chore(events): remove dead UPDATE_THEME event and onSystemThemeUpdate API

src/preload/index.test.ts

@@ -66,7 +66,6 @@ interface TestApi {
   tray: { updateColor: (n?: number) => void };
   openExternalLink: (u: string, f: boolean) => void;
   app: { version: () => Promise<string>; show?: () => void; hide?: () => void };
-  onSystemThemeUpdate: (cb: (t: string) => void) => void;
   raiseNativeNotification: (t: string, b: string, u?: string) => unknown;
 }
 
@@ -134,24 +133,6 @@ describe('preload/index', () => {
     process.env.NODE_ENV = originalEnv;
   });
 
-  it('onSystemThemeUpdate registers listener', async () => {
-    const api = getExposedApi();
-    const callback = vi.fn();
-    api.onSystemThemeUpdate(callback);
-
-    expect(onRendererEventMock).toHaveBeenCalledWith(
-      EVENTS.UPDATE_THEME,
-      expect.any(Function),
-    );
-
-    // Simulate event
-    const listener = onRendererEventMock.mock.calls[0][1];
-
-    listener({}, 'dark');
-
-    expect(callback).toHaveBeenCalledWith('dark');
-  });
-
   it('raiseNativeNotification without url calls app.show', async () => {
     const api = getExposedApi();
 

src/preload/index.ts

@@ -192,15 +192,6 @@ export const api = {
     onRendererEvent(EVENTS.AUTH_CALLBACK, (_, url) => callback(url));
   },
 
-  /**
-   * Register a callback invoked when the OS system theme changes.
-   *
-   * @param callback - Called with the new theme string (`"light"` or `"dark"`).
-   */
-  onSystemThemeUpdate: (callback: (theme: string) => void) => {
-    onRendererEvent(EVENTS.UPDATE_THEME, (_, theme) => callback(theme));
-  },
-
   /**
    * Display a native OS notification.
    *

src/renderer/__helpers__/vitest.setup.ts

@@ -59,7 +59,6 @@ window.gitify = {
   notificationSoundPath: vi.fn(),
   onAuthCallback: vi.fn(),
   onResetApp: vi.fn(),
-  onSystemThemeUpdate: vi.fn(),
   setAutoLaunch: vi.fn(),
   applyKeyboardShortcut: vi.fn().mockResolvedValue({ success: true }),
   raiseNativeNotification: vi.fn(),

src/shared/events.ts

@@ -21,7 +21,6 @@ export const EVENTS = {
   NOTIFICATION_SOUND_PATH: `${P}notification-sound-path`,
   OPEN_EXTERNAL: `${P}open-external`,
   RESET_APP: `${P}reset-app`,
-  UPDATE_THEME: `${P}update-theme`,
   TWEMOJI_DIRECTORY: `${P}twemoji-directory`,
 } as const;
 
@@ -87,7 +86,6 @@ export type EventContracts = AssertEventCoverage<{
   [EVENTS.NOTIFICATION_SOUND_PATH]: { request: undefined; response: string };
   [EVENTS.OPEN_EXTERNAL]: { request: IOpenExternal; response: undefined };
   [EVENTS.RESET_APP]: { request: undefined; response: undefined };
-  [EVENTS.UPDATE_THEME]: { request: string; response: undefined };
   [EVENTS.TWEMOJI_DIRECTORY]: { request: undefined; response: string };
 }>;