feat(ui): setAutoStart binding + auto_start in AppSettings

src/lib/api.ts

@@ -336,6 +336,9 @@ export interface AppSettings {
   audio_output_device: string | null;
   microphone_enabled: boolean;
   audio_input_device: string | null;
+  /** Launch WhispAssist at login (opt-in, off by default; NFR-RES-4). Toggled
+   * via setAutoStart, which writes a per-user Run entry (no admin). */
+  auto_start: boolean;
 }
 
 // Feature brief — agent-ready spec distilled from a meeting (ADR-0011).
@@ -417,6 +420,7 @@ export const api = {
   listInputDevices: () => invoke<AudioDeviceInfo[]>("list_input_devices"),
   setPreferredBackend: (backend: BackendId | "auto") =>
     invoke<void>("set_preferred_backend", { args: { backend } }),
+  setAutoStart: (enabled: boolean) => invoke<void>("set_auto_start", { enabled }),
   downloadNpuPackage: () => invoke<void>("download_npu_package"),
   downloadDirectmlPackage: () => invoke<void>("download_directml_package"),
   listModels: () => invoke<ModelInfo[]>("list_models"),