refactor(app): 移除分类和详情模块，新增云开发测试页

- 从项目中删除分类页及相关代码和样式文件
- 从项目中删除详情页及相关代码和样式文件
- 首页简化为欢迎界面并添加跳转云开发测试页入口
- 更新自定义底部栏移除分类入口
- 更新app.js初始化云开发环境
- 修改app.json移除分类页面配置
- 调整首页样式和交互，提高简洁度
- 配置云函数目录路径cloudfunctionRoot为cloudfunctions/

pages/cloud-test/cloud-test.js

@@ -0,0 +1,179 @@
+// pages/cloud-test/cloud-test.js
+
+Page({
+  data: {
+    logs: [],
+    testData: null,
+    loading: false
+  },
+
+  onLoad() {
+    this.addLog('页面加载完成，云开发测试就绪');
+  },
+
+  // 添加日志
+  addLog(message, type = 'info') {
+    const time = new Date().toLocaleTimeString();
+    const logs = [...this.data.logs, { time, message, type }];
+    this.setData({ logs });
+  },
+
+  // 清空日志
+  onClearLogs() {
+    this.setData({ logs: [] });
+  },
+
+  // 测试云函数
+  async onTestFunction() {
+    this.addLog('开始调用云函数 test...');
+    this.setData({ loading: true });
+
+    try {
+      const res = await wx.cloud.callFunction({
+        name: 'test',
+        data: {
+          action: 'test',
+          timestamp: Date.now()
+        }
+      });
+
+      this.addLog('云函数调用成功', 'success');
+      this.addLog(`返回结果: ${JSON.stringify(res.result)}`, 'success');
+      console.log('云函数返回:', res);
+    } catch (err) {
+      this.addLog(`云函数调用失败: ${err.message}`, 'error');
+      console.error('云函数错误:', err);
+    }
+
+    this.setData({ loading: false });
+  },
+
+  // 测试数据库 - 添加数据
+  async onTestDbAdd() {
+    this.addLog('开始测试数据库添加...');
+    this.setData({ loading: true });
+
+    try {
+      const db = wx.cloud.database();
+      const res = await db.collection('test_collection').add({
+        data: {
+          content: '测试数据',
+          createTime: db.serverDate(),
+          count: Math.floor(Math.random() * 100)
+        }
+      });
+
+      this.addLog('数据添加成功', 'success');
+      this.addLog(`文档ID: ${res._id}`, 'success');
+      this.setData({ testData: { _id: res._id } });
+    } catch (err) {
+      this.addLog(`数据库添加失败: ${err.message}`, 'error');
+      console.error('数据库错误:', err);
+    }
+
+    this.setData({ loading: false });
+  },
+
+  // 测试数据库 - 查询数据
+  async onTestDbQuery() {
+    this.addLog('开始测试数据库查询...');
+    this.setData({ loading: true });
+
+    try {
+      const db = wx.cloud.database();
+      const res = await db.collection('test_collection')
+        .orderBy('createTime', 'desc')
+        .limit(5)
+        .get();
+
+      this.addLog('数据查询成功', 'success');
+      this.addLog(`查询到 ${res.data.length} 条数据`, 'success');
+      
+      res.data.forEach((item, index) => {
+        this.addLog(`[${index + 1}] ${item.content} - count: ${item.count}`, 'info');
+      });
+    } catch (err) {
+      this.addLog(`数据库查询失败: ${err.message}`, 'error');
+      console.error('数据库错误:', err);
+    }
+
+    this.setData({ loading: false });
+  },
+
+  // 测试数据库 - 删除数据
+  async onTestDbDelete() {
+    if (!this.data.testData?._id) {
+      this.addLog('请先添加测试数据', 'error');
+      return;
+    }
+
+    this.addLog('开始测试数据库删除...');
+    this.setData({ loading: true });
+
+    try {
+      const db = wx.cloud.database();
+      await db.collection('test_collection').doc(this.data.testData._id).remove();
+
+      this.addLog('数据删除成功', 'success');
+      this.setData({ testData: null });
+    } catch (err) {
+      this.addLog(`数据库删除失败: ${err.message}`, 'error');
+      console.error('数据库错误:', err);
+    }
+
+    this.setData({ loading: false });
+  },
+
+  // 测试云存储 - 上传图片
+  async onTestStorageUpload() {
+    this.addLog('开始测试云存储上传...');
+
+    try {
+      // 选择图片
+      const chooseRes = await wx.chooseMedia({
+        count: 1,
+        mediaType: ['image'],
+        sourceType: ['album', 'camera']
+      });
+
+      const filePath = chooseRes.tempFiles[0].tempFilePath;
+      const cloudPath = `test/${Date.now()}-${Math.random().toString(36).substr(2)}.png`;
+
+      this.setData({ loading: true });
+      this.addLog('正在上传图片...');
+
+      const uploadRes = await wx.cloud.uploadFile({
+        cloudPath,
+        filePath
+      });
+
+      this.addLog('图片上传成功', 'success');
+      this.addLog(`文件ID: ${uploadRes.fileID}`, 'success');
+
+      // 获取临时链接
+      const urlRes = await wx.cloud.getTempFileURL({
+        fileList: [uploadRes.fileID]
+      });
+
+      if (urlRes.fileList[0].tempFileURL) {
+        this.addLog(`临时链接: ${urlRes.fileList[0].tempFileURL.substr(0, 50)}...`, 'success');
+      }
+    } catch (err) {
+      if (err.errMsg?.includes('cancel')) {
+        this.addLog('用户取消选择', 'info');
+      } else {
+        this.addLog(`上传失败: ${err.message || err.errMsg}`, 'error');
+      }
+      console.error('存储错误:', err);
+    }
+
+    this.setData({ loading: false });
+  },
+
+  // 返回首页
+  onBack() {
+    wx.switchTab({
+      url: '/pages/index/index'
+    });
+  }
+});