- Add DiagnosticRunner integration to Commandocentrum for system health display
- Refactor EmulatorUpdateService from 2524 lines to 395 lines (facade pattern)
- Extract EmulatorStatusService, EmulatorJarService, EmulatorSourceService
- Extract EmulatorBuildService, EmulatorSqlService, EmulatorBackupService
- Add shared EmulatorConfiguration trait for dependency injection
- Preserve backward compatibility on all public methods