修复seller页面登录后表单内容丢失问题

pages/seller/index.js

@@ -1211,10 +1211,12 @@ Page({
         wx.switchTab({ url: '/pages/buyer/index' })
       } else {
         // 卖家登录成功后，重新显示创建货源弹窗
+        // 从本地存储加载保存的表单数据
+        const savedSupply = wx.getStorageSync('newSupplyDraft') || { name: '', price: '', minOrder: '', yolk: '', spec: '', imageUrls: [] };
         this.setData({
           showImagePreview: false,
           showModal: true,
-          newSupply: { name: '', price: '', minOrder: '', yolk: '', spec: '', imageUrls: [] }
+          newSupply: savedSupply
         });
         this.disablePageScroll();
       }
@@ -1401,6 +1403,8 @@ Page({
     
     if (!userId || !openid || !userInfo) {
       console.log('用户未登录，显示登录提示');
+      // 登录前保存当前表单数据到本地存储
+      wx.setStorageSync('newSupplyDraft', this.data.newSupply);
       // 用户未登录，显示未授权提示弹窗
       wx.showModal({
         title: '登录提示',