asta-nguyen8/8/2026, 7:00:15 AM

The ANN query put MATCH in ORDER BY instead of WHERE and didn't use
the hidden distance column for ordering. Per sqlite-vec docs, the
correct KNN pattern is:

  WHERE embedding MATCH ? AND <metadata filters>
  ORDER BY distance
  LIMIT k

The old query would error out when the vec extension is loaded,
silently falling back to linear scan — defeating the ANN optimization.
Under bun:sqlite the extension never loads so the bug was latent, but
it would manifest on any SQLite build with extension loading support.

Typecheck 8/8, tests 144 pass.

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Parent7261302