- Add `FileOwnership` to encapsulate file owner and group information.
- Add `ProcessUser` to represent and manage system process user details.
- Enhance ownership matching and debugging with structured data objects.
- Include new documentation on file ownership handling and permission improvements.
- Prepare infrastructure for enriched error handling in filesystem operations.
- Introduce `cache-configuration.md` for detailed instructions on cache setup, permission troubleshooting, and best practices.
- Add `cache-permissions-quick-fix.md` for concise resolutions to common permission errors.
- Include a detailed `FILECACHE_PERMISSION_FIX_PLAN.md` outlining solutions for permission-related issues.
- Enhance `docker-entrypoint.sh` with permission fixes for multi-user caches.
- Update `Makefile` with cache clear commands for local and staging environments.
- Improve `FileCache` for graceful degradation on permission errors, ensuring reliability under multi-user scenarios.
