collect()
+                        Itertools::intersperse(lines.take(count as usize), "\n")
+                            .collect::<String>()
+                            .into()
                    } else {
-                        Itertools::intersperse(lines, "\n").collect()
+                        Itertools::intersperse(lines, "\n")
+                            .collect::<String>()
+                            .into()
                    }
                })?;

                action_log.update(cx, |log, cx| {
-                    log.track_buffer(buffer.clone(), cx);
+                    log.buffer_read(buffer.clone(), cx);
                })?;

                if let Some(anchor) = anchor {
@@ -177,22 +177,27 @@ impl Tool for ReadFileTool {
                    let result = buffer.read_with(cx, |buffer, _cx| buffer.text())?;

                    action_log.update(cx, |log, cx| {
-                        log.track_buffer(buffer, cx);
+                        log.buffer_read(buffer, cx);
                    })?;

-                    Ok(result)
+                    Ok(result.into())
                } else {
                    // File is too big, so return the outline
                    // and a suggestion to read again with line numbers.
-                    let outline = outline::file_outline(project, file_path, action_log, None, cx).await?;
+                    let outline =
+                        outline::file_outline(project, file_path, action_log, None, cx).await?;
                    Ok(formatdoc! {"
-                        This file was too big to read all at once. Here is an outline of its symbols:
+                        This file was too big to read all at once.
+
+                        Here is an outline of its symbols:

                        {outline}

-                        Using the line numbers in this outline, you can call this tool again while specifying
-                        the start_line and end_line fields to see the implementations of symbols in the outline."
-                    })
+                        Using the line numbers in this outline, you can call this tool again
+                        while specifying the start_line and end_line fields to see the
+                        implementations of symbols in the outline."
+                    }
+                    .into())
                }
            }
        })
@@ -205,6 +210,7 @@ mod test {
    use super::*;
    use gpui::{AppContext, TestAppContext};
    use language::{Language, LanguageConfig, LanguageMatcher};
+    use language_model::fake_provider::FakeLanguageModel;
    use project::{FakeFs, Project};
    use serde_json::json;
    use settings::SettingsStore;
@@ -218,13 +224,14 @@ mod test {
        fs.insert_tree("/root", json!({})).await;
        let project = Project::test(fs.clone(), [path!("/root").as_ref()], cx).await;
        let action_log = cx.new(|_| ActionLog::new(project.clone()));
+        let model = Arc::new(FakeLanguageModel::default());
        let result = cx
            .update(|cx| {
                let input = json!({
                    "path": "root/nonexistent_file.txt"
                });
                Arc::new(ReadFileTool)
-                    .run(input, &[], project.clone(), action_log, None, cx)
+                    .run(input, &[], project.clone(), action_log, model, None, cx)
                    .output
            })
            .await;
@@ -248,17 +255,18 @@ mod test {
        .await;
        let project = Project::test(fs.clone(), [path!("/root").as_ref()], cx).await;
        let action_log = cx.new(|_| ActionLog::new(project.clone()));
+        let model = Arc::new(FakeLanguageModel::default());
        let result = cx
            .update(|cx| {
                let input = json!({
                    "path": "root/small_file.txt"
                });
                Arc::new(ReadFileTool)
-                    .run(input, &[], project.clone(), action_log, None, cx)
+                    .run(input, &[], project.clone(), action_log, model, None, cx)
                    .output
            })
            .await;
-        assert_eq!(result.unwrap(), "This is a small file content");
+        assert_eq!(result.unwrap().content, "This is a small file content");
    }

    #[gpui::test]
@@ -277,6 +285,7 @@ mod test {
        let language_registry = project.read_with(cx, |project, _| project.languages().clone());
        language_registry.add(Arc::new(rust_lang()));
        let action_log = cx.new(|_| ActionLog::new(project.clone()));
+        let model = Arc::new(FakeLanguageModel::default());

        let result = cx
            .update(|cx| {
@@ -284,13 +293,21 @@ mod test {
                    "path": "root/large_file.rs"
                });
                Arc::new(ReadFileTool)
-                    .run(input, &[], project.clone(), action_log.clone(), None, cx)
+                    .run(
+                        input,
+                        &[],
+                        project.clone(),
+                        action_log.clone(),
+                        model.clone(),
+                        None,
+                        cx,
+                    )
                    .output
            })
            .await;
        let content = result.unwrap();
        assert_eq!(
-            content.lines().skip(2).take(6).collect::<Vec<_>>(),
+            content.lines().skip(4).take(6).collect::<Vec<_>>(),
            vec![
                "struct Test0 [L1-4]",
                " a [L2]",
@@ -308,7 +325,7 @@ mod test {
                    "offset": 1
                });
                Arc::new(ReadFileTool)
-                    .run(input, &[], project.clone(), action_log, None, cx)
+                    .run(input, &[], project.clone(), action_log, model, None, cx)
                    .output
            })
            .await;
@@ -325,7 +342,7 @@ mod test {
        pretty_assertions::assert_eq!(
            content
                .lines()
-                .skip(2)
+                .skip(4)
                .take(expected_content.len())
                .collect::<Vec<_>>(),
            expected_content
@@ -346,6 +363,7 @@ mod test {
        .await;
        let project = Project::test(fs.clone(), [path!("/root").as_ref()], cx).await;
        let action_log = cx.new(|_| ActionLog::new(project.clone()));
+        let model = Arc::new(FakeLanguageModel::default());
        let result = cx
            .update(|cx| {
                let input = json!({
@@ -354,11 +372,11 @@ mod test {
                    "end_line": 4
                });
                Arc::new(ReadFileTool)
-                    .run(input, &[], project.clone(), action_log, None, cx)
+                    .run(input, &[], project.clone(), action_log, model, None, cx)
                    .output
            })
            .await;
-        assert_eq!(result.unwrap(), "Line 2\nLine 3\nLine 4");
+        assert_eq!(result.unwrap().content, "Line 2\nLine 3\nLine 4");
    }

    #[gpui::test]
@@ -375,6 +393,7 @@ mod test {
        .await;
        let project = Project::test(fs.clone(), [path!("/root").as_ref()], cx).await;
        let action_log = cx.new(|_| ActionLog::new(project.clone()));
+        let model = Arc::new(FakeLanguageModel::default());

        // start_line of 0 should be treated as 1
        let result = cx
@@ -385,11 +404,19 @@ mod test {
                    "end_line": 2
                });
                Arc::new(ReadFileTool)
-                    .run(input, &[], project.clone(), action_log.clone(), None, cx)
+                    .run(
+                        input,
+                        &[],
+                        project.clone(),
+                        action_log.clone(),
+                        model.clone(),
+                        None,
+                        cx,
+                    )
                    .output
            })
            .await;
-        assert_eq!(result.unwrap(), "Line 1\nLine 2");
+        assert_eq!(result.unwrap().content, "Line 1\nLine 2");

        // end_line of 0 should result in at least 1 line
        let result = cx
@@ -400,11 +427,19 @@ mod test {
                    "end_line": 0
                });
                Arc::new(ReadFileTool)
-                    .run(input, &[], project.clone(), action_log.clone(), None, cx)
+                    .run(
+                        input,
+                        &[],
+                        project.clone(),
+                        action_log.clone(),
+                        model.clone(),
+                        None,
+                        cx,
+                    )
                    .output
            })
            .await;
-        assert_eq!(result.unwrap(), "Line 1");
+        assert_eq!(result.unwrap().content, "Line 1");

        // when start_line > end_line, should still return at least 1 line
        let result = cx
@@ -415,11 +450,11 @@ mod test {
                    "end_line": 2
                });
                Arc::new(ReadFileTool)
-                    .run(input, &[], project.clone(), action_log, None, cx)
+                    .run(input, &[], project.clone(), action_log, model, None, cx)
                    .output
            })
            .await;
-        assert_eq!(result.unwrap(), "Line 3");
+        assert_eq!(result.unwrap().content, "Line 3");
    }

