dict() on a types.SimpleNamespace raises TypeError: object is not iterable.
vars() correctly extracts the __dict__ attribute map. Fixes
TestBuildCollectionFailureTracking::test_high_failure_rate_raises_runtime_error.
- _write_build_meta: after writing build_meta.json, also stamps built_at
onto the collection via col.modify() (best-effort, swallows exceptions)
- _collection_is_current: if sidecar built_at is missing/zero, falls back
to collection.metadata["built_at"] so a deleted sidecar doesn't force
an unnecessary full rebuild when the ChromaDB data is still valid
- Add BATCH_RETRY_LIMIT and BATCH_RETRY_DELAY constants after DEFAULT_BATCH_SIZE
- Add _insert_batch_with_retry() helper with exponential backoff
- Replace both bare try/except insert blocks in _build_collection_from_bulk
with calls to the retry helper so transient ChromaDB errors are retried
up to BATCH_RETRY_LIMIT times before a batch is counted as failed
* feat(rag): Phase 2 — ChromaDB vector index over bulk card DB
* feat(rag): add routes/rag.py with build, search, status endpoints
* Update lab_api.pyfeat(rag): register rag_router in lab_api.py, remove old inline rag_status
* Update requirements.txtfeat(rag): add chromadb>=0.5.0 to requirements.txtfeat(rag): add chromadb to requirements.txt
KoalaTrapLord