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

lib/trading/position-manager.ts

@@ -286,7 +286,17 @@ export class PositionManager {
       const marketConfig = getMarketConfig(trade.symbol)
       const position = await driftService.getPosition(marketConfig.driftMarketIndex)
       
+      // Calculate trade age in seconds
+      const tradeAgeSeconds = (Date.now() - trade.entryTime) / 1000
+      
       if (position === null || position.size === 0) {
+        // IMPORTANT: Skip "external closure" detection for NEW trades (<30 seconds old)
+        // Drift positions may not be immediately visible after opening due to blockchain delays
+        if (tradeAgeSeconds < 30) {
+          console.log(`⏳ Trade ${trade.symbol} is new (${tradeAgeSeconds.toFixed(1)}s old) - skipping external closure check`)
+          return // Skip this check cycle, position might still be propagating
+        }
+        
         // Position closed externally (by on-chain TP/SL order)
         console.log(`⚠️ Position ${trade.symbol} was closed externally (by on-chain order)`)
       } else {