`data-shortcut-scope` was read by the shortcut service and set nowhere,
so the two panel-scoped bindings were dead while Settings advertised
them as configurable. These are the bindings the scope mechanism was
built for: autotag's A/S/L/U/F and the arrows, and the track list's
play.
- Create backend/shortcuts/config.go with DefaultBindings(), ApplyDefaults(), Validate()
- Wire Shortcuts field into main Config struct with TOML persistence
- Add GetShortcuts, SetShortcuts, SetShortcut, ResetShortcuts Wails binding methods
- Regenerate Wails TypeScript bindings for new config methods
- Fix wsl lint in library.go (blank line before logger call)
logan
yonlu