chore(03-01): configure Vitest jsdom environment

- Add test block to vite.config.ts with environment: 'jsdom'
- Add passWithNoTests: true (established project convention)

vite.config.ts

@@ -4,4 +4,8 @@ import tailwindcss from '@tailwindcss/vite';
 
 export default defineConfig({
   plugins: [react(), tailwindcss()],
+  test: {
+    environment: 'jsdom',
+    passWithNoTests: true,
+  },
 });