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optimclaw/src
ce5961b1ec fix(libsql): support flexible embedding dimensions (#534)
* fix(libsql): support flexible embedding dimensions (#494)

The libSQL schema hardcoded F32_BLOB(1536) for the embedding column,
preventing use of models with other dimensions (e.g. 768-dim
nomic-embed-text). This adds incremental migration support to the
libSQL backend and a V9 migration that rebuilds the memory_chunks
table with a plain BLOB column accepting any dimension.

- Add incremental migration infrastructure (INCREMENTAL_MIGRATIONS
  array + run_incremental() runner tracked via _migrations table)
- V9 migration rebuilds memory_chunks with BLOB column, drops the
  vector index (which requires fixed-dimension F32_BLOB)
- Update base schema for fresh installs (BLOB, no vector index)
- Vector search gracefully falls back to FTS-only when the index
  is absent (matches PostgreSQL behavior after its V9 migration)
- Remove now-incorrect "dimension is not 1536" warnings

Existing embeddings are preserved during migration. Users only need
to re-embed if they change their embedding model/dimension.

[skip-regression-check]

Co-Authored-By: Claude Opus 4.6 <[email protected]>

* fix: wrap incremental migrations in transaction for atomicity

Address PR review feedback: if the process crashes after executing
migration SQL but before recording it in _migrations, the migration
would be applied but not marked complete. Wrapping both operations
in a transaction ensures they succeed or fail together.

[skip-regression-check]

Co-Authored-By: Claude Opus 4.6 <[email protected]>

* chore: merge main and fix formatting drift

Co-Authored-By: Claude Opus 4.6 <[email protected]>

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Co-authored-by: Claude Opus 4.6 <[email protected]>
2026-03-06 23:29:32 +00:00
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