This commit introduces a proper integration test environment for the frontend:
- Creates a test environment option in the frontend installer
- Uses the real backend in Docker containers
- Binds frontend to 127.0.0.1 for local testing only
- Adds automatic verification testing of backend-frontend communication
- Provides scripts to easily start and stop the test environment
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
