chore: 将前端移动到 client/ 目录，准备合并为单仓库

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

client/src/App.vue

@@ -0,0 +1,64 @@
+<script setup lang="ts">
+import { dateZhCN, zhCN } from "naive-ui"
+import type { GlobalThemeOverrides } from "naive-ui"
+import Login from "./components/Login.vue"
+import { onMounted, watch } from "vue"
+import { Account } from "./api"
+import { authed, user } from "./store/user"
+import { STORAGE_KEY } from "./utils/const"
+import hljs from "highlight.js/lib/core"
+
+const themeOverrides: GlobalThemeOverrides = {
+  common: {
+    borderRadius: "6px",
+    borderRadiusSmall: "4px",
+  },
+  Card: {
+    borderRadius: "8px",
+  },
+}
+
+onMounted(async () => {
+  try {
+    const data = await Account.getMyProfile()
+    user.loaded = true
+    user.username = data.username
+    user.role = data.role
+  } catch {
+    user.loaded = true
+  }
+})
+
+watch(authed, (v) => {
+  if (v) {
+    localStorage.setItem(STORAGE_KEY.LOGIN, "true")
+  } else {
+    localStorage.removeItem(STORAGE_KEY.LOGIN)
+  }
+})
+</script>
+
+<template>
+  <n-config-provider
+    class="myContainer"
+    :locale="zhCN"
+    :date-locale="dateZhCN"
+    :hljs="hljs"
+    :theme-overrides="themeOverrides"
+  >
+    <n-modal-provider>
+      <n-message-provider :max="1">
+        <n-dialog-provider>
+          <router-view></router-view>
+          <Login />
+        </n-dialog-provider>
+      </n-message-provider>
+    </n-modal-provider>
+  </n-config-provider>
+</template>
+<style scoped>
+.myContainer {
+  height: 100vh;
+  width: 100vw;
+}
+</style>