    fn init_test(cx: &mut TestAppContext) {
--- a/crates/assistant_tools/src/replace.rs
+++ b/crates/assistant_tools/src/replace.rs
@@ -1,872 +0,0 @@
-use language::{BufferSnapshot, Diff, Point, ToOffset};
-use project::search::SearchQuery;
-use std::iter;
-use util::{ResultExt as _, paths::PathMatcher};
-
-/// Performs an exact string replacement in a buffer, requiring precise character-for-character matching.
-/// Uses the search functionality to locate the first occurrence of the exact string.
-/// Returns None if no exact match is found in the buffer.
-pub async fn replace_exact(old: &str, new: &str, snapshot: &BufferSnapshot) -> Option<Diff> {
-    let query = SearchQuery::text(
-        old,
-        false,
-        true,
-        true,
-        PathMatcher::new(iter::empty::<&str>()).ok()?,
-        PathMatcher::new(iter::empty::<&str>()).ok()?,
-        false,
-        None,
-    )
-    .log_err()?;
-
-    let matches = query.search(&snapshot, None).await;
-
-    if matches.is_empty() {
-        return None;
-    }
-
-    let edit_range = matches[0].clone();
-    let diff = language::text_diff(&old, &new);
-
-    let edits = diff
-        .into_iter()
-        .map(|(old_range, text)| {
-            let start = edit_range.start + old_range.start;
-            let end = edit_range.start + old_range.end;
-            (start..end, text)
-        })
-        .collect::<Vec<_>>();
-
-    let diff = language::Diff {
-        base_version: snapshot.version().clone(),
-        line_ending: snapshot.line_ending(),
-        edits,
-    };
-
-    Some(diff)
-}
-
-/// Performs a replacement that's indentation-aware - matches text content ignoring leading whitespace differences.
-/// When replacing, preserves the indentation level found in the buffer at each matching line.
-/// Returns None if no match found or if indentation is offset inconsistently across matched lines.
-pub fn replace_with_flexible_indent(old: &str, new: &str, buffer: &BufferSnapshot) -> Option<Diff> {
-    let (old_lines, old_min_indent) = lines_with_min_indent(old);
-    let (new_lines, new_min_indent) = lines_with_min_indent(new);
-    let min_indent = old_min_indent.min(new_min_indent);
-
-    let old_lines = drop_lines_prefix(&old_lines, min_indent);
-    let new_lines = drop_lines_prefix(&new_lines, min_indent);
-
-    let max_row = buffer.max_point().row;
-
-    'windows: for start_row in 0..max_row + 1 {
-        let end_row = start_row + old_lines.len().saturating_sub(1) as u32;
-
-        if end_row > max_row {
-            // The buffer ends before fully matching the pattern
-            return None;
-        }
-
-        let start_point = Point::new(start_row, 0);
-        let end_point = Point::new(end_row, buffer.line_len(end_row));
-        let range = start_point.to_offset(buffer)..end_point.to_offset(buffer);
-
-        let window_text = buffer.text_for_range(range.clone());
-        let mut window_lines = window_text.lines();
-        let mut old_lines_iter = old_lines.iter();
-
-        let mut common_mismatch = None;
-
-        #[derive(Eq, PartialEq)]
-        enum Mismatch {
-            OverIndented(String),
-            UnderIndented(String),
-        }
-
-        while let (Some(window_line), Some(old_line)) = (window_lines.next(), old_lines_iter.next())
-        {
-            let line_trimmed = window_line.trim_start();
-
-            if line_trimmed != old_line.trim_start() {
-                continue 'windows;
-            }
-
-            if line_trimmed.is_empty() {
-                continue;
-            }
-
-            let line_mismatch = if window_line.len() > old_line.len() {
-                let prefix = window_line[..window_line.len() - old_line.len()].to_string();
-                Mismatch::UnderIndented(prefix)
-            } else {
-                let prefix = old_line[..old_line.len() - window_line.len()].to_string();
-                Mismatch::OverIndented(prefix)
-            };
-
-            match &common_mismatch {
-                Some(common_mismatch) if common_mismatch != &line_mismatch => {
-                    continue 'windows;
-                }
-                Some(_) => (),
-                None => common_mismatch = Some(line_mismatch),
-            }
-        }
-
-        if let Some(common_mismatch) = &common_mismatch {
-            let line_ending = buffer.line_ending();
-            let replacement = new_lines
-                .iter()
-                .map(|new_line| {
-                    if new_line.trim().is_empty() {
-                        new_line.to_string()
-                    } else {
-                        match common_mismatch {
-                            Mismatch::UnderIndented(prefix) => prefix.to_string() + new_line,
-                            Mismatch::OverIndented(prefix) => new_line
-                                .strip_prefix(prefix)
-                                .unwrap_or(new_line)
-                                .to_string(),
-                        }
-                    }
-                })
-                .collect::<Vec<_>>()
-                .join(line_ending.as_str());
-
-            let diff = Diff {
-                base_version: buffer.version().clone(),
-                line_ending,
-                edits: vec![(range, replacement.into())],
-            };
-
-            return Some(diff);
-        }
-    }
-
-    None
-}
-
-fn drop_lines_prefix<'a>(lines: &'a [&str], prefix_len: usize) -> Vec<&'a str> {
-    lines
-        .iter()
-        .map(|line| line.get(prefix_len..).unwrap_or(""))
-        .collect()
-}
-
-fn lines_with_min_indent(input: &str) -> (Vec<&str>, usize) {
-    let mut lines = Vec::new();
-    let mut min_indent: Option<usize> = None;
-
-    for line in input.lines() {
-        lines.push(line);
-        if !line.trim().is_empty() {
-            let indent = line.len() - line.trim_start().len();
-            min_indent = Some(min_indent.map_or(indent, |m| m.min(indent)));
-        }
-    }
-
-    (lines, min_indent.unwrap_or(0))
-}
-
-#[cfg(test)]
-mod replace_exact_tests {
-    use super::*;
-    use gpui::TestAppContext;
-    use gpui::prelude::*;
-
-    #[gpui::test]
-    async fn basic(cx: &mut TestAppContext) {
-        let result = test_replace_exact(cx, "let x = 41;", "let x = 41;", "let x = 42;").await;
-        assert_eq!(result, Some("let x = 42;".to_string()));
-    }
-
-    #[gpui::test]
-    async fn no_match(cx: &mut TestAppContext) {
-        let result = test_replace_exact(cx, "let x = 41;", "let y = 42;", "let y = 43;").await;
-        assert_eq!(result, None);
-    }
-
-    #[gpui::test]
-    async fn multi_line(cx: &mut TestAppContext) {
-        let whole = "fn example() {\n    let x = 41;\n    println!(\"x = {}\", x);\n}";
-        let old_text = "    let x = 41;\n    println!(\"x = {}\", x);";
-        let new_text = "    let x = 42;\n    println!(\"x = {}\", x);";
-        let result = test_replace_exact(cx, whole, old_text, new_text).await;
-        assert_eq!(
-            result,
-            Some("fn example() {\n    let x = 42;\n    println!(\"x = {}\", x);\n}".to_string())
-        );
-    }
-
-    #[gpui::test]
-    async fn multiple_occurrences(cx: &mut TestAppContext) {
-        let whole = "let x = 41;\nlet y = 41;\nlet z = 41;";
-        let result = test_replace_exact(cx, whole, "let x = 41;", "let x = 42;").await;
-        assert_eq!(
-            result,
-            Some("let x = 42;\nlet y = 41;\nlet z = 41;".to_string())
-        );
-    }
-
-    #[gpui::test]
-    async fn empty_buffer(cx: &mut TestAppContext) {
-        let result = test_replace_exact(cx, "", "let x = 41;", "let x = 42;").await;
-        assert_eq!(result, None);
-    }
-
-    #[gpui::test]
-    async fn partial_match(cx: &mut TestAppContext) {
-        let whole = "let x = 41; let y = 42;";
-        let result = test_replace_exact(cx, whole, "let x = 41", "let x = 42").await;
-        assert_eq!(result, Some("let x = 42; let y = 42;".to_string()));
-    }
-
-    #[gpui::test]
-    async fn whitespace_sensitive(cx: &mut TestAppContext) {
-        let result = test_replace_exact(cx, "let x = 41;", " let x = 41;", "let x = 42;").await;
-        assert_eq!(result, None);
-    }
-
-    #[gpui::test]
-    async fn entire_buffer(cx: &mut TestAppContext) {
-        let result = test_replace_exact(cx, "let x = 41;", "let x = 41;", "let x = 42;").await;
-        assert_eq!(result, Some("let x = 42;".to_string()));
-    }
-
-    async fn test_replace_exact(
-        cx: &mut TestAppContext,
-        whole: &str,
-        old: &str,
-        new: &str,
-    ) -> Option<String> {
-        let buffer = cx.new(|cx| language::Buffer::local(whole, cx));
-
-        let buffer_snapshot = buffer.read_with(cx, |buffer, _cx| buffer.snapshot());
-
-        let diff = replace_exact(old, new, &buffer_snapshot).await;
-        diff.map(|diff| {
-            buffer.update(cx, |buffer, cx| {
-                let _ = buffer.apply_diff(diff, cx);
-                buffer.text()
-            })
-        })
-    }
-}
-
-#[cfg(test)]
-mod flexible_indent_tests {
-    use super::*;
-    use gpui::TestAppContext;
-    use gpui::prelude::*;
-    use unindent::Unindent;
-
-    #[gpui::test]
-    fn test_underindented_single_line(cx: &mut TestAppContext) {
-        let cur = "        let a = 41;".to_string();
-        let old = "    let a = 41;".to_string();
-        let new = "    let a = 42;".to_string();
-        let exp = "        let a = 42;".to_string();
-
-        let result = test_replace_with_flexible_indent(cx, &cur, &old, &new);
-
-        assert_eq!(result, Some(exp.to_string()))
-    }
-
-    #[gpui::test]
-    fn test_overindented_single_line(cx: &mut TestAppContext) {
-        let cur = "    let a = 41;".to_string();
-        let old = "        let a = 41;".to_string();
-        let new = "        let a = 42;".to_string();
-        let exp = "    let a = 42;".to_string();
-
-        let result = test_replace_with_flexible_indent(cx, &cur, &old, &new);
-
-        assert_eq!(result, Some(exp.to_string()))
-    }
-
-    #[gpui::test]
-    fn test_underindented_multi_line(cx: &mut TestAppContext) {
-        let whole = r#"
-            fn test() {
-                let x = 5;
-                println!("x = {}", x);
-                let y = 10;
-            }
-        "#
-        .unindent();
-
-        let old = r#"
-            let x = 5;
-            println!("x = {}", x);
-        "#
-        .unindent();
-
-        let new = r#"
-            let x = 42;
-            println!("New value: {}", x);
-        "#
-        .unindent();
-
-        let expected = r#"
-            fn test() {
-                let x = 42;
-                println!("New value: {}", x);
-                let y = 10;
-            }
-        "#
-        .unindent();
-
-        assert_eq!(
-            test_replace_with_flexible_indent(cx, &whole, &old, &new),
-            Some(expected.to_string())
-        );
-    }
-
-    #[gpui::test]
-    fn test_overindented_multi_line(cx: &mut TestAppContext) {
-        let cur = r#"
-            fn foo() {
-                let a = 41;
-                let b = 3.13;
-            }
-        "#
-        .unindent();
-
-        // 6 space indent instead of 4
-        let old = "      let a = 41;\n      let b = 3.13;";
-        let new = "      let a = 42;\n      let b = 3.14;";
-
-        let expected = r#"
-            fn foo() {
-                let a = 42;
-                let b = 3.14;
-            }
-        "#
-        .unindent();
-
-        let result = test_replace_with_flexible_indent(cx, &cur, &old, &new);
-
-        assert_eq!(result, Some(expected.to_string()))
-    }
-
-    #[gpui::test]
-    fn test_replace_inconsistent_indentation(cx: &mut TestAppContext) {
-        let whole = r#"
-            fn test() {
-                if condition {
-                    println!("{}", 43);
-                }
-            }
-        "#
-        .unindent();
-
-        let old = r#"
-            if condition {
-            println!("{}", 43);
-        "#
-        .unindent();
-
-        let new = r#"
-            if condition {
-            println!("{}", 42);
-        "#
-        .unindent();
-
-        assert_eq!(
-            test_replace_with_flexible_indent(cx, &whole, &old, &new),
-            None
-        );
-    }
-
-    #[gpui::test]
-    fn test_replace_with_empty_lines(cx: &mut TestAppContext) {
-        // Test with empty lines
-        let whole = r#"
-            fn test() {
-                let x = 5;
-
-                println!("x = {}", x);
-            }
-        "#
-        .unindent();
-
-        let old = r#"
-            let x = 5;
-
-            println!("x = {}", x);
-        "#
-        .unindent();
-
-        let new = r#"
-            let x = 10;
-
-            println!("New x: {}", x);
-        "#
-        .unindent();
-
-        let expected = r#"
-            fn test() {
-                let x = 10;
-
-                println!("New x: {}", x);
-            }
-        "#
-        .unindent();
-
-        assert_eq!(
-            test_replace_with_flexible_indent(cx, &whole, &old, &new),
-            Some(expected.to_string())
-        );
-    }
-
-    #[gpui::test]
-    fn test_replace_no_match(cx: &mut TestAppContext) {
-        let whole = r#"
-            fn test() {
-                let x = 5;
-            }
-        "#
-        .unindent();
-
