Add comprehensive dependency detection system with cross-platform support:
- DependencyManager: Main orchestrator for dependency validation
- SetupWizard: Auto-trigger logic with InitializeOnLoad
- SetupWizardWindow: Complete EditorWindow implementation
- Platform detectors: Windows, macOS, Linux specific detection
- InstallationOrchestrator: Guided installation workflow
Asset Store compliance features:
- No bundled Python interpreter or UV package manager
- User-guided installation process with platform-specific instructions
- Clean package structure without large binary dependencies
- Fallback modes for incomplete installations
- Clear error messages with actionable guidance
Integration:
- Maintains backward compatibility with existing functionality
- Integrates with existing ServerInstaller and MCP infrastructure
- Adds menu items for manual setup wizard access and dependency checking
- Comprehensive error handling and user guidance