# Cleanup System Improvements

## Problem Identified
The cleanup system was not properly detecting when analysis was finished, causing chromium instances to accumulate and consume all RAM and CPU over time.

## Root Causes
1. **Browser instances not cleaned up after analysis completion**
2. **Session deletion happening before browser cleanup**
3. **Aggressive cleanup being too cautious and skipping actual cleanup**
4. **Missing completion signals from analysis workflow**

## Solutions Implemented

### 1. Enhanced Browser Cleanup (`lib/enhanced-screenshot.ts`)
- Added immediate browser cleanup after analysis completion
- Improved the `cleanup()` method to:
  - Close all browser sessions (AI, DIY, and main)
  - Wait for graceful shutdown
  - Force kill remaining browser processes
  - Clean up temporary files

### 2. Improved Analysis Workflow (`lib/ai-analysis.ts`)
- Added browser cleanup trigger immediately after analysis completes
- Added cleanup trigger even on analysis errors
- Cleanup now happens before session deletion to ensure browsers are closed

### 3. Enhanced API Cleanup (`app/api/enhanced-screenshot/route.js`)
- Added immediate browser cleanup after screenshot capture
- Added cleanup trigger in error handling
- Cleanup now runs regardless of environment (not just development)

### 4. Aggressive Cleanup Improvements (`lib/aggressive-cleanup.ts`)
- `runPostAnalysisCleanup()` now ignores session status since analysis is complete
- More aggressive process termination strategy:
  - Try graceful shutdown (SIGTERM) first
  - Wait 5 seconds for graceful shutdown
  - Force kill (SIGKILL) stubborn processes
- Enhanced temp file and shared memory cleanup
- Force clear stuck progress sessions

### 5. TradingView Automation Cleanup (`lib/tradingview-automation.ts`)
- Improved `forceCleanup()` method to:
  - Close all pages individually first
  - Close browser gracefully
  - Force kill browser process if graceful close fails

### 6. New Monitoring Tools
- **Process Monitor API**: `/api/system/processes`
  - `GET`: Shows current browser processes and active sessions
  - `POST`: Triggers manual aggressive cleanup
- **Test Script**: `test-cleanup-improvements.js`
  - Validates the complete cleanup workflow
  - Monitors processes before/after analysis
  - Tests manual cleanup triggers

## Key Changes Summary

### Cleanup Trigger Points
1. **After analysis completion** (success or error)
2. **After screenshot capture completion**
3. **On API request completion** (success or error)
4. **Manual trigger via `/api/system/processes`**

### Cleanup Strategy
1. **Immediate**: Browser instances closed right after analysis
2. **Graceful**: SIGTERM first, wait 5 seconds
3. **Forceful**: SIGKILL for stubborn processes
4. **Comprehensive**: Temp files, shared memory, stuck sessions

### Detection Improvements
- Post-analysis cleanup ignores session status (since analysis is done)
- Better process age filtering in regular cleanup
- Enhanced process information logging for debugging

## Usage

### Monitor Current Processes
```bash
curl http://localhost:3000/api/system/processes
```

### Trigger Manual Cleanup
```bash
curl -X POST http://localhost:3000/api/system/processes
```

### Test Complete Workflow
```bash
node test-cleanup-improvements.js
```

## Expected Results
- **No accumulating browser processes** after analysis completion
- **RAM usage stays stable** over multiple analysis cycles
- **CPU usage returns to baseline** after each analysis
- **Faster subsequent analysis** due to proper cleanup

## Monitoring Commands
```bash
# Check browser processes
ps aux | grep -E "(chromium|chrome)" | grep -v grep

# Monitor memory usage
free -h

# Check temp directories
ls -la /tmp/puppeteer_dev_chrome_profile-* 2>/dev/null || echo "No temp profiles"
ls -la /dev/shm/.org.chromium.* 2>/dev/null || echo "No shared memory files"
```

The system should now properly clean up all browser instances and associated resources after each analysis cycle, preventing the RAM and CPU accumulation issues.
