v1.6.8

⚡ Performance

• vectorize store.search via shared _chunk_cosines helper, remove _cosine_similarity (f0bca73)
• incrementally append new records to warm numpy index in VectorStore.add (b2f3b35)

🐛 Bug Fixes

• use requested_batch in success path and replace monkeypatch tree test with behavior assertions (502c56a)
• store content on exact candidate to eliminate double file read (3d70681)