[Feature Request] Migrate Claude Code to Toad Terminal UI Framework

Feature Request Summary

Replace Claude Code's current terminal interface with Will McGugan's Toad framework to resolve critical UX issues and provide a modern, responsive terminal experience.

Current Problems with Existing UI

Critical Performance Issues

• View races/teleports up and down the buffer uncontrollably, requiring session termination
• Scrolling becomes painfully slow after large sessions or compaction
• UI jumps to buffer start automatically every ~15 seconds during work
• Terminal "jumps" and "skips" with multiple terminals or certain shells (fish)

Text Input/Output Issues

• Multi-line pastes get truncated or freeze the CLI entirely
• Copied text gains unwanted formatting characters
• Bracketed-paste mode corrupts text input
• Text selection copies unwanted line numbers/prefixes

Accessibility Concerns

• Current terminal-first UI favors Vim/Emacs/power-terminal users
• Not friendly to developers using standard terminal environments

Proposed Solution: Toad Integration

Technical Benefits

• Flicker-free updates: Partial region updates as small as single characters eliminate visual disruptions
• Enhanced text interaction: Proper text selection and copying without formatting corruption
• Architectural separation: Front-end (Python/Textual) separated from back-end for better maintainability
• Performance optimization: Smooth scrolling, minimal startup overhead (~100ms)
• Cross-platform compatibility: Works efficiently on low-power devices

User Experience Improvements

• Stable viewport: Eliminates buffer racing and unwanted scrolling
• Reliable paste operations: Proper handling of multi-line content
• Clean text copying: No extra formatting or line number artifacts
• Responsive interface: Consistent performance across different terminal environments

Advanced Features

• Interactive UI elements (contextual menus, inline editing)
• Real-time streaming of markdown responses
• JSON-based communication protocol for extensibility
• Potential for future multi-platform interfaces

Expected Impact

Immediate Benefits

• Elimination of current critical UX bugs
• Improved accessibility for all developer types
• Reliable text input/output operations

Long-term Benefits

• Modern, maintainable codebase architecture
• Foundation for future UI enhancements
• Better cross-platform compatibility

Technical Implementation Details

Toad Framework Advantages

• Built with Textual for advanced terminal UI capabilities
• Separates front-end presentation from back-end processing
• Language-agnostic backend implementations possible
• Minimal resource usage and fast startup times

Key Features to Implement

1. Stable Buffer Management: Prevent unwanted scrolling and jumping
2. Enhanced Text Operations: Proper multi-line paste, clean copy operations
3. Responsive UI: Smooth scrolling and consistent performance
4. Cross-Shell Compatibility: Works reliably with fish, zsh, bash, etc.

References

• Toad announcement: https://willmcgugan.github.io/announcing-toad/
• Toad in its end-of-July state https://www.youtube.com/watch?v=EKsCS54xduo
• Textual framework: https://github.com/Textualize/textual