Improve sessions dialog

[dgageot]

• tab completion
• handle mouse click events

[docker-agent]

Review Summary

Analyzed the double-click functionality added to the session browser dialog. The implementation is sound and safe in Bubble Tea's single-threaded event loop model.

What Was Reviewed

✅ Double-click detection logic - Correctly handles timing and index tracking
✅ Mouse position to index conversion - Proper bounds checking in mouseYToSessionIndex()
✅ Array access safety - All d.filtered accesses are bounds-checked
✅ Concurrency safety - No race conditions (single-threaded event loop)
✅ Zero-value initialization - Safe handling of lastClickTime and lastClickIndex
✅ Test coverage - Comprehensive tests for single-click, double-click, and out-of-bounds scenarios

Key Findings

No bugs found. The code leverages Bubble Tea's single-threaded event loop correctly:

• All state mutations happen sequentially within Update()
• Mouse click handling properly validates indices before access
• Double-click detection safely handles zero-value initialization
• String formatting change is minor and doesn't affect functionality

The implementation is production-ready. Nice work on the comprehensive test coverage! 🚀