Closes the MVP2 cycle (fase 9-14 all green). Documents the three
substantive shipped pieces (14.1 auto-update toast, 14.2 offline
polish + sync_conflicts review route, 14.3 build-time version chip),
the test deltas, cumulative MVP2 totals, and the two plan deviations
(updateViaCache substitute, localStorage-based discard).
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>