fix: emergency automation fix - stop runaway trading loops

- Replace automation service with emergency rate-limited version
- Add 5-minute minimum interval between automation starts
- Implement forced Chromium process cleanup on stop
- Backup broken automation service as .broken file
- Emergency service prevents multiple simultaneous automations
- Fixed 1400+ Chromium process accumulation issue
- Tested and confirmed: rate limiting works, processes stay at 0

lib/enhanced-screenshot.ts

@@ -54,6 +54,7 @@ export class EnhancedScreenshotService {
       }
       
       // Create parallel session promises for true dual-session approach
+      const activeSessions: TradingViewAutomation[] = []
       const sessionPromises = layoutsToCapture.map(async (layout, index) => {
         const layoutKey = layout.toLowerCase()
         let layoutSession: TradingViewAutomation | null = null
@@ -77,6 +78,7 @@ export class EnhancedScreenshotService {
           
           // Create a dedicated automation instance for this layout
           layoutSession = new TradingViewAutomation()
+          activeSessions.push(layoutSession) // Track for cleanup
           
           console.log(`🐳 Starting ${layout} browser session...`)
           await layoutSession.init()
@@ -261,6 +263,20 @@ export class EnhancedScreenshotService {
       console.log(`\n⚡ Executing ${layoutsToCapture.length} sessions in parallel...`)
       const results = await Promise.allSettled(sessionPromises)
       
+      // Cleanup all sessions after capture (success or failure)
+      console.log('🧹 Cleaning up all browser sessions...')
+      await Promise.allSettled(
+        activeSessions.map(async (session, index) => {
+          try {
+            const layout = layoutsToCapture[index]
+            console.log(`🧹 Cleaning up ${layout} session...`)
+            await session.forceCleanup()
+          } catch (cleanupError) {
+            console.warn(`⚠️ Cleanup failed for session ${index}:`, cleanupError)
+          }
+        })
+      )
+      
       // Collect successful screenshots
       results.forEach((result, index) => {
         const layout = layoutsToCapture[index]