-        let old = r#"
-            let y = 10;
-        "#
-        .unindent();
-
-        let new = r#"
-            let y = 20;
-        "#
-        .unindent();
-
-        assert_eq!(
-            test_replace_with_flexible_indent(cx, &whole, &old, &new),
-            None
-        );
-    }
-
-    #[gpui::test]
-    fn test_replace_whole_ends_before_matching_old(cx: &mut TestAppContext) {
-        let whole = r#"
-            fn test() {
-                let x = 5;
-        "#
-        .unindent();
-
-        let old = r#"
-            let x = 5;
-            println!("x = {}", x);
-        "#
-        .unindent();
-
-        let new = r#"
-            let x = 10;
-            println!("x = {}", x);
-        "#
-        .unindent();
-
-        // Should return None because whole doesn't fully contain the old text
-        assert_eq!(
-            test_replace_with_flexible_indent(cx, &whole, &old, &new),
-            None
-        );
-    }
-
-    #[gpui::test]
-    fn test_replace_whole_is_shorter_than_old(cx: &mut TestAppContext) {
-        let whole = r#"
-            let x = 5;
-        "#
-        .unindent();
-
-        let old = r#"
-            let x = 5;
-            let y = 10;
-        "#
-        .unindent();
-
-        let new = r#"
-            let x = 5;
-            let y = 20;
-        "#
-        .unindent();
-
-        assert_eq!(
-            test_replace_with_flexible_indent(cx, &whole, &old, &new),
-            None
-        );
-    }
-
-    #[gpui::test]
-    fn test_replace_old_is_empty(cx: &mut TestAppContext) {
-        let whole = r#"
-            fn test() {
-                let x = 5;
-            }
-        "#
-        .unindent();
-
-        let old = "";
-        let new = r#"
-            let y = 10;
-        "#
-        .unindent();
-
-        assert_eq!(
-            test_replace_with_flexible_indent(cx, &whole, &old, &new),
-            None
-        );
-    }
-
-    #[gpui::test]
-    fn test_replace_whole_is_empty(cx: &mut TestAppContext) {
-        let whole = "";
-        let old = r#"
-            let x = 5;
-        "#
-        .unindent();
-
-        let new = r#"
-            let x = 10;
-        "#
-        .unindent();
-
-        assert_eq!(
-            test_replace_with_flexible_indent(cx, &whole, &old, &new),
-            None
-        );
-    }
-
-    #[test]
-    fn test_lines_with_min_indent() {
-        // Empty string
-        assert_eq!(lines_with_min_indent(""), (vec![], 0));
-
-        // Single line without indentation
-        assert_eq!(lines_with_min_indent("hello"), (vec!["hello"], 0));
-
-        // Multiple lines with no indentation
-        assert_eq!(
-            lines_with_min_indent("line1\nline2\nline3"),
-            (vec!["line1", "line2", "line3"], 0)
-        );
-
-        // Multiple lines with consistent indentation
-        assert_eq!(
-            lines_with_min_indent("  line1\n  line2\n  line3"),
-            (vec!["  line1", "  line2", "  line3"], 2)
-        );
-
-        // Multiple lines with varying indentation
-        assert_eq!(
-            lines_with_min_indent("    line1\n  line2\n      line3"),
-            (vec!["    line1", "  line2", "      line3"], 2)
-        );
-
-        // Lines with mixed indentation and empty lines
-        assert_eq!(
-            lines_with_min_indent("    line1\n\n  line2"),
-            (vec!["    line1", "", "  line2"], 2)
-        );
-    }
-
-    #[gpui::test]
-    fn test_replace_with_missing_indent_uneven_match(cx: &mut TestAppContext) {
-        let whole = r#"
-            fn test() {
-                if true {
-                        let x = 5;
-                        println!("x = {}", x);
-                }
-            }
-        "#
-        .unindent();
-
-        let old = r#"
-            let x = 5;
-            println!("x = {}", x);
-        "#
-        .unindent();
-
-        let new = r#"
-            let x = 42;
-            println!("x = {}", x);
-        "#
-        .unindent();
-
-        let expected = r#"
-            fn test() {
-                if true {
-                        let x = 42;
-                        println!("x = {}", x);
-                }
-            }
-        "#
-        .unindent();
-
-        assert_eq!(
-            test_replace_with_flexible_indent(cx, &whole, &old, &new),
-            Some(expected.to_string())
-        );
-    }
-
-    #[gpui::test]
-    fn test_replace_big_example(cx: &mut TestAppContext) {
-        let whole = r#"
-            #[cfg(test)]
-            mod tests {
-                use super::*;
-
-                #[test]
-                fn test_is_valid_age() {
-                    assert!(is_valid_age(0));
-                    assert!(!is_valid_age(151));
-                }
-            }
-        "#
-        .unindent();
-
-        let old = r#"
-            #[test]
-            fn test_is_valid_age() {
-                assert!(is_valid_age(0));
-                assert!(!is_valid_age(151));
-            }
-        "#
-        .unindent();
-
-        let new = r#"
-            #[test]
-            fn test_is_valid_age() {
-                assert!(is_valid_age(0));
-                assert!(!is_valid_age(151));
-            }
-
-            #[test]
-            fn test_group_people_by_age() {
-                let people = vec![
-                    Person::new("Young One", 5, "young@example.com").unwrap(),
-                    Person::new("Teen One", 15, "teen@example.com").unwrap(),
-                    Person::new("Teen Two", 18, "teen2@example.com").unwrap(),
-                    Person::new("Adult One", 25, "adult@example.com").unwrap(),
-                ];
-
-                let groups = group_people_by_age(&people);
-
-                assert_eq!(groups.get(&0).unwrap().len(), 1);  // One person in 0-9
-                assert_eq!(groups.get(&10).unwrap().len(), 2); // Two people in 10-19
-                assert_eq!(groups.get(&20).unwrap().len(), 1); // One person in 20-29
-            }
-        "#
-        .unindent();
-        let expected = r#"
-            #[cfg(test)]
-            mod tests {
-                use super::*;
-
-                #[test]
-                fn test_is_valid_age() {
-                    assert!(is_valid_age(0));
-                    assert!(!is_valid_age(151));
-                }
-
-                #[test]
-                fn test_group_people_by_age() {
-                    let people = vec![
-                        Person::new("Young One", 5, "young@example.com").unwrap(),
-                        Person::new("Teen One", 15, "teen@example.com").unwrap(),
-                        Person::new("Teen Two", 18, "teen2@example.com").unwrap(),
-                        Person::new("Adult One", 25, "adult@example.com").unwrap(),
-                    ];
-
-                    let groups = group_people_by_age(&people);
-
-                    assert_eq!(groups.get(&0).unwrap().len(), 1);  // One person in 0-9
-                    assert_eq!(groups.get(&10).unwrap().len(), 2); // Two people in 10-19
-                    assert_eq!(groups.get(&20).unwrap().len(), 1); // One person in 20-29
-                }
-            }
-        "#
-        .unindent();
-        assert_eq!(
-            test_replace_with_flexible_indent(cx, &whole, &old, &new),
-            Some(expected.to_string())
-        );
-    }
-
-    #[test]
-    fn test_drop_lines_prefix() {
-        // Empty array
-        assert_eq!(drop_lines_prefix(&[], 2), Vec::<&str>::new());
-
-        // Zero prefix length
-        assert_eq!(
-            drop_lines_prefix(&["line1", "line2"], 0),
-            vec!["line1", "line2"]
-        );
-
-        // Normal prefix drop
-        assert_eq!(
-            drop_lines_prefix(&["  line1", "  line2"], 2),
-            vec!["line1", "line2"]
-        );
-
-        // Prefix longer than some lines
-        assert_eq!(drop_lines_prefix(&["  line1", "a"], 2), vec!["line1", ""]);
-
-        // Prefix longer than all lines
-        assert_eq!(drop_lines_prefix(&["a", "b"], 5), vec!["", ""]);
-
-        // Mixed length lines
-        assert_eq!(
-            drop_lines_prefix(&["    line1", "  line2", "      line3"], 2),
-            vec!["  line1", "line2", "    line3"]
-        );
-    }
-
-    #[gpui::test]
-    async fn test_replace_exact_basic(cx: &mut TestAppContext) {
-        let buffer = cx.new(|cx| language::Buffer::local("let x = 41;", cx));
-        let snapshot = buffer.read_with(cx, |buffer, _cx| buffer.snapshot());
-
-        let diff = replace_exact("let x = 41;", "let x = 42;", &snapshot).await;
-        assert!(diff.is_some());
-
-        let diff = diff.unwrap();
-        assert_eq!(diff.edits.len(), 1);
-
-        let result = buffer.update(cx, |buffer, cx| {
-            let _ = buffer.apply_diff(diff, cx);
-            buffer.text()
-        });
-
-        assert_eq!(result, "let x = 42;");
-    }
-
-    #[gpui::test]
-    async fn test_replace_exact_no_match(cx: &mut TestAppContext) {
-        let buffer = cx.new(|cx| language::Buffer::local("let x = 41;", cx));
-        let snapshot = buffer.read_with(cx, |buffer, _cx| buffer.snapshot());
-
-        let diff = replace_exact("let y = 42;", "let y = 43;", &snapshot).await;
-        assert!(diff.is_none());
-    }
-
-    #[gpui::test]
-    async fn test_replace_exact_multi_line(cx: &mut TestAppContext) {
-        let buffer = cx.new(|cx| {
-            language::Buffer::local(
-                "fn example() {\n    let x = 41;\n    println!(\"x = {}\", x);\n}",
-                cx,
-            )
-        });
-        let snapshot = buffer.read_with(cx, |buffer, _cx| buffer.snapshot());
-
-        let old_text = "    let x = 41;\n    println!(\"x = {}\", x);";
-        let new_text = "    let x = 42;\n    println!(\"x = {}\", x);";
-        let diff = replace_exact(old_text, new_text, &snapshot).await;
-        assert!(diff.is_some());
-
-        let diff = diff.unwrap();
-        let result = buffer.update(cx, |buffer, cx| {
-            let _ = buffer.apply_diff(diff, cx);
-            buffer.text()
-        });
-
-        assert_eq!(
-            result,
-            "fn example() {\n    let x = 42;\n    println!(\"x = {}\", x);\n}"
-        );
-    }
-
-    #[gpui::test]
-    async fn test_replace_exact_multiple_occurrences(cx: &mut TestAppContext) {
-        let buffer =
-            cx.new(|cx| language::Buffer::local("let x = 41;\nlet y = 41;\nlet z = 41;", cx));
-        let snapshot = buffer.read_with(cx, |buffer, _cx| buffer.snapshot());
-
-        // Should replace only the first occurrence
-        let diff = replace_exact("let x = 41;", "let x = 42;", &snapshot).await;
-        assert!(diff.is_some());
-
-        let diff = diff.unwrap();
-        let result = buffer.update(cx, |buffer, cx| {
-            let _ = buffer.apply_diff(diff, cx);
-            buffer.text()
-        });
-
-        assert_eq!(result, "let x = 42;\nlet y = 41;\nlet z = 41;");
-    }
-
-    #[gpui::test]
-    async fn test_replace_exact_empty_buffer(cx: &mut TestAppContext) {
-        let buffer = cx.new(|cx| language::Buffer::local("", cx));
-        let snapshot = buffer.read_with(cx, |buffer, _cx| buffer.snapshot());
-
-        let diff = replace_exact("let x = 41;", "let x = 42;", &snapshot).await;
-        assert!(diff.is_none());
-    }
-
-    #[gpui::test]
-    async fn test_replace_exact_partial_match(cx: &mut TestAppContext) {
-        let buffer = cx.new(|cx| language::Buffer::local("let x = 41; let y = 42;", cx));
-        let snapshot = buffer.read_with(cx, |buffer, _cx| buffer.snapshot());
-
-        // Verify substring replacement actually works
-        let diff = replace_exact("let x = 41", "let x = 42", &snapshot).await;
-        assert!(diff.is_some());
-
-        let diff = diff.unwrap();
-        let result = buffer.update(cx, |buffer, cx| {
-            let _ = buffer.apply_diff(diff, cx);
-            buffer.text()
-        });
-
-        assert_eq!(result, "let x = 42; let y = 42;");
-    }
-
-    #[gpui::test]
-    async fn test_replace_exact_whitespace_sensitive(cx: &mut TestAppContext) {
-        let buffer = cx.new(|cx| language::Buffer::local("let x = 41;", cx));
-        let snapshot = buffer.read_with(cx, |buffer, _cx| buffer.snapshot());
-
-        let diff = replace_exact(" let x = 41;", "let x = 42;", &snapshot).await;
-        assert!(diff.is_none());
-    }
-
-    #[gpui::test]
-    async fn test_replace_exact_entire_buffer(cx: &mut TestAppContext) {
-        let buffer = cx.new(|cx| language::Buffer::local("let x = 41;", cx));
-        let snapshot = buffer.read_with(cx, |buffer, _cx| buffer.snapshot());
-
-        let diff = replace_exact("let x = 41;", "let x = 42;", &snapshot).await;
-        assert!(diff.is_some());
-
-        let diff = diff.unwrap();
-        let result = buffer.update(cx, |buffer, cx| {
-            let _ = buffer.apply_diff(diff, cx);
-            buffer.text()
-        });
-
-        assert_eq!(result, "let x = 42;");
-    }
-
-    fn test_replace_with_flexible_indent(
-        cx: &mut TestAppContext,
-        whole: &str,
-        old: &str,
-        new: &str,
-    ) -> Option<String> {
-        // Create a local buffer with the test content
-        let buffer = cx.new(|cx| language::Buffer::local(whole, cx));
-
-        // Get the buffer snapshot
-        let buffer_snapshot = buffer.read_with(cx, |buffer, _cx| buffer.snapshot());
