Detects PF↔PJ transitions and CUI changes after import; auto-resyncs uninvoiced orders (max 5/cycle) and shows visual alert for invoiced ones. - SQLite: partner_mismatch column + batch helpers - sync_service: detection loop + _resync_partner_for_order - dashboard: red dot + attention card indicator - modal: alert with contextual message and resync button Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>