Feat: Browser Control

[TerminallyLazy]

VNC-Based Browser Control Implementation

Summary

• ✅ Direct VNC Access: Implement "Take over browser" button that opens VNC interface at vnc_lite.html
• ✅ Environment Variable Authentication: Configure VNC password via VNC_PASSWORD environment variable with secure fallback
• ✅ Dynamic Password Retrieval: Add API endpoint to fetch current VNC password for user authentication
• ✅ Docker Integration: Complete supervisord configuration with x11vnc server and password protection
• ✅ Code Cleanup: Remove unused VNC infrastructure files with comprehensive backup system

Test plan

• [ ] Build and run Docker container with browser control
• [ ] Click "Take over browser" button in UI
• [ ] Verify VNC password dialog displays correct password
• [ ] Confirm VNC interface opens at http://localhost:56080/vnc_lite.html
• [ ] Test VNC authentication with displayed password
• [ ] Verify browser control functionality through VNC
• [ ] Test custom password via VNC_PASSWORD environment variable
• [ ] Confirm popup blocking fallback works correctly

Technical Implementation

Core Features

• VNC Integration: Direct integration with x11vnc server via supervisord
• Password Management: Environment variable-based authentication with API retrieval
• Web UI Enhancement: Seamless "Take over browser" button integration
• Error Handling: Comprehensive popup blocking detection and fallback mechanisms

Files Added/Modified

• docker/run/fs/etc/supervisor/conf.d/supervisord.conf - VNC server configuration
• docker/docker-compose.browser-control.yml - Environment variable support
• python/api/browser_control.py - VNC password API endpoint
• webui/js/messages.js - Enhanced takeControl() function
• docker/.env.example - Environment configuration template

Files Cleaned Up (Backed up to /backups/)

• Removed 9 unused VNC infrastructure files
• Created comprehensive backup system with recovery instructions
• Generated detailed cleanup report documentation

Security Considerations

• VNC authentication required via configurable password
• Environment variable-based password management
• No hardcoded credentials in source code
• Secure API endpoint for password retrieval