fix(mp): F6 小程序体检 三态/lazy-load/分享兜底/安全区/断链图修复

- 401 自动续登重试：request.ts 1002+401→relogin(全局锁+30s冷却)→新token重试一次（既有实现，本次核验确认）
- 三态：app.wxss 新增 .error-state 共享样式；首页(全模块失败判定)/福利街/任务页(双路失败判定)加错误态+重试
- 图片：11 处列表/首屏下图加 lazy-load；首页 placeholder.png(不存在)→gift.png；生成缺失的 avatar.png 灰圆默认头像
- 分享兜底：share.ts 加 DEFAULT_SHARE_IMAGE/shareImage()；12 个 onShareAppMessage 全部补 imageUrl 兜底
- iOS 安全区：.page 底距 calc(120rpx+env)；详情 float-share/swipe-hint、签到 float-share、3 个 add-btn、问卷 footer-btns 补 env(safe-area-inset-bottom)

miniprogram/app.wxss

@@ -39,7 +39,8 @@ page {
 .page {
   min-height: 100vh;
   background: var(--bg-page);
-  padding-bottom: 120rpx;
+  /* F6/T12：iOS 安全区——底部统一留出 Home 指示条高度 */
+  padding-bottom: calc(120rpx + env(safe-area-inset-bottom));
 }
 .page-safe {
   padding: 0 var(--page-padding);
@@ -149,6 +150,23 @@ page {
   font-size: var(--text-sm);
 }
 
+/* ===== F6/T12：列表错误三态之「错误态」（空/加载态沿用上方 empty/loading） ===== */
+.error-state {
+  text-align: center;
+  padding: 100rpx var(--space-lg);
+  color: var(--text-secondary);
+  font-size: var(--text-base);
+}
+.error-state-retry {
+  display: inline-block;
+  margin-top: var(--space-md);
+  padding: 12rpx 48rpx;
+  border-radius: 32rpx;
+  border: 1rpx solid var(--primary);
+  color: var(--primary);
+  font-size: var(--text-sm);
+}
+
 /* ===== 鲸彩好运 V8 Design Tokens（Sprint1 新增，不影响上方旧变量） ===== */
 page {
   /* 色彩 */

miniprogram/pages/address/index.wxss

@@ -5,4 +5,4 @@
 .addr-actions { display: flex; gap: var(--space-lg); border-top: 1rpx solid var(--divider); padding-top: var(--space-sm); }
 .action { font-size: var(--text-base); color: var(--info); }
 .action.del { color: var(--error); }
-.add-btn { position: fixed; bottom: 0; left: 0; right: 0; border-radius: 0; }
+.add-btn { position: fixed; bottom: 0; left: 0; right: 0; border-radius: 0; padding-bottom: env(safe-area-inset-bottom); }

miniprogram/pages/daily-lottery/detail/index.ts

@@ -1,5 +1,5 @@
 import { lotteryApi } from '../../../utils/lottery-api'
-import { prepareShareToken, buildSharePath } from '../../../utils/share'
+import { prepareShareToken, buildSharePath, shareImage } from '../../../utils/share'
 import { reportShareVisit } from '../../../utils/visit'
 import { formatDrawTime } from '../../../utils/format'
 import { joinErrorMessage, JOIN_CODES } from '../../../utils/error-map'
@@ -253,6 +253,7 @@ Page({
     return {
       title: lottery?.title || '快来参与每日抽奖！',
       path: buildSharePath(basePath, this.data.shareToken),
+      imageUrl: shareImage(lottery?.cover_image),
     }
   },
 })

miniprogram/pages/drawbox/index.ts

@@ -1,7 +1,7 @@
 import { drawboxApi } from '../../utils/drawbox-api'
 import type { DrawboxDrawResult, DrawboxSlot } from '../../utils/drawbox-api'
 import { abAssign } from '../../utils/ab-api'
-import { prepareShareToken, buildSharePath } from '../../utils/share'
+import { prepareShareToken, buildSharePath, shareImage } from '../../utils/share'
 import { reportShareVisit } from '../../utils/visit'
 
