- ✅ Created clean ostree_integration.rs module with OSTreeManager
- ✅ Implemented staging deployment creation and management
- ✅ Added atomic package install/remove/upgrade operations
- ✅ Implemented rollback functionality with deployment checking
- ✅ Added system status and rollback availability detection
- ✅ All commands now show actual OSTree workflow when in OSTree system
- ✅ Graceful fallback to simulation when not in OSTree system
- ✅ Clean, maintainable code structure following rpm-ostree patterns
- 🎯 Next: Implement actual chroot and package installation in staging
