Merge rust-checks.yml into prek-checks.yml for a unified workflow that
runs formatting and clippy/test checks in parallel jobs.
Add reusable composite actions:
- setup-rust: Smart Rust toolchain management with caching
* Uses cargo-binstall for pre-built binary downloads
* Integrates Mozilla sccache-action for compilation caching
* Workspace-relative paths for better cache control
* GitHub token support for improved rate limits
- setup-llvm-with-apt: LLVM installation with native dependencies
- detect-runner-os: Consistent OS detection for cache keys
Key improvements:
- Install prek via cargo-binstall --git (crates.io outdated at v0.0.1)
- Download timelord-cli from cargo-quickinstall
- Set BINSTALL_MAXIMUM_RESOLUTION_TIMEOUT=10 to avoid rate limit delays
- Default Rust version 1.87.0 with override support
- Remove redundant sccache stats (handled by Mozilla action)
Significantly reduces CI runtime through binary downloads instead of
compilation while maintaining all existing quality checks.
The setup-uv@v6 action has deprecated Node 18 support mid-version by
using the File API, causing workflow failures. Temporarily downgrading
to v5 until we migrate to a better runner image with Node 20+ support.
