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fd571ac539
- numpy soft dependency: try/except import + _HAS_NUMPY flag; _encode_embedding and _decode_embedding fall back to struct.pack/unpack; search_vector falls back to pure-Python cosine loop — startup never fails without numpy reinstalled - SQLite UPSERT guard: _HAS_UPSERT = sqlite_version_info >= (3,24,0); save_chunk and save_chunks_batch fall back to INSERT OR REPLACE on SQLite < 3.24 with a one-time startup warning about potential FTS rowid drift - _bm25_rank_to_score floor: 0.3 + 0.69*(|rank|/(1+|rank|)) → always in [0.3, 0.99), prevents small-corpus matches scoring 0.0 and being filtered by min_score - detect_index_dim BLOB-aware: check isinstance(raw, bytes) first and return len(raw)//4 before json.loads, so /memory status works after embedding format switch - Comment: "CJK single-char" → "CJK tokens shorter than 3 characters" Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>