chore: 清理冗余代码并补全私信/搜索/故事/通知功能

- 删除未使用的空组件目录、死代码导出(clearAuth/calcDistance/COLORS/
  AVATAR_GRADIENTS/Message/TabBarItem/deletePost/uploadImage/getFileURL/
  _initLogin)，确保程序仍可正常运行
- 新增 8 个云函数并补全对应页面逻辑：getMessages/sendMessage(私信聊天)、
  getHotTopics/searchPosts/searchUsers(搜索)、getStory(故事，复用 posts
  集合)、getNotifications/markAllRead(基于点赞评论聚合的通知系统)
- 在 cloudbaserc.json 中注册全部新云函数，并通过 --deployMode zip 完成部署

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

cloudfunctions/getStory/index.js

@@ -0,0 +1,51 @@
+const cloud = require('wx-server-sdk')
+cloud.init({ env: cloud.DYNAMIC_CURRENT_ENV })
+const db = cloud.database()
+const _ = db.command
+const ONE_DAY_MS = 24 * 3600 * 1000
+
+// 项目暂未建立独立的"故事"集合，这里把指定用户最近(24小时内)发布的
+// 带图片动态包装成"故事"展示，作为 Stories 功能的轻量实现
+exports.main = async (event, context) => {
+  const id = (event && event.id) || ''
+  if (!id) return { code: -1, message: '缺少用户ID' }
+
+  try {
+    const since = new Date(Date.now() - ONE_DAY_MS)
+    let postsRes = await db.collection('posts')
+      .where({ authorId: id, createdAt: _.gte(since) })
+      .orderBy('createdAt', 'desc')
+      .limit(20)
+      .get()
+
+    let posts = postsRes.data.filter(p => Array.isArray(p.images) && p.images.length > 0)
+
+    if (posts.length === 0) {
+      // 兜底：取该用户最近一条带图动态
+      const fallbackRes = await db.collection('posts')
+        .where({ authorId: id })
+        .orderBy('createdAt', 'desc')
+        .limit(20)
+        .get()
+      posts = fallbackRes.data.filter(p => Array.isArray(p.images) && p.images.length > 0).slice(0, 1)
+    }
+
+    if (posts.length === 0) return { code: 0, data: [] }
+
+    const userRes = await db.collection('users').where({ openid: id }).field({ nickName: true }).get()
+    const authorName = (userRes.data[0] && userRes.data[0].nickName) || '宠物爱好者'
+
+    const stories = posts.map(p => ({
+      _id: p._id,
+      authorId: p.authorId,
+      authorName,
+      imageUrl: p.images[0],
+      text: p.content || '',
+      createdAt: p.createdAt,
+    }))
+
+    return { code: 0, data: stories }
+  } catch (e) {
+    return { code: -1, message: e.message }
+  }
+}

cloudfunctions/getStory/package.json

@@ -0,0 +1 @@
+{ "name": "getStory", "version": "1.0.0", "main": "index.js", "dependencies": { "wx-server-sdk": "~2.1.2" } }