Adds specs for the files added or modified in the recent merge that
weren't yet covered: oauthReturnPath, withATProtoImages, link,
displayLanguage, and the useGitHubContent / useImageUpload /
useNoteFreshness hooks. Locks in the new pullLatest contract
({raw, failureStatus}) and the fetchLatestSha branch semantics
(ok/unauthorized/offline).
All database reads and writes now run off the main thread via a
dedicated worker, eliminating IndexedDB overhead from the frame budget.
- Create data.worker.ts exposing the Data class via Comlink
- Refactor data.ts to export a Comlink-wrapped proxy and a standalone
generateId() pure function (workers can't expose sync methods cleanly)
- Update all 10 call sites to import generateId directly instead of
calling data.generateId()
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
