- Eliminated duplicate platform stubs: Created shared macro for macOS/Linux implementations
- Extracted cursor restoration logic: Shared helper function for Windows API calls
- Refactored cursor application: Helper function for copy/apply/error handling pattern
- Reduced ~70 lines of duplicate code while maintaining all functionality
- Extract cursor application logic into apply_cursor_by_index() helper
- Extract cleanup logic into perform_app_cleanup() helper
- Update select_cursor(), next_cursor(), and system tray handlers to use helpers
- Reduce ~55 lines of duplicated code while maintaining functionality
- Mark step 1 of code cleanup TODO as completed