feat(ai-character): Mock Preview 모드 구현

vite.config.ts

@@ -1,23 +1,33 @@
 import react from "@vitejs/plugin-react";
 import tailwindcss from "@tailwindcss/vite";
+import { loadEnv } from "vite";
 import { configDefaults, defineConfig } from "vitest/config";
 
-export default defineConfig({
-  plugins: [react(), tailwindcss()],
-  server: {
-    host: "127.0.0.1",
-    port: 8888,
-    strictPort: true,
-  },
-  resolve: {
-    alias: {
-      "@": new URL("./src", import.meta.url).pathname,
+export default defineConfig(({ mode }) => {
+  const environment = loadEnv(mode, process.cwd(), "VITE_");
+
+  if (mode === "production" && environment.VITE_API_MODE === "mock") {
+    throw new Error("VITE_API_MODE=mock is only available during development");
+  }
+
+  return {
+    plugins: [react(), tailwindcss()],
+    publicDir: mode === "production" ? false : "public",
+    server: {
+      host: "127.0.0.1",
+      port: 8888,
+      strictPort: true,
     },
-  },
-  test: {
-    environment: "jsdom",
-    setupFiles: ["./src/shared/test/setup.ts"],
-    globals: true,
-    exclude: [...configDefaults.exclude, "tests/e2e/**"],
-  },
+    resolve: {
+      alias: {
+        "@": new URL("./src", import.meta.url).pathname,
+      },
+    },
+    test: {
+      environment: "jsdom",
+      setupFiles: ["./src/shared/test/setup.ts"],
+      globals: true,
+      exclude: [...configDefaults.exclude, "tests/e2e/**"],
+    },
+  };
 });