* feat: add terminal max width option
- Add terminal preferences manager for persistent settings storage
- Add maxCols property to terminal component with width constraint logic
- Add UI toggle button (∞/80) in session header for easy width control
- Default behavior unchanged: unlimited width (takes full container)
- Optional 80-column max width limit when enabled
- Preferences saved to localStorage and restored on page load
- Real-time updates without page refresh
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
* feat: enhance terminal width selector with common presets and custom input
- Add common terminal width presets: ∞, 80, 100, 120, 132, 160
- Add custom width input field (20-500 columns)
- Replace simple toggle with dropdown selector UI
- Include helpful descriptions for each preset
- Support keyboard shortcuts (Enter to submit, Escape to cancel)
- Add click-outside-to-close functionality
- Maintain all existing preferences persistence
- Show current width in button label and tooltip
Common widths:
- 80: Classic terminal
- 100: Modern standard
- 120: Wide terminal
- 132: Mainframe width
- 160: Ultra-wide
- Custom: User-defined (20-500)
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
* fix: prevent WebSocket send on closed channel panic
Added safeSend helper function with panic recovery to handle race conditions
when multiple goroutines access WebSocket channels. Replaces unsafe channel
sends with graceful error handling.
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
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Co-authored-by: Claude <noreply@anthropic.com>
