Migrate rNotes from PostgreSQL to Automerge local-first stack with
dual-write support. Reads go Automerge-first with PG fallback; writes
go to both backends during the migration window.
- Add Automerge schemas for NotebookDoc (schemas.ts)
- Add lifecycle hooks (onInit, onSpaceCreate) to rnotes module
- Dual-write all 8 API routes (notebooks + notes CRUD)
- Add NotesLocalFirstClient wrapping DocSyncManager + EncryptedDocStore
- Enhance migration runner with --dry-run, --module, --verify flags
- Add listDocs() to SyncServer
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
