This reduces 'touch crates/editor/src/editor.rs && cargo +nightly build' from 8.9s to 8.5s. That same scenario used to take 8s less than a week ago. :) I'm measuring with nightly rustc, because it's compile times are better than those of stable thanks to https://github.com/rust-lang/rust/pull/138522 main (8.2s total):  [cargo-timing.html.zip](https://github.com/user-attachments/files/20364175/cargo-timing.html.zip) #22be776 (7.5s total): [cargo-timing-20250521T085303.892834Z.html.zip](https://github.com/user-attachments/files/20364391/cargo-timing-20250521T085303.892834Z.html.zip)  Release Notes: - N/A
Eval
This eval assumes the working directory is the root of the repository. Run it with:
cargo run -p eval
The eval will optionally read a .env file in crates/eval if you need it to set environment variables, such as API keys.
Explorer Tool
The explorer tool generates a self-contained HTML view from one or more thread JSON file. It provides a visual interface to explore the agent thread, including tool calls and results. See ./docs/explorer.md for more details.
Usage
cargo run -p eval --bin explorer -- --input <path-to-json-files> --output <output-html-path>
Example:
cargo run -p eval --bin explorer -- --input ./runs/2025-04-23_15-53-30/fastmcp_bugifx/*/last.messages.json --output /tmp/explorer.html