- verify-references --expansion overlays expansion/solution on each reference and runs the
cumulative tests plus the drop test; refuses a solution that touches src/engine/
- CI job verify-expansions
- README: workspace-template + git init step, tool list, repo disclaimer link
- Cargo.lock for every Rust reference (staged with the reference, pins serde for rustc 1.85.1)
Co-Authored-By: Claude Opus 5.5 <[email protected]>