fix: Add missing analysis completion flag to enhanced screenshot API

- Add analysisCompletionFlag.startAnalysisCycle() at the beginning of screenshot API
- Add analysisCompletionFlag.markAnalysisComplete() at the end of screenshot API
- This ensures cleanup system can properly detect when analysis is complete
- Fixes issue where cleanup was always skipped due to analysis appearing to still be running
- Critical for preventing Chromium process accumulation during screenshot automation

The enhanced screenshot API was missing completion flag logic that automation service has,
causing cleanup to never trigger properly.

app/api/enhanced-screenshot/route.js

@@ -59,6 +59,15 @@ export async function POST(request) {
     progressTracker.createSession(sessionId, initialSteps)
     console.log('🔍 Progress session created successfully')
 
+    // Mark the start of analysis cycle for cleanup system
+    try {
+      const { analysisCompletionFlag } = await import('../../../lib/analysis-completion-flag')
+      analysisCompletionFlag.startAnalysisCycle(sessionId)
+      console.log(`🔍 Analysis cycle started for session: ${sessionId}`)
+    } catch (flagError) {
+      console.error('Error starting analysis cycle:', flagError)
+    }
+
     // Prepare configuration for screenshot service
     const config = {
       symbol: symbol || 'BTCUSD',
@@ -113,6 +122,15 @@ export async function POST(request) {
       message: `Successfully captured ${screenshots.length} screenshot(s)${analysis ? ' with AI analysis' : ''}`
     }
 
+    // Mark analysis as complete for cleanup system
+    try {
+      const { analysisCompletionFlag } = await import('../../../lib/analysis-completion-flag')
+      analysisCompletionFlag.markAnalysisComplete(sessionId)
+      console.log(`✅ Analysis marked as complete for session: ${sessionId}`)
+    } catch (flagError) {
+      console.error('Error marking analysis complete:', flagError)
+    }
+
     // Trigger post-analysis cleanup in development mode
     if (process.env.NODE_ENV === 'development') {
       try {