- Added command classes: ToggleEntryCommand, MoveEntryCommand, AddEntryCommand, DeleteEntryCommand, UpdateEntryCommand. - Integrated UndoRedoHistory to manage command execution and history. - Updated HostsManager to use command-based methods for editing entries with undo/redo support. - Enhanced HostsManagerApp to display undo/redo status and handle undo/redo actions via keyboard shortcuts. - Refactored navigation handler to utilize command-based methods for toggling and moving entries. - Created comprehensive tests for command classes and integration with HostsManager.  | 
			||
|---|---|---|
| .. | ||
| activeContext.md | ||
| productContext.md | ||
| progress.md | ||
| projectbrief.md | ||
| systemPatterns.md | ||
| techContext.md | ||