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>

miniprogram/pages/chat/chat.ts

@@ -18,6 +18,7 @@ Page({
   onLoad(query: { userId?: string }) {
     const info = wx.getSystemInfoSync()
     this.setData({ statusBarHeight: info.statusBarHeight, peerId: query.userId || '' })
+    this.loadPeerInfo()
     this.loadMessages()
     this.subscribeRealtime()
   },
@@ -26,9 +27,18 @@ Page({
     this._watcher?.close()
   },
 
-  async loadMessages() {
+  async loadPeerInfo() {
+    if (!this.data.peerId) return
     try {
-      const res = await api.getMessages()
+      const user = await api.getUserProfile(this.data.peerId)
+      this.setData({ peerName: user.nickName || '宠物爱好者' })
+    } catch {}
+  },
+
+  async loadMessages() {
+    if (!this.data.peerId) return
+    try {
+      const res = await api.getMessages(this.data.peerId)
       const msgs = res.list.map((m: any) => ({
         ...m,
         isMe: m.fromId === app.globalData?.userInfo?._id,

miniprogram/pages/notifications/notifications.ts

@@ -1,3 +1,4 @@
+import { api } from '../../utils/api'
 import { getAvatarGradient, formatTime } from '../../utils/format'
 
 Page({
@@ -11,13 +12,13 @@ Page({
 
   async loadNotifications() {
     try {
-      const res = await wx.cloud.callFunction({ name: 'getNotifications', data: {} }) as any
-      const list = (res.result?.data || []).map((n: any) => ({
+      const list = await api.getNotifications()
+      const enriched = (list || []).map((n: any) => ({
         ...n,
         gradient: getAvatarGradient(n.fromId || ''),
         timeText: formatTime(n.createdAt),
       }))
-      this.setData({ list })
+      this.setData({ list: enriched })
     } catch {}
   },
 
@@ -27,7 +28,7 @@ Page({
   },
 
   onReadAll() {
-    wx.cloud.callFunction({ name: 'markAllRead', data: {} }).catch(() => {})
+    api.markAllRead().catch(() => {})
     const list = this.data.list.map((n: any) => ({ ...n, isRead: true }))
     this.setData({ list })
   },

miniprogram/pages/search/search.ts

@@ -1,3 +1,4 @@
+import { api } from '../../utils/api'
 import { getAvatarGradient } from '../../utils/format'
 
 Page({
@@ -19,8 +20,8 @@ Page({
 
   async loadHotTopics() {
     try {
-      const res = await wx.cloud.callFunction({ name: 'getHotTopics', data: {} }) as any
-      this.setData({ hotTopics: res.result?.data || [] })
+      const topics = await api.getHotTopics()
+      this.setData({ hotTopics: topics || [] })
     } catch {}
   },
 
@@ -38,12 +39,12 @@ Page({
     this.setData({ loading: true })
     try {
       const [posts, users] = await Promise.all([
-        wx.cloud.callFunction({ name: 'searchPosts', data: { keyword: kw } }) as any,
-        wx.cloud.callFunction({ name: 'searchUsers', data: { keyword: kw } }) as any,
+        api.searchPosts(kw),
+        api.searchUsers(kw),
       ])
       this.setData({
-        postResults: posts.result?.data || [],
-        userResults: (users.result?.data || []).map((u: any) => ({
+        postResults: posts || [],
+        userResults: (users || []).map((u: any) => ({
           ...u,
           gradient: getAvatarGradient(u._id),
         })),

miniprogram/pages/story/story.ts

@@ -1,3 +1,4 @@
+import { api } from '../../utils/api'
 import { getAvatarGradient, formatTime } from '../../utils/format'
 
 const DURATION = 5000
@@ -22,15 +23,18 @@ Page({
 
   async loadStory(id: string) {
     try {
-      const res = await wx.cloud.callFunction({ name: 'getStory', data: { id } }) as any
-      const stories = (res.result?.data || []).map((s: any) => ({
+      const list = await api.getStory(id)
+      const stories = (list || []).map((s: any) => ({
         ...s,
         gradient: getAvatarGradient(s.authorId),
         timeText: formatTime(s.createdAt),
       }))
       this.setData({ stories, currentStory: stories[0] || {} })
-      this.startProgress()
-    } catch {}
+      if (stories.length) this.startProgress()
+      else wx.navigateBack()
+    } catch {
+      wx.navigateBack()
+    }
   },
 
   startProgress() {