-
-        // Call replace_flexible and transform the result
-        replace_with_flexible_indent(old, new, &buffer_snapshot).map(|diff| {
-            buffer.update(cx, |buffer, cx| {
-                let _ = buffer.apply_diff(diff, cx);
-                buffer.text()
-            })
-        })
-    }
-}
--- a/crates/assistant_tools/src/streaming_edit_file_tool.rs
+++ b/crates/assistant_tools/src/streaming_edit_file_tool.rs
@@ -1,355 +0,0 @@
-use crate::{
-    Templates,
-    edit_agent::{EditAgent, EditAgentOutputEvent},
-    edit_file_tool::EditFileToolCard,
-    schema::json_schema_for,
-};
-use anyhow::{Context as _, Result, anyhow};
-use assistant_tool::{ActionLog, AnyToolCard, Tool, ToolResult};
-use futures::StreamExt;
-use gpui::{AnyWindowHandle, App, AppContext, AsyncApp, Entity, Task};
-use indoc::formatdoc;
-use language_model::{
-    LanguageModelRegistry, LanguageModelRequestMessage, LanguageModelToolSchemaFormat,
-};
-use project::Project;
-use schemars::JsonSchema;
-use serde::{Deserialize, Serialize};
-use std::{path::PathBuf, sync::Arc};
-use ui::prelude::*;
-use util::ResultExt;
-
-pub struct StreamingEditFileTool;
-
-#[derive(Debug, Serialize, Deserialize, JsonSchema)]
-pub struct StreamingEditFileToolInput {
-    /// A one-line, user-friendly markdown description of the edit. This will be
-    /// shown in the UI and also passed to another model to perform the edit.
-    ///
-    /// Be terse, but also descriptive in what you want to achieve with this
-    /// edit. Avoid generic instructions.
-    ///
-    /// NEVER mention the file path in this description.
-    ///
-    /// <example>Fix API endpoint URLs</example>
-    /// <example>Update copyright year in `page_footer`</example>
-    ///
-    /// Make sure to include this field before all the others in the input object
-    /// so that we can display it immediately.
-    pub display_description: String,
-
-    /// The full path of the file to create or modify in the project.
-    ///
-    /// WARNING: When specifying which file path need changing, you MUST
-    /// start each path with one of the project's root directories.
-    ///
-    /// The following examples assume we have two root directories in the project:
-    /// - backend
-    /// - frontend
-    ///
-    /// <example>
-    /// `backend/src/main.rs`
-    ///
-    /// Notice how the file path starts with root-1. Without that, the path
-    /// would be ambiguous and the call would fail!
-    /// </example>
-    ///
-    /// <example>
-    /// `frontend/db.js`
-    /// </example>
-    pub path: PathBuf,
-
-    /// If true, this tool will recreate the file from scratch.
-    /// If false, this tool will produce granular edits to an existing file.
-    ///
-    /// When a file already exists or you just created it, always prefer editing
-    /// it as opposed to recreating it from scratch.
-    pub create_or_overwrite: bool,
-}
-
-#[derive(Debug, Serialize, Deserialize, JsonSchema)]
-struct PartialInput {
-    #[serde(default)]
-    path: String,
-    #[serde(default)]
-    display_description: String,
-}
-
-const DEFAULT_UI_TEXT: &str = "Editing file";
-
-impl Tool for StreamingEditFileTool {
-    fn name(&self) -> String {
-        "edit_file".into()
-    }
-
-    fn needs_confirmation(&self, _: &serde_json::Value, _: &App) -> bool {
-        false
-    }
-
-    fn description(&self) -> String {
-        include_str!("streaming_edit_file_tool/description.md").to_string()
-    }
-
-    fn icon(&self) -> IconName {
-        IconName::Pencil
-    }
-
-    fn input_schema(&self, format: LanguageModelToolSchemaFormat) -> Result<serde_json::Value> {
-        json_schema_for::<StreamingEditFileToolInput>(format)
-    }
-
-    fn ui_text(&self, input: &serde_json::Value) -> String {
-        match serde_json::from_value::<StreamingEditFileToolInput>(input.clone()) {
-            Ok(input) => input.display_description,
-            Err(_) => "Editing file".to_string(),
-        }
-    }
-
-    fn still_streaming_ui_text(&self, input: &serde_json::Value) -> String {
-        if let Some(input) = serde_json::from_value::<PartialInput>(input.clone()).ok() {
-            let description = input.display_description.trim();
-            if !description.is_empty() {
-                return description.to_string();
-            }
-
-            let path = input.path.trim();
-            if !path.is_empty() {
-                return path.to_string();
-            }
-        }
-
-        DEFAULT_UI_TEXT.to_string()
-    }
-
-    fn run(
-        self: Arc<Self>,
-        input: serde_json::Value,
-        messages: &[LanguageModelRequestMessage],
-        project: Entity<Project>,
-        action_log: Entity<ActionLog>,
-        window: Option<AnyWindowHandle>,
-        cx: &mut App,
-    ) -> ToolResult {
-        let input = match serde_json::from_value::<StreamingEditFileToolInput>(input) {
-            Ok(input) => input,
-            Err(err) => return Task::ready(Err(anyhow!(err))).into(),
-        };
-
-        let Some(project_path) = project.read(cx).find_project_path(&input.path, cx) else {
-            return Task::ready(Err(anyhow!(
-                "Path {} not found in project",
-                input.path.display()
-            )))
-            .into();
-        };
-        let Some(worktree) = project
-            .read(cx)
-            .worktree_for_id(project_path.worktree_id, cx)
-        else {
-            return Task::ready(Err(anyhow!("Worktree not found for project path"))).into();
-        };
-        let exists = worktree.update(cx, |worktree, cx| {
-            worktree.file_exists(&project_path.path, cx)
-        });
-
-        let card = window.and_then(|window| {
-            window
-                .update(cx, |_, window, cx| {
-                    cx.new(|cx| {
-                        EditFileToolCard::new(input.path.clone(), project.clone(), window, cx)
-                    })
-                })
-                .ok()
-        });
-
-        let card_clone = card.clone();
-        let messages = messages.to_vec();
-        let task = cx.spawn(async move |cx: &mut AsyncApp| {
-            if !input.create_or_overwrite && !exists.await? {
-                return Err(anyhow!("{} not found", input.path.display()));
-            }
-
-            let model = cx
-                .update(|cx| LanguageModelRegistry::read_global(cx).default_model())?
-                .context("default model not set")?
-                .model;
-            let edit_agent = EditAgent::new(model, project.clone(), action_log, Templates::new());
-
-            let buffer = project
-                .update(cx, |project, cx| {
-                    project.open_buffer(project_path.clone(), cx)
-                })?
-                .await?;
-
-            let old_snapshot = buffer.read_with(cx, |buffer, _cx| buffer.snapshot())?;
-            let old_text = cx
-                .background_spawn({
-                    let old_snapshot = old_snapshot.clone();
-                    async move { old_snapshot.text() }
-                })
-                .await;
-
-            let (output, mut events) = if input.create_or_overwrite {
-                edit_agent.overwrite(
-                    buffer.clone(),
-                    input.display_description.clone(),
-                    messages,
-                    cx,
-                )
-            } else {
-                edit_agent.edit(
-                    buffer.clone(),
-                    input.display_description.clone(),
-                    messages,
-                    cx,
-                )
-            };
-
-            let mut hallucinated_old_text = false;
-            while let Some(event) = events.next().await {
-                match event {
-                    EditAgentOutputEvent::Edited => {
-                        if let Some(card) = card_clone.as_ref() {
-                            let new_snapshot =
-                                buffer.read_with(cx, |buffer, _cx| buffer.snapshot())?;
-                            let new_text = cx
-                                .background_spawn({
-                                    let new_snapshot = new_snapshot.clone();
-                                    async move { new_snapshot.text() }
-                                })
-                                .await;
-                            card.update(cx, |card, cx| {
-                                card.set_diff(
-                                    project_path.path.clone(),
-                                    old_text.clone(),
-                                    new_text,
-                                    cx,
-                                );
-                            })
-                            .log_err();
-                        }
-                    }
-                    EditAgentOutputEvent::OldTextNotFound(_) => hallucinated_old_text = true,
-                }
-            }
-            output.await?;
-
-            project
-                .update(cx, |project, cx| project.save_buffer(buffer.clone(), cx))?
-                .await?;
-
-            let new_snapshot = buffer.read_with(cx, |buffer, _cx| buffer.snapshot())?;
-            let new_text = cx.background_spawn({
-                let new_snapshot = new_snapshot.clone();
-                async move { new_snapshot.text() }
-            });
-            let diff = cx.background_spawn(async move {
-                language::unified_diff(&old_snapshot.text(), &new_snapshot.text())
-            });
-            let (new_text, diff) = futures::join!(new_text, diff);
-
-            if let Some(card) = card_clone {
-                card.update(cx, |card, cx| {
-                    card.set_diff(project_path.path.clone(), old_text, new_text, cx);
-                })
-                .log_err();
-            }
-
-            let input_path = input.path.display();
-            if diff.is_empty() {
-                if hallucinated_old_text {
-                    Err(anyhow!(formatdoc! {"
-                        Some edits were produced but none of them could be applied.
-                        Read the relevant sections of {input_path} again so that
-                        I can perform the requested edits.
-                    "}))
-                } else {
-                    Ok("No edits were made.".to_string())
-                }
-            } else {
-                Ok(format!("Edited {}:\n\n```diff\n{}\n```", input_path, diff))
-            }
-        });
-
-        ToolResult {
-            output: task,
-            card: card.map(AnyToolCard::from),
-        }
-    }
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-    use serde_json::json;
-
-    #[test]
-    fn still_streaming_ui_text_with_path() {
-        let input = json!({
-            "path": "src/main.rs",
-            "display_description": "",
-            "old_string": "old code",
-            "new_string": "new code"
-        });
-
-        assert_eq!(
-            StreamingEditFileTool.still_streaming_ui_text(&input),
-            "src/main.rs"
-        );
-    }
-
-    #[test]
-    fn still_streaming_ui_text_with_description() {
-        let input = json!({
-            "path": "",
-            "display_description": "Fix error handling",
-            "old_string": "old code",
-            "new_string": "new code"
-        });
-
-        assert_eq!(
-            StreamingEditFileTool.still_streaming_ui_text(&input),
-            "Fix error handling",
-        );
-    }
-
-    #[test]
-    fn still_streaming_ui_text_with_path_and_description() {
-        let input = json!({
-            "path": "src/main.rs",
-            "display_description": "Fix error handling",
-            "old_string": "old code",
-            "new_string": "new code"
-        });
-
-        assert_eq!(
-            StreamingEditFileTool.still_streaming_ui_text(&input),
-            "Fix error handling",
-        );
-    }
-
-    #[test]
-    fn still_streaming_ui_text_no_path_or_description() {
-        let input = json!({
-            "path": "",
-            "display_description": "",
-            "old_string": "old code",
-            "new_string": "new code"
-        });
-
-        assert_eq!(
-            StreamingEditFileTool.still_streaming_ui_text(&input),
-            DEFAULT_UI_TEXT,
-        );
-    }
-
-    #[test]
-    fn still_streaming_ui_text_with_null() {
-        let input = serde_json::Value::Null;
-
-        assert_eq!(
-            StreamingEditFileTool.still_streaming_ui_text(&input),
-            DEFAULT_UI_TEXT,
-        );
-    }
-}
--- a/crates/assistant_tools/src/streaming_edit_file_tool/description.md
+++ b/crates/assistant_tools/src/streaming_edit_file_tool/description.md
@@ -1,8 +0,0 @@
-This is a tool for creating a new file or editing an existing file. For moving or renaming files, you should generally use the `terminal` tool with the 'mv' command instead.
-
-Before using this tool:
-
-1. Use the `read_file` tool to understand the file's contents and context
-
-2. Verify the directory path is correct (only applicable when creating new files):
-   - Use the `list_directory` tool to verify the parent directory exists and is the correct location
--- a/crates/assistant_tools/src/templates/edit_file_prompt.hbs
+++ b/crates/assistant_tools/src/templates/edit_file_prompt.hbs
@@ -31,8 +31,12 @@ NEW TEXT 3 HERE

