# UI Freezing Issue During Long Write Operations

## Issue Summary
The user interface freezes during long write_file operations, preventing real-time feedback and making it difficult to monitor progress or identify issues early in the writing process.

## Problem Description

### Current Behavior:
1. When executing `write_file` with large content, the UI becomes unresponsive
2. Users cannot see any output until the entire write operation completes
3. The first portion of content is not displayed immediately, even though the file is being written
4. This makes debugging and monitoring long write operations extremely difficult

### Expected Behavior:
1. Content should be displayed incrementally as it's written
2. Users should see the beginning of the output immediately
3. There should be a way to toggle into a debug mode that shows full output
4. The UI should remain responsive during write operations

## Impact on User Experience
- **Debugging Difficulty**: Cannot see partial results during long writes
- **User Frustration**: Uncertainty about whether the command is working
- **Productivity Loss**: Time wasted waiting for complete output before seeing any result
- **Error Detection**: Harder to identify where issues occur in large outputs

## Technical Details
This appears to be a UI rendering issue where:
1. The terminal waits for the complete response before displaying anything
2. No incremental updates are shown during the write process
3. The freeze happens regardless of content size (even small files can show this behavior)

## Reproduction Steps
1. Execute a `write_file` command with large content (>1000 lines)
2. Observe that no output appears until the entire write is complete
3. Notice UI becomes unresponsive during the operation

## Suggested Solutions
1. **Incremental Display**: Show content as soon as the first bytes are available
2. **Real-time Updates**: Implement streaming output for long-running operations
3. **Debug Toggle Mode**: Add a mode that shows full output for debugging
4. **Progress Indicators**: Show percentage or byte count during large writes
5. **Async Processing**: Handle writes asynchronously to maintain UI responsiveness

## Test Cases
- Small file write (< 100 lines): Should show immediate output
- Medium file write (100-1000 lines): Should show incremental output
- Large file write (> 1000 lines): Should show initial content immediately and update progressively

## Priority
High - This significantly impacts usability when working with large files or logs.