Step F1：前端工程骨架 & 登录鉴权

frontend/vite.config.ts

@@ -0,0 +1,16 @@
+import { defineConfig } from "vite";
+import vue from "@vitejs/plugin-vue";
+
+export default defineConfig({
+  plugins: [vue()],
+  server: {
+    host: true,
+    port: 5173,
+    proxy: {
+      "/api": {
+        target: "http://backend:8000",
+        changeOrigin: true,
+      },
+    },
+  },
+});