Multi-Terminal Support and Thread Management Optimization

• Multi-Terminal Support: Now supports multiple parallel processes, making it easier to handle scenarios like Monorepo project development.
• Close Root Thread: Users can now manually close the Root Thread in specific cases (e.g., self-merging PRs on GitHub) while still being able to edit files within it, enhancing flexibility in environment configuration.
• Git Push: Added support for directly using git push to push the current branch without manually setting an upstream branch, simplifying the workflow.

User Experience Improvements and Bug Fixes

• Onboarding Process Optimization: Added clear guidance and quick actions to help users get started more efficiently.
• Undo in Input Box: The input box for conversations with ClackyAI now supports Ctrl+Z for undo operations, improving interaction experience.
• UTF-16 File Support: Fixed an issue where UTF-16 encoded files could not be opened, improving file compatibility.