Boarded with #11756 (a duplicate fix for the same underlying issue #11650). Compared both implementations directly: this one is technically superior — guards the json_extract() call with json_valid(metadata) so malformed/legacy metadata returns no match instead of throwing a 500, and covers genericBackend.ts/obsidianBackend.ts in addition to sqliteBackend.ts. #11756 only touched SQLite and had no malformed-JSON guard. Closing #11756 with credit. Resynced onto the updated release tip: the test file's `await import("../../src/lib/localDb.ts")` broke after #12055 deleted the barrel earlier this session (your branch forked before that migration) — fixed to import updateSettings directly from @/lib/db/settings, matching the pattern already used by other integration tests. typecheck:core, check:dashboard-typecheck, check:file-size, check:changelog-integrity, check:complexity, check:cognitive-complexity, check:cycles, check-deps all green; 4/4 integration + 35/35 vitest pass after resync. Thanks for the thorough, well-tested fix.