- bankSyncConfigService: SYNC_DAYS_MAX=90, getBankSyncConfig clamps on read,
setSyncDays rejects >90 with explanation
- bankSyncService: every sync requests full sync_days window, dedup handles
already-seen transactions
- dataSources status endpoint returns sync_days alongside enabled
- BankSyncAdminCard: input max 90, live clamp, description cites Bridge limit
- BankSyncSection: third stat tile showing History window X days