- New `gostations fav` subcommand with `list`, `add`, `del` (supports index, URL, or search flags)
- TUI favorites toggle via `f` key; favorites auto-detected on load for "Your Favorites" title
- Pressing ENTER while filtering performs a server-side search and refreshes the list
- Default TUI now loads favorites if present, otherwise falls back to broad station lookup
- Added `sortedForDisplay` for stable fav list ordering and index-based deletion
- Tests for favorites title heuristic, sorted display, and fav del-by-index integration
Added comprehensive unit and live integration tests in new files:
- commander_test.go: Covers isInstalled and subExecute functions
- filer_test.go: Covers createIniFile with various scenarios
- radiomenu_test.go: Covers Short, Quit, and RadioMenu
- stations_test.go: Covers showVersion and precheck
These tests ensure reliability across happy paths, edge cases, and live environments.
