- Added PermissionManager class for managing sudo permissions. - Introduced HostsManager class for high-level operations on hosts file. - Implemented methods for entering/exiting edit mode, toggling entries, moving entries, updating entries, saving the hosts file, and restoring backups. - Integrated permission validation and backup creation during edit operations. - Enhanced main application to support edit mode and associated actions. - Added tests for PermissionManager and HostsManager to ensure functionality and error handling.  | 
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| .. | ||
| activeContext.md | ||
| productContext.md | ||
| progress.md | ||
| projectbrief.md | ||
| systemPatterns.md | ||
| techContext.md | ||