 Rules for editing:

- `old_text` represents lines in the input file that will be replaced with `new_text`. `old_text` MUST exactly match the existing file content, character for character, including indentation.
- Always include enough context around the lines you want to replace in `old_text` such that it's impossible to mistake them for other lines.
+- `old_text` represents lines in the input file that will be replaced with `new_text`.
+- `old_text` MUST exactly match the existing file content, character for character, including indentation.
+- `old_text` MUST NEVER come from the outline, but from actual lines in the file.
+- Strive to be minimal in the lines you replace in `old_text`:
+  - If the lines you want to replace are unique, you MUST include just those in the `old_text`.
+  - If the lines you want to replace are NOT unique, you MUST include enough context around them in `old_text` to distinguish them from other lines.
 - If you want to replace many occurrences of the same text, repeat the same `old_text`/`new_text` pair multiple times and I will apply them sequentially, one occurrence at a time.
 - When reporting multiple edits, each edit assumes the previous one has already been applied! Therefore, you must ensure `old_text` doesn't reference text that has already been modified by a previous edit.
 - Don't explain the edits, just report them.
--- a/crates/assistant_tools/src/terminal_tool.rs
+++ b/crates/assistant_tools/src/terminal_tool.rs
@@ -1,11 +1,11 @@
 use crate::schema::json_schema_for;
-use anyhow::{Context as _, Result, anyhow};
+use anyhow::{Context as _, Result, anyhow, bail};
 use assistant_tool::{ActionLog, Tool, ToolCard, ToolResult, ToolUseStatus};
-use gpui::{
-    Animation, AnimationExt, AnyWindowHandle, App, AppContext, Empty, Entity, EntityId, Task,
-    Transformation, WeakEntity, Window, percentage,
-};
-use language_model::{LanguageModelRequestMessage, LanguageModelToolSchemaFormat};
+use futures::{FutureExt as _, future::Shared};
+use gpui::{AnyWindowHandle, App, AppContext, Empty, Entity, EntityId, Task, WeakEntity, Window};
+use language::LineEnding;
+use language_model::{LanguageModel, LanguageModelRequestMessage, LanguageModelToolSchemaFormat};
+use portable_pty::{CommandBuilder, PtySize, native_pty_system};
 use project::{Project, terminals::TerminalKind};
 use schemars::JsonSchema;
 use serde::{Deserialize, Serialize};
@@ -17,7 +17,7 @@ use std::{
    time::{Duration, Instant},
 };
 use terminal_view::TerminalView;
-use ui::{Disclosure, IconName, Tooltip, prelude::*};
+use ui::{Disclosure, Tooltip, prelude::*};
 use util::{
    get_system_shell, markdown::MarkdownInlineCode, size::format_file_size,
    time::duration_alt_display,
@@ -34,11 +34,37 @@ pub struct TerminalToolInput {
    cd: String,
 }

