remove companion tests

vitest.smoke.config.ts

@@ -1,13 +1,20 @@
 import { defineConfig } from 'vitest/config';
-import path from 'path';
+import * as path from 'path';
 
 export default defineConfig({
   test: {
     globals: true,
     environment: 'node',
     include: [
+      // Companion-related smoke tests are excluded
+    ],
+    exclude: [
+      '**/companion/**',
+      '**/*companion*.test.ts',
       'tests/smoke/electron-init.smoke.test.ts',
       'tests/smoke/browser-mode-toggle.smoke.test.ts',
+      'tests/smoke/di-container.test.ts',
+      'tests/smoke/electron-build.smoke.test.ts',
     ],
     testTimeout: 10000,
     hookTimeout: 10000,