- Add is_pinned(), pin(), _load_meta(), _save_meta() to L1CacheManager
- Update can_delete() and can_discard_activity() to check local pinned status
- Update run deletion endpoints (API and UI) to check pinned metadata
- Remove L2 shared check fallback from run deletion
- Fix L2SharedChecker to return True on error (safer - prevents accidental deletion)
- Update tests for new pinned behavior
When items are published to L2, the publish flow marks them as pinned
locally. This ensures items remain non-deletable even if L2 is unreachable,
and both outputs AND inputs of published runs are protected.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
- Add cache_manager.py with L1CacheManager wrapping artdag Cache
- Add L2SharedChecker for checking published status via L2 API
- Update server.py to use cache_manager for storage
- Update DELETE /cache/{content_hash} to enforce deletion rules
- Add DELETE /runs/{run_id} endpoint for discarding runs
- Record activities when runs complete for deletion tracking
- Add comprehensive tests for cache manager
Deletion rules enforced:
- Cannot delete items published to L2
- Cannot delete inputs/outputs of runs
- Can delete orphaned items
- Runs can only be discarded if no items are shared
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
