* Add optional tag generation and normalization to auto memory
* Add tag index components and clean up temporary JSONL files
* Preserve tag index state when reconciliation fails
* Refactor and streamline application implementation
* Fix pylint C1803 warnings in tag normalization tests
* Document optional tag index configuration
* Make tag index failures non-blocking and disable auto-memory tags
* Add configurable tag indexing and tag listing
* Add tag-filtered hybrid search with exact candidate ranking
* Remove obsolete generated files
* Rename tag index key to tag_key and reject reserved fields
* Extract automatic tagging into a dedicated step
* Restrict frontmatter updates to authorized keys
* Refine tag filtering and automatic memory tagging
* Require underscore-separated tags in auto-tag prompts
- Forbid spaces in tags and require underscores (e.g. sam_altman) in both
English and Chinese auto_tag prompts, with English examples switched to
English entities (OpenAI, gold)
- Drop prompt-string assertions superseded by the new tagging rule
- Merge construction/runtime tag_key validation tests into one parametrized case
* Make max_tags_per_file configurable in auto-tag step
* Consolidate tag index tests
* Fix search test fixture lint warnings
* Align tag contracts and index health behavior
* Fall back when tag index is unavailable
---------
Co-authored-by: jinli.yl <jinli.yl@alibaba-inc.com>
* feat(file_store): upgrade FAISS to HNSW index with async reindex and path constraint
- Replace IndexFlatIP with IndexHNSWFlat for better recall/speed tradeoff
- Add dynamic efSearch (limit * 5) scaled to query request size
- Add async_reindex option: background rebuild with generation-based invalidation
- Extract _delete_nodes() in LocalFileStore for subclass reuse
- Add unit tests for file store consistency
* fix: resolve pylint warnings in faiss store and test file
* refactor(file_store): replace generation-based reindex with event-flag worker
- Replace _reindex_generation/lock/task with a single long-lived worker
coroutine consuming an asyncio.Event flag; repeated submissions coalesce
- Use local index reference in vector_search to avoid TOCTOU on self._faiss_index
- Pass index explicitly to _set_ef_search for consistency
- Track _index_writes to re-arm reindex after concurrent writes
- Update tests to match new internal API
* fix: resolve pylint too-many-return-statements and implicit-booleaness warnings
* feat(file_store): add refine maintenance hook and incremental embedding backfill
- Add refine() idle-time maintenance hook to BaseFileStore/LocalFileStore
- FaissLocalFileStore: incremental vector add on backfill instead of full rebuild
- Dynamic tombstone compaction threshold scaled by index size
- Add RefineStoreStep with daily cron job (refine_store_cron)
- Enable faiss backend and embedding_store by default in default.yaml
- Add unit tests for faiss index maintenance
* chore(deps): promote faiss-cpu to core dependencies
faiss backend is now the default file_store, so faiss-cpu moves from
the optional [core] extra to the base dependencies list.
* feat: rename refine_store to optimize_index and add vecdb_path_constraint
- Rename refine_store step to optimize_index with cron job scheduling
- Add vecdb_path_constraint to file_store components
- Update default.yaml with optimize_index_cron and faiss backend comment
- Update memory_search docs (en/zh) for FAISS vector management
- Update unit tests for index maintenance
* feat(faiss): add embedding digest to reject stale sidecar after partial dump
Add _chunks_embedding_digest() that computes an order-independent SHA-256
over (chunk_id, float16 embedding) pairs. The digest is written into the
idmap sidecar at dump time and verified at load time. A mismatch means the
sidecar vectors belong to a different chunk generation than the authoritative
JSONL — detectable even when the live-ID set is unchanged (same-ID in-place
update crash window).
Add test_faiss_rejects_stale_sidecar_after_partial_dump reproducing the
crash-between-writes scenario and asserting digest-based rejection.
Compress verbose docstrings/comments in existing tests for pylint line
budget.
---------
Co-authored-by: sa-buc <jiangniurou.xyf@dail-algo011164204033.ET135>
