refactor: 프론트 템플릿 리펙토링

vitest.config.ts

@@ -1,5 +1,11 @@
 import { configDefaults, defineConfig } from "vitest/config";
 
+// Tests must not inherit a caller's production React/runtime selection.
+// Package scripts also launch Vitest through scripts/run-vitest.ts, which owns
+// NODE_ENV before the Vitest process starts. Keeping the config deterministic
+// protects direct `vitest` invocations as well.
+process.env.NODE_ENV = "test";
+
 export default defineConfig({
   test: {
     globals: false,