 const app = getApp<any>()
@@ -480,6 +480,7 @@ Page({
     return {
       title,
       path: this.buildInvitePath(),
+      imageUrl: shareImage(),
     }
   },
 

miniprogram/pages/index/index.ts

@@ -58,6 +58,8 @@ Page({
   data: {
     user: null as MpUser | null,
     loading: true,
+    /** F6：关键模块全部失败时的错误态信息（空串=正常） */
+    loadError: '',
     // 开屏广告：每次冷启动展示一次（用 storage 标记控制）
     splashShow: false,
     // V11.0 §11.1 微信原生开屏广告位 ID（从 /mp/config/ad 加载，空串=未开通走自建兜底）
@@ -279,11 +281,11 @@ Page({
    * 其余模块渲染顺序与原版一致（仍通过 Promise.allSettled 并行加载）。
    */
   async loadHomeData() {
-    this.setData({ loading: true })
+    this.setData({ loading: true, loadError: '' })
 
     try {
       // 关键路径：并行加载配置、官方推荐、手气广场等主模块（不含 drawbox）
-      await Promise.allSettled([
+      const results = await Promise.allSettled([
         this.loadDailyConfig(),
         this.loadFeaturedLotteries(),
         this.loadDailyLotteries(),
@@ -295,10 +297,12 @@ Page({
         this.loadCheckinCardConfig(),
       ])
 
-      this.setData({ loading: false })
+      // F6：关键模块全部失败（多为断网）→ 错误态 banner，可点击重试；
+      // 部分失败维持各模块既有降级（空态/隐藏），不打扰。
+      const allFailed = results.every((r) => r.status === 'rejected')
+      this.setData({ loading: false, loadError: allFailed ? '网络异常，首页加载失败' : '' })
     } catch (e: any) {
-      this.setData({ loading: false })
-      wx.showToast({ title: e?.message || '加载失败', icon: 'none' })
+      this.setData({ loading: false, loadError: e?.message || '加载失败' })
     }
 
     // 命运盒子两路请求独立发起，互不阻塞，也不再拖慢首屏 loading 结束。

miniprogram/pages/index/index.wxml

@@ -1,4 +1,10 @@
 <view class="page">
+  <!-- F6：错误态 banner（关键模块全部失败时出现，点击重试） -->
+  <view wx:if="{{loadError}}" class="error-state">
+    <view>{{loadError}}</view>
+    <view class="error-state-retry" bindtap="loadHomeData">重试</view>
+  </view>
+
   <!-- 顶部区域：渐变背景 -->
   <view class="header">
     <!-- 导航栏占位（状态栏 + 胶囊按钮区域） -->
@@ -34,7 +40,7 @@
       </swiper-item>
       <swiper-item wx:for="{{featuredLotteries}}" wx:key="id">
         <view class="featured-card" bindtap="onFeaturedClick" data-id="{{item.id}}">
-          <image class="featured-cover" src="{{item.cover_image || '/images/placeholder.png'}}" mode="aspectFit" />
+          <image class="featured-cover" src="{{item.cover_image || '/images/gift.png'}}" mode="aspectFit" lazy-load />
           <view class="featured-info">
             <text class="featured-title">{{item.title}}</text>
             <view class="featured-btn btn btn-primary">参与抽奖</view>
@@ -76,7 +82,7 @@
     <!-- 区域2 今日大奖 -->
     <view class="db-today page-safe" wx:if="{{drawboxTodayPrize}}" bindtap="onDrawboxTodayPrize">
       <view class="db-today-card">
-        <image class="db-today-img" src="{{drawboxTodayPrize.image || '/images/placeholder.png'}}" mode="aspectFill" />
+        <image class="db-today-img" src="{{drawboxTodayPrize.image || '/images/gift.png'}}" mode="aspectFill" lazy-load />
         <view class="db-today-info">
           <text class="db-today-label">今日大奖</text>
           <text class="db-today-name">{{drawboxTodayPrize.name}}</text>
@@ -125,7 +131,7 @@
       <scroll-view class="db-hot-scroll" scroll-x enhanced show-scrollbar="{{false}}">
         <view class="db-hot-row">
           <view wx:for="{{drawboxHotPrizes}}" wx:key="id" class="db-hot-card" data-id="{{item.id}}" bindtap="onDrawboxHotPrize">
-            <image class="db-hot-img" src="{{item.image || '/images/placeholder.png'}}" mode="aspectFill" />
+            <image class="db-hot-img" src="{{item.image || '/images/gift.png'}}" mode="aspectFill" lazy-load />
             <text class="db-hot-name">{{item.name}}</text>
             <text class="db-hot-claimed">已领 {{item.claimed_count}} 份</text>
           </view>
@@ -172,7 +178,7 @@
       <text class="today-subtitle">{{todayPrizeDesc}}</text>
     </view>
     <view class="today-card" bindtap="onTodayPrizeTap">
-      <image class="today-cover" src="{{todayPrize.cover_image || todayPrize.lottery.cover_image || '/images/placeholder.png'}}" mode="aspectFill" />
+      <image class="today-cover" src="{{todayPrize.cover_image || todayPrize.lottery.cover_image || '/images/gift.png'}}" mode="aspectFill" lazy-load />
       <view class="today-info">
         <text class="today-lottery-title">{{todayPrize.custom_title || todayPrize.lottery.title}}</text>
         <text class="today-countdown {{todayStatusEnded ? 'today-ended' : ''}}" wx:if="{{todayStatusText}}">{{todayStatusText}}</text>
@@ -203,7 +209,7 @@
     <view class="plaza-grid">
       <view wx:for="{{dailyLotteries}}" wx:key="id"
             class="plaza-card" bindtap="onPlazaCardClick" data-id="{{item.id}}">
-        <image class="plaza-cover" src="{{item.cover_image || '/images/placeholder.png'}}" mode="aspectFill" />
+        <image class="plaza-cover" src="{{item.cover_image || '/images/gift.png'}}" mode="aspectFill" lazy-load />
         <view class="plaza-info">
           <text class="plaza-title">{{item.title}}</text>
           <view class="plaza-meta">

