check

name: check description: Run Rust fmt, clippy, and unit tests. Use after making Rust code changes.

Run all local checks in order:

1. cd crates && cargo fmt --all -- --check — if formatting fails, run cargo fmt --all to fix it
2. cd crates && cargo clippy --locked --all-targets --all-features -- -D warnings — fix any warnings
3. cd crates && cargo test --lib — ensure all unit tests pass

Report a summary of what passed/failed.