- 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.