Add /close command and auto-flip logic with order cleanup

- Added /close Telegram command for full position closure
- Updated /reduce to accept 10-100% (was 10-90%)
- Implemented auto-flip logic: automatically closes opposite position when signal reverses
- Fixed risk check to allow opposite direction trades (signal flips)
- Enhanced Position Manager to cancel orders when removing trades
- Added startup initialization for Position Manager (restores trades on restart)
- Fixed analytics to show stopped-out trades (manual DB update for orphaned trade)
- Updated reduce endpoint to route 100% closes through closePosition for proper cleanup
- All position closures now guarantee TP/SL order cancellation on Drift

app/api/trading/execute/route.ts

@@ -100,6 +100,38 @@ export async function POST(request: NextRequest): Promise<NextResponse<ExecuteTr
       )
     }
 
+    // AUTO-FLIP: Check for existing opposite direction position
+    const positionManager = await getInitializedPositionManager()
+    const existingTrades = Array.from(positionManager.getActiveTrades().values())
+    const oppositePosition = existingTrades.find(
+      trade => trade.symbol === driftSymbol && trade.direction !== body.direction
+    )
+    
+    if (oppositePosition) {
+      console.log(`🔄 Signal flip detected! Closing ${oppositePosition.direction} to open ${body.direction}`)
+      
+      // Close opposite position
+      const { closePosition } = await import('@/lib/drift/orders')
+      const closeResult = await closePosition({
+        symbol: driftSymbol,
+        percentToClose: 100,
+        slippageTolerance: config.slippageTolerance,
+      })
+      
+      if (!closeResult.success) {
+        console.error('❌ Failed to close opposite position:', closeResult.error)
+        // Continue anyway - we'll try to open the new position
+      } else {
+        console.log(`✅ Closed ${oppositePosition.direction} position at $${closeResult.closePrice?.toFixed(4)} (P&L: $${closeResult.realizedPnL?.toFixed(2)})`)
+        
+        // Position Manager will handle cleanup (including order cancellation)
+        // The executeExit method already removes the trade and updates database
+      }
+      
+      // Small delay to ensure position is fully closed
+      await new Promise(resolve => setTimeout(resolve, 1000))
+    }
+
     // Calculate position size with leverage
     const positionSizeUSD = config.positionSize * config.leverage
     
@@ -211,8 +243,7 @@ export async function POST(request: NextRequest): Promise<NextResponse<ExecuteTr
       lastUpdateTime: Date.now(),
     }
 
-    // Add to position manager for monitoring
-    const positionManager = await getInitializedPositionManager()
+    // Add to position manager for monitoring (reuse positionManager from above)
     await positionManager.addTrade(activeTrade)
     
     console.log('✅ Trade added to position manager for monitoring')