feat: add quality score display and timezone fixes

- Add qualityScore to ExecuteTradeResponse interface and response object
- Update analytics page to always show Signal Quality card (N/A if unavailable)
- Fix n8n workflow to pass context metrics and qualityScore to execute endpoint
- Fix timezone in Telegram notifications (Europe/Berlin)
- Fix symbol normalization in /api/trading/close endpoint
- Update Drift ETH-PERP minimum order size (0.002 ETH not 0.01)
- Add transaction confirmation to closePosition() to prevent phantom closes
- Add 30-second grace period for new trades in Position Manager
- Fix execution order: database save before Position Manager.addTrade()
- Update copilot instructions with transaction confirmation pattern

app/api/trading/close/route.ts

@@ -7,12 +7,13 @@
 import { NextRequest, NextResponse } from 'next/server'
 import { closePosition } from '@/lib/drift/orders'
 import { initializeDriftService } from '@/lib/drift/client'
+import { normalizeTradingViewSymbol } from '@/config/trading'
 
 export const dynamic = 'force-dynamic'
 export const runtime = 'nodejs'
 
 interface CloseRequest {
-  symbol: string // e.g., 'SOL-PERP'
+  symbol: string // e.g., 'SOL-PERP' or 'SOLUSDT'
   percentToClose?: number // 0-100, default 100 (close entire position)
 }
 
@@ -46,14 +47,16 @@ export async function POST(request: NextRequest) {
       )
     }
 
-    console.log(`📊 Closing position: ${symbol} (${percentToClose}%)`)
+    // Normalize symbol (SOLUSDT -> SOL-PERP)
+    const driftSymbol = normalizeTradingViewSymbol(symbol)
+    console.log(`📊 Closing position: ${driftSymbol} (${percentToClose}%)`)
 
     // Initialize Drift service if not already initialized
     await initializeDriftService()
 
     // Close position
     const result = await closePosition({
-      symbol,
+      symbol: driftSymbol,
       percentToClose,
       slippageTolerance: 1.0,
     })
@@ -72,7 +75,7 @@ export async function POST(request: NextRequest) {
     return NextResponse.json({
       success: true,
       transactionSignature: result.transactionSignature,
-      symbol,
+      symbol: driftSymbol,
       closePrice: result.closePrice,
       closedSize: result.closedSize,
       realizedPnL: result.realizedPnL,