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# Type Alias HostSoundSlotId

```typescript
HostSoundSlotId:
    | "app-open"
    | "app-close"
    | "palette-toggle"
    | "chat-toggle"
    | "notify"
    | "error"
    | "permission-ask"
    | "chat-complete"
    | string & {}
```

The closed, host-owned v1 slot vocabulary. The host may add slots in later releases, so treat `targets()` as the runtime authority; unknown slot ids are rejected by the host.