feat: Drift state verifier double-checking system (WIP - build issues)

CRITICAL: Position Manager stops monitoring randomly
User had to manually close SOL-PERP position after PM stopped at 23:21.

Implemented double-checking system to detect when positions marked
closed in DB are still open on Drift (and vice versa):

1. DriftStateVerifier service (lib/monitoring/drift-state-verifier.ts)
   - Runs every 10 minutes automatically
   - Checks closed trades (24h) vs actual Drift positions
   - Retries close if mismatch found
   - Sends Telegram alerts

2. Manual verification API (app/api/monitoring/verify-drift-state)
   - POST: Force immediate verification check
   - GET: Service status

3. Integrated into startup (lib/startup/init-position-manager.ts)
   - Auto-starts on container boot
   - First check after 2min, then every 10min

STATUS: Build failing due to TypeScript compilation timeout
Need to fix and deploy, then investigate WHY Position Manager stops.

This addresses symptom (stuck positions) but not root cause (PM stopping).

lib/startup/init-position-manager.ts

@@ -14,6 +14,7 @@ import { startBlockedSignalTracking } from '../analysis/blocked-signal-tracker'
 import { startStopHuntTracking } from '../trading/stop-hunt-tracker'
 import { startSmartValidation } from '../trading/smart-validation-queue'
 import { startDataCleanup } from '../maintenance/data-cleanup'
+import { startDriftStateVerifier } from '../monitoring/drift-state-verifier'
 import { logCriticalError } from '../utils/persistent-logger'
 import { sendPositionClosedNotification } from '../notifications/telegram'
 
@@ -51,6 +52,10 @@ export async function initializePositionManagerOnStartup() {
     console.log('🧠 Starting smart entry validation system...')
     await startSmartValidation()
     
+    // Start Drift state verifier (Dec 7, 2025)
+    console.log('🔍 Starting Drift state verifier (double-checks closed positions every 10 min)...')
+    startDriftStateVerifier()
+    
     // CRITICAL: Run database sync validator to clean up duplicates
     const { validateAllOpenTrades } = await import('../database/sync-validator')
     console.log('🔍 Running database sync validation before Position Manager init...')