-pub struct TerminalTool;
+pub struct TerminalTool {
+    determine_shell: Shared<Task<String>>,
+}
+
+impl TerminalTool {
+    pub const NAME: &str = "terminal";
+
+    pub(crate) fn new(cx: &mut App) -> Self {
+        let determine_shell = cx.background_spawn(async move {
+            if cfg!(windows) {
+                return get_system_shell();
+            }
+
+            if which::which("bash").is_ok() {
+                log::info!("agent selected bash for terminal tool");
+                "bash".into()
+            } else {
+                let shell = get_system_shell();
+                log::info!("agent selected {shell} for terminal tool");
+                shell
+            }
+        });
+        Self {
+            determine_shell: determine_shell.shared(),
+        }
+    }
+}

 impl Tool for TerminalTool {
    fn name(&self) -> String {
-        "terminal".to_string()
+        Self::NAME.to_string()
    }

    fn needs_confirmation(&self, _: &serde_json::Value, _: &App) -> bool {
@@ -84,34 +110,105 @@ impl Tool for TerminalTool {
        _messages: &[LanguageModelRequestMessage],
        project: Entity<Project>,
        _action_log: Entity<ActionLog>,
+        _model: Arc<dyn LanguageModel>,
        window: Option<AnyWindowHandle>,
        cx: &mut App,
    ) -> ToolResult {
-        let Some(window) = window else {
-            return Task::ready(Err(anyhow!("no window options"))).into();
-        };
-
        let input: TerminalToolInput = match serde_json::from_value(input) {
            Ok(input) => input,
            Err(err) => return Task::ready(Err(anyhow!(err))).into(),
        };

        let input_path = Path::new(&input.cd);
-        let working_dir = match working_dir(cx, &input, &project, input_path) {
+        let working_dir = match working_dir(&input, &project, input_path, cx) {
            Ok(dir) => dir,
-            Err(err) => return Task::ready(Err(anyhow!(err))).into(),
+            Err(err) => return Task::ready(Err(err)).into(),
        };
-        let terminal = project.update(cx, |project, cx| {
-            project.create_terminal(
-                TerminalKind::Task(task::SpawnInTerminal {
-                    command: get_system_shell(),
-                    args: vec!["-c".into(), input.command.clone()],
-                    cwd: working_dir.clone(),
+        let program = self.determine_shell.clone();
+        let command = format!("({}) </dev/null", input.command);
+        let args = vec!["-c".into(), command.clone()];
+        let cwd = working_dir.clone();
+        let env = match &working_dir {
+            Some(dir) => project.update(cx, |project, cx| {
+                project.directory_environment(dir.as_path().into(), cx)
+            }),
+            None => Task::ready(None).shared(),
+        };
+
+        let env = cx.spawn(async move |_| {
+            let mut env = env.await.unwrap_or_default();
+            if cfg!(unix) {
+                env.insert("PAGER".into(), "cat".into());
+            }
+            env
+        });
+
+        let Some(window) = window else {
+            // Headless setup, a test or eval. Our terminal subsystem requires a workspace,
+            // so bypass it and provide a convincing imitation using a pty.
+            let task = cx.background_spawn(async move {
+                let env = env.await;
+                let pty_system = native_pty_system();
+                let program = program.await;
+                let mut cmd = CommandBuilder::new(program);
+                cmd.args(args);
+                for (k, v) in env {
+                    cmd.env(k, v);
+                }
+                if let Some(cwd) = cwd {
+                    cmd.cwd(cwd);
+                }
+                let pair = pty_system.openpty(PtySize {
+                    rows: 24,
+                    cols: 80,
                    ..Default::default()
-                }),
-                window,
-                cx,
-            )
+                })?;
+                let mut child = pair.slave.spawn_command(cmd)?;
+                let mut reader = pair.master.try_clone_reader()?;
+                drop(pair);
+                let mut content = Vec::new();
+                reader.read_to_end(&mut content)?;
+                let mut content = String::from_utf8(content)?;
+                // Massage the pty output a bit to try to match what the terminal codepath gives us
+                LineEnding::normalize(&mut content);
+                content = content
+                    .chars()
+                    .filter(|c| c.is_ascii_whitespace() || !c.is_ascii_control())
+                    .collect();
+                let content = content.trim_start().trim_start_matches("^D");
+                let exit_status = child.wait()?;
+                let (processed_content, _) =
+                    process_content(content, &input.command, Some(exit_status));
+                Ok(processed_content.into())
+            });
+            return ToolResult {
+                output: task,
+                card: None,
+            };
+        };
+
+        let terminal = cx.spawn({
+            let project = project.downgrade();
+            async move |cx| {
+                let program = program.await;
+                let env = env.await;
+                let terminal = project
+                    .update(cx, |project, cx| {
+                        project.create_terminal(
+                            TerminalKind::Task(task::SpawnInTerminal {
+                                command: program,
+                                args,
+                                cwd,
+                                env,
+                                ..Default::default()
+                            }),
+                            window,
+                            cx,
+                        )
+                    })?
+                    .await;
+                terminal
+            }
        });

        let card = cx.new(|cx| {
@@ -134,11 +231,13 @@ impl Tool for TerminalTool {
                            workspace.downgrade(),
                            None,
                            project.downgrade(),
+                            true,
                            window,
                            cx,
                        )
                    })
                })?;
+
                let _ = card.update(cx, |card, _| {
                    card.terminal = Some(terminal_view.clone());
                    card.start_instant = Instant::now();
@@ -152,8 +251,11 @@ impl Tool for TerminalTool {
                })?;

                let previous_len = content.len();
-                let (processed_content, finished_with_empty_output) =
-                    process_content(content, &input.command, exit_status);
+                let (processed_content, finished_with_empty_output) = process_content(
+                    &content,
+                    &input.command,
+                    exit_status.map(portable_pty::ExitStatus::from),
+                );

                let _ = card.update(cx, |card, _| {
                    card.command_finished = true;
@@ -165,7 +267,7 @@ impl Tool for TerminalTool {
                    card.elapsed_time = Some(card.start_instant.elapsed());
                });

