fix(sonar): handle app.whenReady rejection on startup (typescript:S9383)

Replace the bare 'void' on the app.whenReady().then(...) startup chain
with a .catch handler that logs startup failures via electron-log. A
rejection in onFirstRunMaybe() (which awaits dialog.showMessageBox) or
any register*/initialize handler would otherwise be left unhandled in
the main process, silently skipping IPC handler registration or
crashing the app depending on Node's unhandled-rejection mode.

Author: setchy

src/main/index.test.ts

@@ -0,0 +1,120 @@
+import './index';
+
+const { calls, menubarOptions, menubarMock } = vi.hoisted(() => ({
+  calls: [] as string[],
+  menubarOptions: [] as unknown[],
+  menubarMock: vi.fn((options: unknown) => {
+    menubarOptions.push(options);
+    return { window: {} };
+  }),
+}));
+
+vi.mock('electron', () => ({
+  app: {
+    isPackaged: true,
+    whenReady: vi.fn(() => {
+      calls.push('whenReady');
+      return Promise.resolve();
+    }),
+    setAsDefaultProtocolClient: vi.fn(),
+    on: vi.fn(),
+  },
+}));
+
+vi.mock('electron-log', () => ({
+  default: {
+    initialize: vi.fn(),
+    transports: { file: {} },
+  },
+}));
+
+vi.mock('electron-menubar', () => ({ menubar: menubarMock }));
+
+vi.mock('./config', () => ({
+  Paths: { indexHtml: 'index.html' },
+  WindowConfig: { width: 500, height: 400 },
+}));
+
+vi.mock('./handlers', () => ({
+  registerAppHandlers: vi.fn(),
+  registerGitHubCliHandlers: vi.fn(),
+  registerStorageHandlers: vi.fn(),
+  registerSystemHandlers: vi.fn(),
+  registerTrayHandlers: vi.fn(),
+  registerUpdaterHandlers: vi.fn(),
+}));
+
+vi.mock('./icons', () => ({
+  getIdleTrayIcon: vi.fn(() => 'icon.png'),
+}));
+
+vi.mock('./lifecycle', () => ({
+  configureWindowEvents: vi.fn(),
+  handleProtocolURL: vi.fn(),
+  initializeAppLifecycle: vi.fn(),
+  onFirstRunMaybe: vi.fn(),
+}));
+
+vi.mock('./menu', () => ({
+  default: class {
+    buildMenu() {
+      return {};
+    }
+  },
+}));
+
+vi.mock('./ozone', () => ({
+  applyOzonePlatform: vi.fn(() => calls.push('ozone')),
+}));
+
+vi.mock('./updater', () => ({
+  default: class {},
+}));
+
+describe('main/index.ts', () => {
+  it('configures electron-menubar with the app window settings', () => {
+    expect(menubarOptions).toEqual([
+      {
+        icon: 'icon.png',
+        index: 'index.html',
+        browserWindow: { width: 500, height: 400 },
+        preloadWindow: true,
+        showDockIcon: false,
+        hideOnClose: true,
+        escapeToHide: true,
+      },
+    ]);
+  });
+
+  it('applies the Ozone backend before Electron becomes ready', () => {
+    expect(calls).toEqual(['ozone', 'whenReady']);
+  });
+
+  it('logs an error when Electron fails to become ready', async () => {
+    vi.resetModules();
+    vi.doMock('electron', () => ({
+      app: {
+        isPackaged: true,
+        whenReady: vi.fn(() => Promise.reject(new Error('ready-failed'))),
+        setAsDefaultProtocolClient: vi.fn(),
+        on: vi.fn(),
+      },
+    }));
+    vi.doMock('../shared/logger', () => ({
+      logError: vi.fn(),
+      toError: (err: unknown) => (err instanceof Error ? err : new Error(String(err))),
+    }));
+
+    const { logError } = await import('../shared/logger');
+
+    await import('./index');
+
+    await vi.waitFor(() =>
+      expect(logError).toHaveBeenCalledWith(
+        'main',
+        'Failed to initialize application',
+        expect.any(Error),
+      ),
+    );
+  });
+});

src/main/index.ts

@@ -2,6 +2,8 @@ import { app } from 'electron';
 import log from 'electron-log';
 import { menubar } from 'electron-menubar';
 
+import { logError, toError } from '../shared/logger';
+
 import { Paths, WindowConfig } from './config';
 import {
   registerAppHandlers,
@@ -52,22 +54,27 @@ app.setAsDefaultProtocolClient(protocol);
 
 const appUpdater = new AppUpdater(mb, menuBuilder);
 
-void app.whenReady().then(async () => {
-  await onFirstRunMaybe();
+app
+  .whenReady()
+  .then(async () => {
+    await onFirstRunMaybe();
 
-  initializeAppLifecycle(mb, contextMenu, protocol);
+    initializeAppLifecycle(mb, contextMenu, protocol);
 
-  // Configure window event handlers (Escape key, DevTools resize)
-  configureWindowEvents(mb, menuBuilder);
+    // Configure window event handlers (Escape key, DevTools resize)
+    configureWindowEvents(mb, menuBuilder);
 
-  // Register IPC handlers for various channels
-  registerTrayHandlers(mb);
-  registerSystemHandlers(mb);
-  registerStorageHandlers();
-  registerGitHubCliHandlers();
-  registerAppHandlers(mb);
-  registerUpdaterHandlers(appUpdater);
-});
+    // Register IPC handlers for various channels
+    registerTrayHandlers(mb);
+    registerSystemHandlers(mb);
+    registerStorageHandlers();
+    registerGitHubCliHandlers();
+    registerAppHandlers(mb);
+    registerUpdaterHandlers(appUpdater);
+  })
+  .catch((err) => {
+    logError('main', 'Failed to initialize application', toError(err));
+  });
 
 // Handle gitify:// custom protocol URL events for OAuth 2.0 callback
 app.on('open-url', (event, url) => {