- NSTextView-based syntax highlighting with regex tokenizer
- Swift, C/C++, ObjC, JSON keywords, types, strings, comments
- Theme-aware coloring, debounced re-highlighting
- Workspace-wide search across all source files
- Grouped results by file with line numbers
- Scope toggle: current file vs all files
- Git status badges on file tree nodes
- GitService changes flow to FileNode.gitStatus
- Agent file operations refresh file tree
- Auto-restore last workspace on launch
- All tests passing (0 errors, 0 warnings)
cx-git-agent