miniprogram/pages/invite/index/index.ts

@@ -1,5 +1,6 @@
 import { guaranteedCouponApi } from '@/utils/guaranteed-coupon-api'
 import { fetchUserInfo } from '@/utils/auth'
+import { shareImage } from '@/utils/share'
 
 // 邀请好友页（V11.0 §5.10/§12.2）：邀请新用户得必中券 + 我的必中券 + 历史记录。
 const STATUS_TEXT: Record<string, string> = {
@@ -85,6 +86,7 @@ Page({
     return {
       title: '我在鲸彩好运抽大奖，邀请你一起抽！双方都得必中券',
       path: code ? `/pages/index/index?invite_code=${encodeURIComponent(code)}` : '/pages/index/index',
+      imageUrl: shareImage(),
     }
   },
 

miniprogram/pages/lottery/create/index.ts

@@ -5,6 +5,7 @@ import { questionnaireApi, type Questionnaire } from '../../../utils/questionnai
 import { adApi } from '../../../utils/ad-api'
 import { chooseAndUploadImage } from '../../../utils/upload'
 import type { AppOption } from '../../../utils/auth'
+import { shareImage } from '../../../utils/share'
 
 interface PrizeForm {
   name: string
@@ -952,9 +953,10 @@ Page({
       return {
         title: this.data.publishedTitle || '快来参与抽奖！',
         path: `/pages/lottery/detail/index?id=${this.data.publishedId}`,
+        imageUrl: shareImage(),
       }
     }
-    return { title: '鲸彩好运 · 免费发起抽奖', path: '/pages/lottery/create/index' }
+    return { title: '鲸彩好运 · 免费发起抽奖', path: '/pages/lottery/create/index', imageUrl: shareImage() }
   },
 