-                Ok(processed_content)
+                Ok(processed_content.into())
            }
        });

@@ -177,9 +279,9 @@ impl Tool for TerminalTool {
 }

 fn process_content(
-    content: String,
+    content: &str,
    command: &str,
-    exit_status: Option<ExitStatus>,
+    exit_status: Option<portable_pty::ExitStatus>,
 ) -> (String, bool) {
    let should_truncate = content.len() > COMMAND_OUTPUT_LIMIT;

@@ -192,7 +294,7 @@ fn process_content(
        end_ix = content[..end_ix].rfind('\n').unwrap_or(end_ix);
        &content[..end_ix]
    } else {
-        content.as_str()
+        content
    };
    let is_empty = content.trim().is_empty();

@@ -221,11 +323,16 @@ fn process_content(
            }
        }
        Some(exit_status) => {
-            let code = exit_status.code().unwrap_or(-1);
            if is_empty {
-                format!("Command \"{command}\" failed with exit code {code}.")
+                format!(
+                    "Command \"{command}\" failed with exit code {}.",
+                    exit_status.exit_code()
+                )
            } else {
-                format!("Command \"{command}\" failed with exit code {code}.\n\n{content}")
+                format!(
+                    "Command \"{command}\" failed with exit code {}.\n\n{content}",
+                    exit_status.exit_code()
+                )
            }
        }
        None => {
@@ -239,11 +346,11 @@ fn process_content(
 }

 fn working_dir(
-    cx: &mut App,
    input: &TerminalToolInput,
    project: &Entity<Project>,
    input_path: &Path,
-) -> Result<Option<PathBuf>, &'static str> {
+    cx: &mut App,
+) -> Result<Option<PathBuf>> {
    let project = project.read(cx);

    if input.cd == "." {
@@ -253,7 +360,7 @@ fn working_dir(
        match worktrees.next() {
            Some(worktree) => {
                if worktrees.next().is_some() {
-                    return Err(
+                    bail!(
                        "'.' is ambiguous in multi-root workspaces. Please specify a root directory explicitly.",
                    );
                }
@@ -267,13 +374,13 @@ fn working_dir(
            .worktrees(cx)
            .any(|worktree| input_path.starts_with(&worktree.read(cx).abs_path()))
        {
-            return Err("The absolute path must be within one of the project's worktrees");
+            bail!("The absolute path must be within one of the project's worktrees");
        }

        Ok(Some(input_path.into()))
    } else {
        let Some(worktree) = project.worktree_for_root_name(&input.cd, cx) else {
-            return Err("`cd` directory {} not found in the project");
+            bail!("`cd` directory {:?} not found in the project", input.cd);
        };

        Ok(Some(worktree.read(cx).abs_path().to_path_buf()))
@@ -329,155 +436,118 @@ impl ToolCard for TerminalToolCard {
        };

        let tool_failed = matches!(status, ToolUseStatus::Error(_));
+
        let command_failed =
            self.command_finished && self.exit_status.is_none_or(|code| !code.success());
+
        if (tool_failed || command_failed) && self.elapsed_time.is_none() {
            self.elapsed_time = Some(self.start_instant.elapsed());
        }
        let time_elapsed = self
            .elapsed_time
            .unwrap_or_else(|| self.start_instant.elapsed());
-        let should_hide_terminal =
-            tool_failed || self.finished_with_empty_output || !self.preview_expanded;
+        let should_hide_terminal = tool_failed || self.finished_with_empty_output;

-        let border_color = cx.theme().colors().border.opacity(0.6);
        let header_bg = cx
            .theme()
            .colors()
            .element_background
            .blend(cx.theme().colors().editor_foreground.opacity(0.025));

-        let header_label = h_flex()
-            .w_full()
-            .max_w_full()
-            .px_1()
-            .gap_0p5()
-            .opacity(0.8)
-            .child(
-                h_flex()
-                    .child(
-                        Icon::new(IconName::Terminal)
-                            .size(IconSize::XSmall)
-                            .color(Color::Muted),
-                    )
-                    .child(
-                        div()
-                            .id(("terminal-tool-header-input-command", self.entity_id))
-                            .text_size(rems(0.8125))
-                            .font_buffer(cx)
-                            .child(self.input_command.clone())
-                            .ml_1p5()
-                            .mr_0p5()
-                            .tooltip({
-                                let path = self
-                                    .working_dir
-                                    .as_ref()
-                                    .cloned()
-                                    .or_else(|| env::current_dir().ok())
-                                    .map(|path| format!("\"{}\"", path.display()))
-                                    .unwrap_or_else(|| "current directory".to_string());
-                                Tooltip::text(if self.command_finished {
-                                    format!("Ran in {path}")
-                                } else {
-                                    format!("Running in {path}")
-                                })
-                            }),
-                    ),
-            )
-            .into_any_element();
+        let border_color = cx.theme().colors().border.opacity(0.6);
+
+        let path = self
+            .working_dir
+            .as_ref()
+            .cloned()
+            .or_else(|| env::current_dir().ok())
+            .map(|path| format!("{}", path.display()))
+            .unwrap_or_else(|| "current directory".to_string());

