# 2026-02-23 Session Notes

## Vector Search Bug Fix

Implemented a one-line fix for vector search failures in the Signet core library. The issue was in `packages/core/src/search.ts` line 102, where the `vectorSearch()` function was wrapping query vectors in `Buffer.from(queryVector.buffer)` before passing them to the vec0 MATCH operator. Under `bun:sqlite`, this Buffer-wrapped blob doesn't work correctly—vec0 expects raw Float32Array bytes.

The fix changed the query blob serialization from `Buffer.from(queryVector.buffer)` to `new Float32Array(queryVector)`, matching how `syncVecInsert()` in `db-helpers.ts` line 74 passes vectors to sqlite-vec. This resolves vector search returning empty results despite vectors being present in the vec_embeddings table.

Next: Build with `bun run build`, publish, and have Buba test recall functionality to verify vector and hybrid search results now show `source: "vector"` and `source: "hybrid"` with actual vector scores.