[prellr]

Problem

memory_search (the SearchMemoryArtifacts query) is advertised as searching "titles, content, and tags", but content_tsv (migration 068) is generated from only title + content. So a full-text search for a tag returns nothing — e.g. searching planning-doc-migration found 0 rows even though many artifacts carry that tag. (Discovered while bulk-migrating planning docs with a shared tag and finding them unsearchable by it.)

Fix — migration 127

Rebuild content_tsv to fold tags into the vector:

to_tsvector('english',
  coalesce(title,'') || ' ' || coalesce(content,'') || ' ' ||
  coalesce(array_to_string(tags, ' '), ''))

A generated column's expression can't be ALTERed in place, so the migration drops the idx_memory_tsv GIN index, drops + re-adds content_tsv with the new expression, and recreates the index. Re-adding the STORED generated column recomputes it for every existing row, so all current artifacts become tag-searchable immediately (memory_artifact is small — the rewrite is quick). .down.sql reverts to title+content only.

No behavior change beyond the fix

• No query change — SearchMemoryArtifacts/CountSearchMemoryArtifacts already match on content_tsv; they now match tag terms too.
• sqlc regen is benign — re-adding the column moves content_tsv (an opaque tsvector, scanned by name) to the end of the RETURNING * / SELECT * column lists. That's the entire generated diff.

Verification

• make sqlc clean · go build ./pkg/db/... ./cmd/multica/ ok.
• FTS expression is correct by construction: to_tsvector folds the tag lexemes in, and websearch_to_tsquery tokenizes the query the same way, so @@ matches. (Couldn't run a live DB proof locally — no Docker here — so the end-to-end check happens on make migrate-up / CI.)

Note for reviewer

Applying this on deploy (make migrate-up) rewrites the content_tsv for existing rows once. If you'd rather keep tags out of relevance weighting, an alternative is setweight(...) with a low weight for the tags portion — happy to switch to that if preferred.

🤖 Generated with Claude Code