        let header = h_flex()
            .flex_none()
-            .p_1()
            .gap_1()
            .justify_between()
            .rounded_t_md()
-            .bg(header_bg)
-            .child(header_label)
-            .map(|header| {
-                let header = header
-                    .when(self.was_content_truncated, |header| {
-                        let tooltip =
-                            if self.content_line_count + 10 > terminal::MAX_SCROLL_HISTORY_LINES {
-                                "Output exceeded terminal max lines and was \
-                                truncated, the model received the first 16 KB."
-                                    .to_string()
-                            } else {
-                                format!(
-                                    "Output is {} long, to avoid unexpected token usage, \
-                                    only 16 KB was sent back to the model.",
-                                    format_file_size(self.original_content_len as u64, true),
-                                )
-                            };
-                        header.child(
-                            div()
-                                .id(("terminal-tool-truncated-label", self.entity_id))
-                                .tooltip(Tooltip::text(tooltip))
-                                .child(
-                                    Label::new("(truncated)")
-                                        .color(Color::Disabled)
-                                        .size(LabelSize::Small),
-                                ),
-                        )
-                    })
-                    .when(time_elapsed > Duration::from_secs(10), |header| {
-                        header.child(
-                            Label::new(format!("({})", duration_alt_display(time_elapsed)))
-                                .buffer_font(cx)
-                                .color(Color::Disabled)
-                                .size(LabelSize::Small),
-                        )
-                    });
-
-                if tool_failed || command_failed {
-                    header.child(
-                        div()
-                            .id(("terminal-tool-error-code-indicator", self.entity_id))
-                            .child(
-                                Icon::new(IconName::Close)
-                                    .size(IconSize::Small)
-                                    .color(Color::Error),
-                            )
-                            .when(command_failed && self.exit_status.is_some(), |this| {
-                                this.tooltip(Tooltip::text(format!(
-                                    "Exited with code {}",
-                                    self.exit_status
-                                        .and_then(|status| status.code())
-                                        .unwrap_or(-1),
-                                )))
-                            })
-                            .when(
-                                !command_failed && tool_failed && status.error().is_some(),
-                                |this| {
-                                    this.tooltip(Tooltip::text(format!(
-                                        "Error: {}",
-                                        status.error().unwrap(),
-                                    )))
-                                },
-                            ),
-                    )
-                } else if self.command_finished {
-                    header.child(
-                        Icon::new(IconName::Check)
-                            .size(IconSize::Small)
-                            .color(Color::Success),
-                    )
+            .child(
+                div()
+                    .id(("command-target-path", self.entity_id))
+                    .w_full()
+                    .max_w_full()
+                    .overflow_x_scroll()
+                    .child(
+                        Label::new(path)
+                            .buffer_font(cx)
+                            .size(LabelSize::XSmall)
+                            .color(Color::Muted),
+                    ),
+            )
+            .when(self.was_content_truncated, |header| {
+                let tooltip = if self.content_line_count + 10 > terminal::MAX_SCROLL_HISTORY_LINES {
+                    "Output exceeded terminal max lines and was \
+                        truncated, the model received the first 16 KB."
+                        .to_string()
                } else {
-                    header.child(
-                        Icon::new(IconName::ArrowCircle)
-                            .size(IconSize::Small)
-                            .color(Color::Info)
-                            .with_animation(
-                                "arrow-circle",
-                                Animation::new(Duration::from_secs(2)).repeat(),
-                                |icon, delta| {
-                                    icon.transform(Transformation::rotate(percentage(delta)))
-                                },
-                            ),
+                    format!(
+                        "Output is {} long, to avoid unexpected token usage, \
+                            only 16 KB was sent back to the model.",
+                        format_file_size(self.original_content_len as u64, true),
                    )
-                }
+                };
+                header.child(
+                    h_flex()
+                        .id(("terminal-tool-truncated-label", self.entity_id))
+                        .tooltip(Tooltip::text(tooltip))
+                        .gap_1()
+                        .child(
+                            Icon::new(IconName::Info)
+                                .size(IconSize::XSmall)
+                                .color(Color::Ignored),
+                        )
+                        .child(
+                            Label::new("Truncated")
+                                .color(Color::Muted)
+                                .size(LabelSize::Small),
+                        ),
+                )
            })
-            .when(!tool_failed && !self.finished_with_empty_output, |header| {
+            .when(time_elapsed > Duration::from_secs(10), |header| {
+                header.child(
+                    Label::new(format!("({})", duration_alt_display(time_elapsed)))
+                        .buffer_font(cx)
+                        .color(Color::Muted)
+                        .size(LabelSize::Small),
+                )
+            })
+            .when(tool_failed || command_failed, |header| {
+                header.child(
+                    div()
+                        .id(("terminal-tool-error-code-indicator", self.entity_id))
+                        .child(
+                            Icon::new(IconName::Close)
+                                .size(IconSize::Small)
+                                .color(Color::Error),
+                        )
+                        .when(command_failed && self.exit_status.is_some(), |this| {
+                            this.tooltip(Tooltip::text(format!(
+                                "Exited with code {}",
+                                self.exit_status
+                                    .and_then(|status| status.code())
+                                    .unwrap_or(-1),
+                            )))
+                        })
+                        .when(
+                            !command_failed && tool_failed && status.error().is_some(),
+                            |this| {
+                                this.tooltip(Tooltip::text(format!(
+                                    "Error: {}",
+                                    status.error().unwrap(),
+                                )))
+                            },
+                        ),
+                )
+            })
+            .when(!should_hide_terminal, |header| {
                header.child(
                    Disclosure::new(
                        ("terminal-tool-disclosure", self.entity_id),
@@ -500,10 +570,219 @@ impl ToolCard for TerminalToolCard {
            .border_color(border_color)
            .rounded_lg()
            .overflow_hidden()
-            .child(header)
-            .when(!should_hide_terminal, |this| {
-                this.child(div().child(terminal.clone()).min_h(px(250.0)))
+            .child(
+                v_flex().p_2().gap_0p5().bg(header_bg).child(header).child(
+                    Label::new(self.input_command.clone())
+                        .buffer_font(cx)
+                        .size(LabelSize::Small),
+                ),
+            )
+            .when(self.preview_expanded && !should_hide_terminal, |this| {
+                this.child(
+                    div()
+                        .pt_2()
+                        .min_h_72()
+                        .border_t_1()
+                        .border_color(border_color)
+                        .bg(cx.theme().colors().editor_background)
+                        .rounded_b_md()
+                        .text_ui_sm(cx)
+                        .child(terminal.clone()),
+                )
            })
            .into_any()
    }
 }
+
+#[cfg(test)]
+mod tests {
+    use editor::EditorSettings;
+    use fs::RealFs;
+    use gpui::{BackgroundExecutor, TestAppContext};
+    use language_model::fake_provider::FakeLanguageModel;
+    use pretty_assertions::assert_eq;
+    use serde_json::json;
+    use settings::{Settings, SettingsStore};
+    use terminal::terminal_settings::TerminalSettings;
+    use theme::ThemeSettings;
+    use util::{ResultExt as _, test::TempTree};
+
+    use super::*;
+
+    fn init_test(executor: &BackgroundExecutor, cx: &mut TestAppContext) {
+        zlog::init();
+        zlog::init_output_stdout();
+
+        executor.allow_parking();
+        cx.update(|cx| {
+            let settings_store = SettingsStore::test(cx);
+            cx.set_global(settings_store);
+            language::init(cx);
+            Project::init_settings(cx);
+            workspace::init_settings(cx);
+            ThemeSettings::register(cx);
+            TerminalSettings::register(cx);
+            EditorSettings::register(cx);
+        });
+    }
+
+    #[gpui::test]
+    async fn test_interactive_command(executor: BackgroundExecutor, cx: &mut TestAppContext) {
+        if cfg!(windows) {
+            return;
+        }
+
+        init_test(&executor, cx);
+
+        let fs = Arc::new(RealFs::new(None, executor));
+        let tree = TempTree::new(json!({
+            "project": {},
+        }));
+        let project: Entity<Project> =
+            Project::test(fs, [tree.path().join("project").as_path()], cx).await;
+        let action_log = cx.update(|cx| cx.new(|_| ActionLog::new(project.clone())));
+        let model = Arc::new(FakeLanguageModel::default());
+
+        let input = TerminalToolInput {
+            command: "cat".to_owned(),
+            cd: tree
+                .path()
+                .join("project")
+                .as_path()
+                .to_string_lossy()
+                .to_string(),
+        };
+        let result = cx.update(|cx| {
+            TerminalTool::run(
+                Arc::new(TerminalTool::new(cx)),
+                serde_json::to_value(input).unwrap(),
+                &[],
+                project.clone(),
+                action_log.clone(),
+                model,
+                None,
+                cx,
+            )
+        });
+
+        let output = result.output.await.log_err().map(|output| output.content);
+        assert_eq!(output, Some("Command executed successfully.".into()));
+    }
+
+    #[gpui::test]
+    async fn test_working_directory(executor: BackgroundExecutor, cx: &mut TestAppContext) {
+        if cfg!(windows) {
+            return;
+        }
+
+        init_test(&executor, cx);
+
+        let fs = Arc::new(RealFs::new(None, executor));
+        let tree = TempTree::new(json!({
+            "project": {},
+            "other-project": {},
+        }));
+        let project: Entity<Project> =
+            Project::test(fs, [tree.path().join("project").as_path()], cx).await;
+        let action_log = cx.update(|cx| cx.new(|_| ActionLog::new(project.clone())));
+        let model = Arc::new(FakeLanguageModel::default());
+
+        let check = |input, expected, cx: &mut App| {
+            let headless_result = TerminalTool::run(
+                Arc::new(TerminalTool::new(cx)),
+                serde_json::to_value(input).unwrap(),
+                &[],
+                project.clone(),
+                action_log.clone(),
+                model.clone(),
+                None,
+                cx,
+            );
+            cx.spawn(async move |_| {
+                let output = headless_result
+                    .output
+                    .await
+                    .log_err()
+                    .map(|output| output.content);
+                assert_eq!(output, expected);
+            })
+        };
+
+        cx.update(|cx| {
+            check(
+                TerminalToolInput {
+                    command: "pwd".into(),
+                    cd: "project".into(),
+                },
+                Some(format!(
+                    "```\n{}\n```",
+                    tree.path().join("project").display()
+                )),
+                cx,
+            )
+        })
+        .await;
+
+        cx.update(|cx| {
+            check(
+                TerminalToolInput {
+                    command: "pwd".into(),
+                    cd: ".".into(),
+                },
+                Some(format!(
+                    "```\n{}\n```",
+                    tree.path().join("project").display()
+                )),
+                cx,
+            )
+        })
+        .await;
+
+        // Absolute path above the worktree root
+        cx.update(|cx| {
+            check(
+                TerminalToolInput {
+                    command: "pwd".into(),
+                    cd: tree.path().to_string_lossy().into(),
+                },
+                None,
+                cx,
+            )
+        })
+        .await;
+
+        project
+            .update(cx, |project, cx| {
+                project.create_worktree(tree.path().join("other-project"), true, cx)
+            })
+            .await
+            .unwrap();
+
+        cx.update(|cx| {
+            check(
+                TerminalToolInput {
+                    command: "pwd".into(),
+                    cd: "other-project".into(),
+                },
+                Some(format!(
+                    "```\n{}\n```",
+                    tree.path().join("other-project").display()
+                )),
+                cx,
+            )
+        })
+        .await;
+
+        cx.update(|cx| {
+            check(
+                TerminalToolInput {
+                    command: "pwd".into(),
+                    cd: ".".into(),
+                },
+                None,
+                cx,
+            )
+        })
+        .await;
+    }
+}
--- a/Show More
+++ b/Show More
				`@@ -1 +0,0 @@`
				<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-message-circle-dashed-icon lucide-message-circle-dashed"><path d="M13.5 3.1c-.5 0-1-.1-1.5-.1s-1 .1-1.5.1"/><path d="M19.3 6.8a10.45 10.45 0 0 0-2.1-2.1"/><path d="M20.9 13.5c.1-.5.1-1 .1-1.5s-.1-1-.1-1.5"/><path d="M17.2 19.3a10.45 10.45 0 0 0 2.1-2.1"/><path d="M10.5 20.9c.5.1 1 .1 1.5.1s1-.1 1.5-.1"/><path d="M3.5 17.5 2 22l4.5-1.5"/><path d="M3.1 10.5c0 .5-.1 1-.1 1.5s.1 1 .1 1.5"/><path d="M6.8 4.7a10.45 10.45 0 0 0-2.1 2.1"/></svg>