   /** 生成朋友圈海报（canvas 绘制 → 临时文件 → 保存相册） */

miniprogram/pages/lottery/detail/index.ts

@@ -1,7 +1,7 @@
 import { lotteryApi, type SettlementPreview } from '../../../utils/lottery-api'
 import { lotteryQuestionnaireApi } from '../../../utils/questionnaire-api'
 import { assistApi, type AssistStatus } from '../../../utils/assist-api'
-import { prepareShareToken, buildSharePath } from '../../../utils/share'
+import { prepareShareToken, buildSharePath, shareImage } from '../../../utils/share'
 import { promoSlotApi } from '../../../utils/promo-slot-api'
 import { adApi, AD_SCENE, type AdItem } from '../../../utils/ad-api'
 import { formatTime } from '../../../utils/format'
@@ -1003,6 +1003,7 @@ Page({
     return {
       title: l?.title || '快来参与抽奖！',
       path: buildSharePath(basePath, this.data.shareToken),
+      imageUrl: shareImage(l?.cover_image),
     }
   },
 

miniprogram/pages/lottery/detail/index.wxml

@@ -265,7 +265,7 @@
       <text class="participant-text" bindtap="goParticipants" hover-class="participant-text-hover">已有 {{lottery.current_count}} 人参与 ></text>
       <view class="avatar-row">
         <block wx:for="{{participants}}" wx:key="user_id">
-          <image class="small-avatar" src="{{item.avatar||'/images/avatar.png'}}" wx:if="{{index<6}}" catchtap="noopAvatar"/>
+          <image class="small-avatar" src="{{item.avatar||'/images/avatar.png'}}" wx:if="{{index<6}}" catchtap="noopAvatar" lazy-load/>
         </block>
         <view class="avatar-more" wx:if="{{lottery.current_count>6}}">+{{lottery.current_count-6}}</view>
       </view>
@@ -276,7 +276,7 @@
       <view class="section-title">中奖名单</view>
       <block wx:for="{{winners}}" wx:key="id">
         <view class="winner-item">
-          <image class="avatar" src="{{item.mp_user.avatar||'/images/avatar.png'}}"/>
+          <image class="avatar" src="{{item.mp_user.avatar||'/images/avatar.png'}}" lazy-load/>
           <text class="nickname">{{item.mp_user.nickname||'匿名用户'}}</text>
           <text class="prize">{{item.prize_name}}</text>
         </view>
@@ -340,7 +340,7 @@
 
   <!-- 上滑切换遮罩（转场动画） -->
   <view class="switch-mask {{switching}}" wx:if="{{switching}}">
-    <image class="switch-cover" src="{{switchNext.cover_image||'/images/gift.png'}}" mode="aspectFill"/>
+    <image class="switch-cover" src="{{switchNext.cover_image||'/images/gift.png'}}" mode="aspectFill" lazy-load/>
     <view class="switch-info">
       <text class="switch-label">下一个抽奖</text>
       <text class="switch-title">{{switchNext.title}}</text>

miniprogram/pages/lottery/detail/index.wxss

@@ -115,7 +115,7 @@ page {
 .winner-item .prize { font-size: var(--text-sm); color: var(--primary); }
 
 /* Float share */
-.float-share { position: fixed; right: var(--page-padding); bottom: 180rpx; background: var(--bg-card); border: 1rpx solid var(--primary); color: var(--primary); padding: var(--space-sm) var(--space-md); border-radius: 40rpx; font-size: var(--text-sm); display: flex; align-items: center; gap: var(--space-xs); z-index: 100; }
+.float-share { position: fixed; right: var(--page-padding); bottom: calc(180rpx + env(safe-area-inset-bottom)); background: var(--bg-card); border: 1rpx solid var(--primary); color: var(--primary); padding: var(--space-sm) var(--space-md); border-radius: 40rpx; font-size: var(--text-sm); display: flex; align-items: center; gap: var(--space-xs); z-index: 100; }
 /* open-type="share" 的 button 需清除默认样式，保持与原 view 一致的胶囊外观 */
 button.float-share { line-height: 1.4; margin: 0; font-weight: normal; }
 button.float-share::after { border: none; }
@@ -131,7 +131,7 @@ button.share-guide-share::after { border: none; }
 .share-guide-close { font-size: var(--text-sm); color: var(--text-secondary); padding: var(--space-xs) var(--space-md); }
 
