test(ext): vitest + router sender-check + origin-bound autofill

extension/vitest.config.ts

@@ -0,0 +1,8 @@
+import { defineConfig } from 'vitest/config';
+
+export default defineConfig({
+  test: {
+    environment: 'happy-dom',
+    include: ['src/**/__tests__/**/*.test.ts'],
+  },
+});