Notes/work/cal/vote adapters had wrong table names and missing fields.
Now match actual PG schemas. Added books, cart, providers, files, trips,
inbox, splat adapters. Engine gains idempotency, dry-run, disk backup,
per-row error recovery, and progress logging.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Jeff Emmett