**Development Script:**
- Add run_dev.sh for clean development server startup
- Automatically unsets DATABASE_URL to prevent conflicts
- Shows database configuration before starting server
- Provides clear development workflow
**Development Guide:**
- Comprehensive development documentation
- Environment variable troubleshooting
- Database configuration options
- Common issues and solutions
- Development workflow best practices
**Fixes Environment Variable Conflicts:**
- Documents DATABASE_URL interference issue
- Provides permanent and temporary solutions
- Clear instructions for different development scenarios
- Troubleshooting guide for connection errors
**Developer Experience:**
- One-command development startup: ./run_dev.sh
- Clear documentation for all development scenarios
- Troubleshooting guide for common issues
- Environment management best practices
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