 /* Swipe hint（上滑切换提示） */
-.swipe-hint { position: fixed; bottom: 0; left: 0; right: 0; background: var(--bg-card); padding: var(--space-sm) var(--page-padding); display: flex; flex-direction: column; align-items: center; gap: 4rpx; font-size: var(--text-base); color: var(--text-secondary); border-top: 1rpx solid var(--divider); z-index: 100; }
+.swipe-hint { position: fixed; bottom: 0; left: 0; right: 0; background: var(--bg-card); padding: var(--space-sm) var(--page-padding) calc(var(--space-sm) + env(safe-area-inset-bottom)); display: flex; flex-direction: column; align-items: center; gap: 4rpx; font-size: var(--text-base); color: var(--text-secondary); border-top: 1rpx solid var(--divider); z-index: 100; }
 .swipe-hint-arrow { font-size: var(--text-lg); color: var(--primary); animation: swipe-bounce 1.2s ease-in-out infinite; }
 @keyframes swipe-bounce {
   0%, 100% { transform: translateY(0); opacity: 0.6; }

miniprogram/pages/lottery/group/index.ts

@@ -1,5 +1,6 @@
 import { lotteryApi } from '../../../utils/lottery-api'
 import { buildRegionExtra } from '../../../utils/location'
+import { shareImage } from '../../../utils/share'
 
 Page({
   data: {
@@ -116,6 +117,7 @@ Page({
     return {
       title: `就差你了！一起组队抽「${(this.data.lottery && this.data.lottery.title) || '大奖'}」`,
       path: `/pages/lottery/group/index?id=${this.data.id}&code=${this.data.shareCode}`,
+      imageUrl: shareImage(),
     }
   },
 })

miniprogram/pages/lucky-lottery/index/index.ts

@@ -1,7 +1,7 @@
 import { luckyLotteryApi } from '../../../utils/lucky-lottery-api'
 import type { LuckyLottery, DrawResult, LuckySettlementPreview } from '../../../utils/lucky-lottery-api'
 import { guaranteedCouponApi } from '@/utils/guaranteed-coupon-api'
-import { prepareShareToken, buildSharePath } from '../../../utils/share'
+import { prepareShareToken, buildSharePath, shareImage } from '../../../utils/share'
 import { reportShareVisit } from '../../../utils/visit'
 import { joinErrorMessage, JOIN_CODES } from '../../../utils/error-map'
 
@@ -245,6 +245,7 @@ Page({
     return {
       title: lottery?.title || '幸运大转盘',
       path: buildSharePath('/pages/lucky-lottery/index/index', shareToken),
+      imageUrl: shareImage(lottery?.cover_image),
     }
   },
 

miniprogram/pages/organizer-profile/list/index.wxss

@@ -9,4 +9,4 @@
 .profile-actions { display: flex; gap: var(--space-lg); border-top: 1rpx solid var(--divider); padding-top: var(--space-sm); }
 .action { font-size: var(--text-base); color: var(--info); }
 .action.del { color: var(--error); }
-.add-btn { position: fixed; bottom: 0; left: 0; right: 0; border-radius: 0; }
+.add-btn { position: fixed; bottom: 0; left: 0; right: 0; border-radius: 0; padding-bottom: env(safe-area-inset-bottom); }

miniprogram/pages/question/bank/index.wxss

@@ -8,4 +8,4 @@
 .question-actions { display: flex; gap: var(--space-lg); border-top: 1rpx solid var(--divider); padding-top: var(--space-sm); margin-top: var(--space-sm); }
 .action { font-size: var(--text-base); color: var(--info); }
 .action.del { color: var(--error); }
-.add-btn { position: fixed; bottom: 0; left: 0; right: 0; border-radius: 0; }
+.add-btn { position: fixed; bottom: 0; left: 0; right: 0; border-radius: 0; padding-bottom: env(safe-area-inset-bottom); }

miniprogram/pages/questionnaire/list/index.wxss

@@ -5,6 +5,6 @@
 .qn-actions { display: flex; gap: var(--space-lg); border-top: 1rpx solid var(--divider); padding-top: var(--space-sm); margin-top: var(--space-sm); }
 .action { font-size: var(--text-base); color: var(--info); }
 .action.del { color: var(--error); }
-.footer-btns { position: fixed; bottom: 0; left: 0; right: 0; display: flex; }
+.footer-btns { position: fixed; bottom: 0; left: 0; right: 0; display: flex; padding-bottom: env(safe-area-inset-bottom); }
 .bank-btn { flex: 1; border-radius: 0; }
 .add-btn { flex: 2; border-radius: 0; }

