feat(vue-app,flask): Vue 试验田全量对接与 Session 用户上下文统一

新增 vue-app（生成/收藏/历史/登录/优化/Android/饭菜/诗词/简历等），Flask 增加 user_context 并调整历史、生成、简历等路由；模板 base/generate 可访问性改进；补充部署说明与文档。

Made-with: Cursor

vue-app/src/views/HomeView.vue

@@ -0,0 +1,92 @@
+<script setup lang="ts">
+import { useAuthStore } from '@/stores/auth'
+
+const auth = useAuthStore()
+const flaskOrigin = import.meta.env.VITE_FLASK_ORIGIN || ''
+const generateUrl = flaskOrigin ? `${flaskOrigin}/` : '/'
+
+function openLegacyGenerate() {
+  window.location.href = generateUrl
+}
+</script>
+
+<template>
+  <div class="home">
+    <el-card shadow="never" class="hero">
+      <h1>Vue 3 前端试验田</h1>
+      <p class="lead">
+        与现有 Flask 后端并行开发：开发时 Vite 将 <code>/api</code>、<code>/poetry</code>、<code>/static</code> 代理到后端；会话使用 Cookie（
+        <code>withCredentials</code>
+        ）。建议开发使用 <strong>127.0.0.1:3000</strong>。经典版生成页也可从顶部 <strong>更多</strong> 菜单进入。
+      </p>
+      <el-space wrap>
+        <el-button type="primary" @click="$router.push({ name: 'generate' })">Vue 提示词生成</el-button>
+        <el-button @click="$router.push({ name: 'optimization' })">提示词优化</el-button>
+        <el-button @click="$router.push({ name: 'resume-optimization' })">简历 / 求职信</el-button>
+        <el-button @click="openLegacyGenerate">经典生成页（Flask）</el-button>
+        <el-button @click="$router.push({ name: 'favorites' })">收藏列表</el-button>
+        <el-button @click="$router.push({ name: 'history' })">优化历史</el-button>
+        <el-button @click="$router.push({ name: 'meal-planning' })">饭菜规划</el-button>
+        <el-button @click="$router.push({ name: 'poetry' })">古诗词</el-button>
+        <el-button @click="$router.push({ name: 'android-tools' })">Android 工具</el-button>
+        <el-button @click="$router.push({ name: 'profile' })">个人资料</el-button>
+      </el-space>
+    </el-card>
+
+    <el-card shadow="never" class="status">
+      <template #header>会话状态</template>
+      <p v-if="!auth.ready">正在检测登录状态…</p>
+      <template v-else>
+        <p v-if="auth.loggedIn">
+          已登录：<strong>{{ auth.nickname || auth.userId }}</strong>
+        </p>
+        <p v-else>未登录（收藏接口仍可能按访客策略返回数据，取决于后端）。</p>
+      </template>
+    </el-card>
+  </div>
+</template>
+
+<style scoped lang="scss">
+@use '@/assets/styles/variables' as *;
+
+.home {
+  display: flex;
+  flex-direction: column;
+  gap: 1.25rem;
+}
+
+.hero {
+  border-radius: 12px;
+  border: 1px solid $border-color;
+
+  h1 {
+    margin: 0 0 0.75rem;
+    font-size: 1.5rem;
+    color: $text-color;
+  }
+}
+
+.lead {
+  margin: 0 0 1.25rem;
+  line-height: 1.65;
+  color: $text-secondary;
+  font-size: 0.95rem;
+
+  code {
+    font-size: 0.85em;
+    padding: 0.1em 0.35em;
+    background: $gray-100;
+    border-radius: 4px;
+  }
+}
+
+.status {
+  border-radius: 12px;
+  border: 1px solid $border-color;
+
+  p {
+    margin: 0;
+    color: $text-secondary;
+  }
+}
+</style>