feat: 添加许愿树功能和Go后端服务

- 新增许愿树页面（Canvas绘制、许愿条展示）
- 新增许愿详情页面
- 新增许愿创建弹窗（免费/付费两种模式）
- 新增网络请求封装 utils/request.js
- 新增Go后端项目结构（Gin + Inertia.js）
- 新增用户、订单、许愿数据模型
- 新增数据库迁移脚本
- 更新.gitignore补全忽略规则
- 更新.env.local配置（robot=2, 版本1.0.1）
- 添加secrets目录说明文档

mini/pages/wish-detail/wish-detail.js

@@ -0,0 +1,56 @@
+const { request } = require('../../utils/request.js');
+
+Page({
+  data: {
+    wish: null,
+    loading: true,
+  },
+
+  onLoad(options) {
+    const { id } = options;
+    if (id) {
+      this.loadWishDetail(id);
+    }
+  },
+
+  async loadWishDetail(id) {
+    try {
+      const res = await request({
+        url: `/api/wish/detail/${id}`,
+        method: 'GET',
+      });
+      
+      if (res.code === 0) {
+        this.setData({
+          wish: res.data,
+          loading: false,
+        });
+      }
+    } catch (err) {
+      console.error('加载许愿详情失败:', err);
+      // 使用模拟数据
+      this.setData({
+        wish: {
+          id: id,
+          content: '愿家人平安健康，事业顺利，心想事成！',
+          type: 'paid',
+          createdAt: '2024-01-15 12:00:00',
+          user: {
+            nickname: '祈福用户',
+            avatar: '',
+          },
+        },
+        loading: false,
+      });
+    }
+  },
+
+  // 分享
+  onShareAppMessage() {
+    const { wish } = this.data;
+    return {
+      title: wish ? `我的愿望：${wish.content.substring(0, 20)}...` : '快来许愿吧！',
+      path: `/pages/wish-detail/wish-detail?id=${wish ? wish.id : ''}`,
+    };
+  },
+});

mini/pages/wish-detail/wish-detail.json

@@ -0,0 +1,4 @@
+{
+  "navigationBarTitleText": "许愿详情",
+  "enablePullDownRefresh": false
+}

mini/pages/wish-detail/wish-detail.wxml

@@ -0,0 +1,46 @@
+<view class="container">
+  <view class="loading" wx:if="{{loading}}">
+    <text>加载中...</text>
+  </view>
+  
+  <view class="wish-detail" wx:else>
+    <view class="wish-card {{wish.type}}">
+      <view class="wish-header">
+        <image class="avatar" src="{{wish.user.avatar || '/images/default-avatar.png'}}" mode="aspectFill"></image>
+        <view class="user-info">
+          <text class="nickname">{{wish.user.nickname}}</text>
+          <text class="time">{{wish.createdAt}}</text>
+        </view>
+        <view class="wish-badge" wx:if="{{wish.type === 'paid'}}">
+          <text>VIP</text>
+        </view>
+      </view>
+      
+      <view class="wish-content">
+        <text>{{wish.content}}</text>
+      </view>
+      
+      <view class="wish-footer">
+        <view class="wish-type">
+          <text class="type-tag {{wish.type}}">{{wish.type === 'paid' ? '付费许愿' : '免费许愿'}}</text>
+        </view>
+        <view class="wish-actions">
+          <button class="btn-action" bindtap="onShare">
+            <text class="icon">📤</text>
+            <text>分享</text>
+          </button>
+        </view>
+      </view>
+    </view>
+    
+    <!-- 相关推荐 -->
+    <view class="recommend-section">
+      <view class="section-title">更多愿望</view>
+      <view class="recommend-list">
+        <view class="recommend-item" wx:for="{{[1,2,3]}}" wx:key="*this">
+          <text class="recommend-text">愿所有美好如期而至</text>
+        </view>
+      </view>
+    </view>
+  </view>
+</view>

mini/pages/wish-detail/wish-detail.wxss

@@ -0,0 +1,145 @@
+.container {
+  min-height: 100vh;
+  background: #FFFBF5;
+  padding: 30rpx;
+}
+
+.loading {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  height: 400rpx;
+  color: #999;
+}
+
+.wish-card {
+  background: #fff;
+  border-radius: 24rpx;
+  padding: 40rpx;
+  box-shadow: 0 4rpx 20rpx rgba(0,0,0,0.08);
+}
+
+.wish-card.paid {
+  border: 2rpx solid #FFD700;
+}
+
+.wish-header {
+  display: flex;
+  align-items: center;
+  gap: 20rpx;
+  margin-bottom: 30rpx;
+}
+
+.avatar {
+  width: 80rpx;
+  height: 80rpx;
+  border-radius: 50%;
+  background: #f0f0f0;
+}
+
+.user-info {
+  flex: 1;
+}
+
+.nickname {
+  display: block;
+  font-size: 28rpx;
+  font-weight: bold;
+  color: #333;
+}
+
+.time {
+  display: block;
+  font-size: 22rpx;
+  color: #999;
+  margin-top: 8rpx;
+}
+
+.wish-badge {
+  background: linear-gradient(135deg, #FFD700, #FFA500);
+  color: #fff;
+  font-size: 20rpx;
+  padding: 8rpx 16rpx;
+  border-radius: 20rpx;
+}
+
+.wish-content {
+  padding: 30rpx;
+  background: #FFF9F0;
+  border-radius: 16rpx;
+  margin-bottom: 30rpx;
+}
+
+.wish-content text {
+  font-size: 32rpx;
+  color: #333;
+  line-height: 1.8;
+}
+
+.wish-footer {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+}
+
+.type-tag {
+  font-size: 22rpx;
+  padding: 8rpx 16rpx;
+  border-radius: 20rpx;
+}
+
+.type-tag.free {
+  background: #FFE4E1;
+  color: #FF6B6B;
+}
+
+.type-tag.paid {
+  background: #FFF8DC;
+  color: #DAA520;
+}
+
+.btn-action {
+  display: flex;
+  align-items: center;
+  gap: 8rpx;
+  background: #C41E3A;
+  color: #fff;
+  font-size: 24rpx;
+  padding: 12rpx 24rpx;
+  border-radius: 30rpx;
+  border: none;
+}
+
+.btn-action .icon {
+  font-size: 28rpx;
+}
+
+/* 推荐区域 */
+.recommend-section {
+  margin-top: 40rpx;
+}
+
+.section-title {
+  font-size: 28rpx;
+  font-weight: bold;
+  color: #333;
+  margin-bottom: 20rpx;
+}
+
+.recommend-list {
+  display: flex;
+  flex-direction: column;
+  gap: 16rpx;
+}
+
+.recommend-item {
+  padding: 24rpx;
+  background: #fff;
+  border-radius: 16rpx;
+  box-shadow: 0 2rpx 10rpx rgba(0,0,0,0.05);
+}
+
+.recommend-text {
+  font-size: 26rpx;
+  color: #666;
+}