- Platform.Process(accelerator) for programmatic trigger
- TaskProcess IPC task with ActionTriggered broadcast
- ErrorNotRegistered sentinel for remove/process on unknown bindings
- 5 new tests: process good/bad/ugly, remove sentinel, concurrent adds
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Implements pkg/keybinding with three-layer pattern: IPC Bus -> Service -> Platform.
Service maintains in-memory registry, ErrAlreadyRegistered on duplicates.
QueryList reads from service registry, not platform.GetAll().
ActionTriggered broadcast on shortcut trigger via platform callback.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
