Add automated transaction syncing via Plaid and SimpleFIN providers,
a Settings page for managing connections and account mappings,
background scheduled syncing, and sync history logging.
New backend: BankSync plugin project with PlaidSyncProvider and
SimpleFinSyncProvider, SyncConnection/LinkedAccount/SyncLog models,
AES-256 encryption service, BankSyncService orchestration,
BankSyncBackgroundService (15-min tick), and BankSyncController
(13 endpoints). EF migration creates sync_connections,
linked_accounts, and sync_logs tables.
New frontend: Settings view with 3 tabs (Profile, Bank Connections,
Sync History), bankSync API service, BankSyncComplete SignalR
notifications, and Settings nav item in sidebar + avatar dropdown.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Catherine Renelle
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