fix: Emergency position close when exit orders missing (Bug #76 enforcement)

- Changed execute endpoint from warning-only to active enforcement
- When placeExitOrders() returns < expected signatures, immediately:
  1. Close the position 100% (emergency safety)
  2. Return HTTP 500 error (prevent DB record creation)
  3. Log critical error for post-mortem
- Prevents unprotected positions from being created in database
- Root cause: Previous fix validated but continued execution
- Result: No more positions without stop loss protection

Deployed: Dec 10, 2025 11:42 CET
Container: trading-bot-v4
Build: sha256:d576e7c5d421

app/api/trading/execute/route.ts

@@ -973,9 +973,12 @@ export async function POST(request: NextRequest): Promise<NextResponse<ExecuteTr
           
           // CRITICAL: Close the unprotected position immediately
           try {
-            const driftService = getDriftService()
-            const closeResult = await driftService.closePosition(driftMarketIndex, 100)
-            console.log(`✅ Emergency closed unprotected position: ${closeResult}`)
+            const closeResult = await closePosition({
+              symbol: driftSymbol,
+              percentToClose: 100,
+              slippageTolerance: config.slippageTolerance || 0.01
+            })
+            console.log(`✅ Emergency closed unprotected position:`, closeResult)
           } catch (closeError) {
             console.error(`❌ Failed to emergency close unprotected position:`, closeError)
           }