A shared test_support module in db.rs provides the fixture: sqlite-vec
registered via auto-extension, an in-memory connection with foreign keys
on, and both migrations applied - no refactoring of production code
needed since every query function already takes &Connection.
db.rs coverage: folder idempotency, upsert_image update semantics
(favorite/rating preserved, AI tag state invalidated), the get_images
filter matrix with pagination and count_images agreement, tag
merge/rename/delete, user-tag precedence over AI tags in update_ai_tags,
album CRUD with FK cascade, the embedding job queue (backfill, retry,
consistency repair), tag search, and delete_folder cascades.
vector.rs coverage: pack/unpack round-trip, embedding upsert/delete with
dimension validation, and find_similar_image_ids ranking on both the
global KNN and folder-scoped brute-force paths.
LyAhn
782cf0ea08