099e5347d5
- Updated the Makefile to include a new `clean-disk` target for removing disk cache, and modified the `run-validation` target to clean the disk cache before starting. - Enhanced the `check-review-labels` target to include additional file types in the search for temporary review labels, improving code hygiene checks. - Refined the README.md to clarify the hardening section and improve the description of the `prefill` command. - Removed the obsolete `test_cache/.gitkeep` file to clean up the repository.