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

lib/startup/init-position-manager.ts

@@ -0,0 +1,33 @@
+/**
+ * Position Manager Startup Initialization
+ * 
+ * Ensures Position Manager starts monitoring on bot startup
+ * This prevents orphaned trades when the bot restarts
+ */
+
+import { getInitializedPositionManager } from '../trading/position-manager'
+
+let initStarted = false
+
+export async function initializePositionManagerOnStartup() {
+  if (initStarted) {
+    return
+  }
+  
+  initStarted = true
+  
+  console.log('🚀 Initializing Position Manager on startup...')
+  
+  try {
+    const manager = await getInitializedPositionManager()
+    const status = manager.getStatus()
+    
+    console.log(`✅ Position Manager ready - ${status.activeTradesCount} active trades`)
+    
+    if (status.activeTradesCount > 0) {
+      console.log(`📊 Monitoring: ${status.symbols.join(', ')}`)
+    }
+  } catch (error) {
+    console.error('❌ Failed to initialize Position Manager on startup:', error)
+  }
+}