feat: 优化分享标题格式，添加货源描述字段

pages/goods-detail/goods-detail.js

@@ -11,6 +11,88 @@ function getSourceTypeColor(sourceType) {
   return colorMap[sourceType] || '#4d9dff';
 }
 
+// 格式化分享标题 - 按优先级: 规格、地区、数量(鸡场直销-三方货源)、蛋黄颜色、蛋壳颜色
+function formatShareTitle(goodsDetail) {
+  console.log('===== formatShareTitle 开始 =====');
+  console.log('goodsDetail:', JSON.stringify(goodsDetail, null, 2));
+  
+  const titleParts = [];
+  
+  // 1. 规格 (specification/spec)
+  const specification = (goodsDetail.specification || goodsDetail.spec || goodsDetail.specs || '').trim();
+  console.log('specification:', specification);
+  if (specification) {
+    titleParts.push(specification);
+  }
+  
+  // 2. 地区 (region)
+  const region = (goodsDetail.region || '').trim();
+  console.log('region:', region);
+  if (region) {
+    titleParts.push(region);
+  }
+  
+  // 3. 数量 + (鸡场直销-三方货源)
+  const quantity = (goodsDetail.quantity || '').trim();
+  const sourceType = (goodsDetail.sourceType || '').trim();
+  console.log('quantity:', quantity, 'sourceType:', sourceType);
+  if (quantity) {
+    const sourceLabel = sourceType ? `(${sourceType})` : '';
+    titleParts.push(`${quantity}件${sourceLabel}`);
+  } else if (sourceType) {
+    titleParts.push(`(${sourceType})`);
+  }
+  
+  // 4. 蛋黄颜色 (yolk)
+  const yolk = (goodsDetail.yolk || '').trim();
+  console.log('yolk:', yolk);
+  if (yolk) {
+    titleParts.push(yolk);
+  }
+  
+  // 5. 蛋壳颜色 (eggshell) - 使用品种(breed)作为备选
+  const eggshell = (goodsDetail.eggshell || goodsDetail.shell || goodsDetail.breed || '').trim();
+  console.log('eggshell:', eggshell);
+  if (eggshell) {
+    titleParts.push(eggshell);
+  }
+  
+  // 6. 货源描述 (description)
+  const description = (goodsDetail.description || goodsDetail.shareTitle || '').trim();
+  console.log('description:', description);
+  if (description) {
+    titleParts.push(description);
+  }
+  
+  // 过滤空值后组合标题
+  const validParts = titleParts.filter(part => part && part.length > 0);
+  const result = validParts.join(' ');
+  
+  console.log('titleParts:', titleParts);
+  console.log('validParts:', validParts);
+  console.log('最终标题:', result);
+  console.log('===== formatShareTitle 结束 =====');
+  
+  if (validParts.length > 0) {
+    return result;
+  }
+  
+  // 如果没有匹配的数据，返回默认标题
+  return goodsDetail.name ? `优质鸡蛋 - ${goodsDetail.name}` : '优质鸡蛋货源';
+}
+
+// 获取适合分享的图片 - 优先使用正方形图片填满分享框
+function getShareImageUrl(goodsDetail) {
+  const imageUrls = goodsDetail.imageUrls || [];
+  
+  if (imageUrls.length > 0) {
+    // 返回第一张图片作为分享图片
+    return imageUrls[0];
+  }
+  
+  return '/images/你有好蛋.png';
+}
+
 // 媒体类型判断函数
 function isVideoUrl(url) {
   if (!url || typeof url !== 'string') {
@@ -202,7 +284,7 @@ Page({
   // 分享给朋友/群聊
   onShareAppMessage() {
     const goodsDetail = this.data.goodsDetail || {};
-    const title = goodsDetail.name ? `优质鸡蛋 - ${goodsDetail.name}` : '优质鸡蛋货源';
+    const title = formatShareTitle(goodsDetail);
     
     // 获取联系人、电话号码和地区信息
     const contactName = goodsDetail.product_contact || '';
@@ -235,14 +317,14 @@ Page({
     return {
       title: title,
       path: sharePath,
-      imageUrl: goodsDetail.imageUrls && goodsDetail.imageUrls.length > 0 ? goodsDetail.imageUrls[0] : '/images/你有好蛋.png'
+      imageUrl: getShareImageUrl(goodsDetail)
     }
   },
 
   // 分享到朋友圈
   onShareTimeline() {
     const goodsDetail = this.data.goodsDetail || {};
-    const title = goodsDetail.name ? `优质鸡蛋 - ${goodsDetail.name}` : '优质鸡蛋货源';
+    const title = formatShareTitle(goodsDetail);
     
     // 获取联系人、电话号码和地区信息
     const contactName = goodsDetail.product_contact || '';
@@ -272,7 +354,7 @@ Page({
     return {
       title: title,
       query: contactQuery,
-      imageUrl: goodsDetail.imageUrls && goodsDetail.imageUrls.length > 0 ? goodsDetail.imageUrls[0] : '/images/你有好蛋.png'
+      imageUrl: getShareImageUrl(goodsDetail)
     }
   },
 
@@ -415,6 +497,18 @@ Page({
       console.log('移除收藏状态变化事件监听');
     }
   },
+
+  onReady: function () {
+    wx.updateShareMenu({
+      withShareTicket: true,
+      success: () => {
+        console.log('分享菜单配置成功');
+      },
+      fail: (err) => {
+        console.log('分享菜单配置失败:', err);
+      }
+    });
+  },
   
   loadGoodsDetail: function (productId, preloadedData = null, contactFromShare = null) {
     // 首先显示预加载的数据，确保UI快速响应