fix(wish-tree): 图片扩展名改为 .jpg

- 实际格式是 JPEG，扩展名从 .png 改为 .jpg
- 大小 332KB，远低于微信 2M 限制

mini/pages/settings/settings.js

@@ -1,3 +1,5 @@
+const versionInfo = require('../../utils/version.js');
+
 Page({
   data: {
     userInfo: null,
@@ -6,7 +8,11 @@ Page({
     solarTime: true,
     showBuddhist: false,
     highlightLunar: true,
-    bookmarks: []
+    bookmarks: [],
+    version: versionInfo.version,
+    buildNumber: versionInfo.buildNumber,
+    buildTime: versionInfo.buildTime,
+    commitSha: versionInfo.commitSha
   },
 
   onLoad() {

mini/pages/settings/settings.wxml

@@ -92,7 +92,8 @@
   <view class="card">
     <view class="section-title">关于</view>
     <view class="text-sm text-muted">
-      <text>老黄历小程序 v1.0.1</text>
+      <text>老黄历小程序 v{{version}}</text>
+      <text class="block mt-1" wx:if="{{buildNumber !== '0'}}">构建 #{{buildNumber}} ({{commitSha}})</text>
       <text class="block mt-1">提供农历、黄历、八字、许愿等功能</text>
     </view>
   </view>

mini/pages/wish-tree/wish-tree.wxml

@@ -35,7 +35,7 @@
     <!-- 许愿树 -->
     <view class="tree-container">
       <image 
-        src="/images/wish-tree.png" 
+        src="/images/wish-tree.jpg" 
         class="tree-image"
         mode="aspectFit"
       />

mini/utils/version.js

@@ -0,0 +1,11 @@
+/**
+ * 版本号配置文件
+ * 此文件由 CI 构建时自动生成，请勿手动修改
+ */
+
+module.exports = {
+  version: "1.0.1", // 会被 CI 替换为实际版本号
+  buildNumber: "0", // 会被 CI 替换为构建编号
+  buildTime: "2026-08-08T00:00:00Z", // 会被 CI 替换为构建时间
+  commitSha: "unknown", // 会被 CI 替换为 Git commit SHA
+};