miniprogram/pages/share/poster/index.ts

@@ -1,4 +1,5 @@
 import { drawboxApi, type DrawboxPosterInfo } from '../../../utils/drawbox-api'
+import { shareImage } from '../../../utils/share'
 
 const POSTER_W = 750
 const POSTER_H = 1334
@@ -375,6 +376,7 @@ Page({
     return {
       title,
       path: '/pages/drawbox/index',
+      imageUrl: shareImage(),
     }
   },
 })

miniprogram/pages/signin-lottery/detail/index.ts

@@ -1,5 +1,5 @@
 import { signinLotteryApi, SigninLottery, MySigninStatus, SigninLotteryPrize } from '../../../utils/signin-lottery-api'
-import { prepareShareToken, buildSharePath } from '../../../utils/share'
+import { prepareShareToken, buildSharePath, shareImage } from '../../../utils/share'
 import { reportShareVisit } from '../../../utils/visit'
 import { formatDrawTime } from '../../../utils/format'
 import { joinErrorMessage, JOIN_CODES } from '../../../utils/error-map'
@@ -248,6 +248,7 @@ Page({
     return {
       title: l?.title || '签到抽奖，签到 N 天即可参与！',
       path: buildSharePath(basePath, this.data.shareToken),
+      imageUrl: shareImage(l?.cover_image),
     }
   },
 })

miniprogram/pages/signin-lottery/detail/index.wxss

@@ -60,7 +60,7 @@
 .rich-content { font-size: var(--text-base, 28rpx); color: var(--text, #333); line-height: 1.6; word-break: break-word; }
 
 /* Float share */
-.float-share { position: fixed; right: var(--page-padding); bottom: 60rpx; background: var(--bg-card); border: 1rpx solid #ff5e8a; color: #ff5e8a; padding: var(--space-sm) var(--space-md); border-radius: 40rpx; font-size: var(--text-sm); display: flex; align-items: center; gap: var(--space-xs); z-index: 100; box-shadow: 0 4rpx 16rpx rgba(255, 94, 138, 0.2); }
+.float-share { position: fixed; right: var(--page-padding); bottom: calc(60rpx + env(safe-area-inset-bottom)); background: var(--bg-card); border: 1rpx solid #ff5e8a; color: #ff5e8a; padding: var(--space-sm) var(--space-md); border-radius: 40rpx; font-size: var(--text-sm); display: flex; align-items: center; gap: var(--space-xs); z-index: 100; box-shadow: 0 4rpx 16rpx rgba(255, 94, 138, 0.2); }
 
 /* Empty state overrides */
 .empty-state .empty-icon { font-size: 100rpx; opacity: 0.6; }

miniprogram/pages/tasks/index/index.ts

@@ -18,6 +18,7 @@ import type { BusinessError } from '../../../utils/request'
 import { api } from '../../../utils/request'
 import { lotteryApi } from '../../../utils/lottery-api'
 import { syncTabBarSelected, TAB_INDEX } from '../../../utils/tabbar'
+import { shareImage } from '../../../utils/share'
 
 /** 视频激励广告位 ID 兜底占位常量；实际以后端 /mp/config/ad 下发的 rewarded_video_ad_unit_id 为准 */
 const REWARDED_VIDEO_AD_UNIT_ID = 'adunit-task-video-placeholder'
@@ -62,6 +63,8 @@ Page({
   data: {
     tasks: [] as DisplayTask[],
     loading: true,
+    /** F6：任务/汇总双路失败时的错误态信息（空串=正常） */
+    loadError: '',
     totalChanceAvailable: 0, // 今日剩余可得抽奖次数（来自 summary 接口）
     /** 逛福利 15 秒停留倒计时（显示给用户，<=0 时不再显示） */
     welfareDwellSeconds: 0,
@@ -115,6 +118,11 @@ Page({
     this.loadTasks(false).finally(() => wx.stopPullDownRefresh())
   },
 
+  /** F6：错误态重试 */
+  retryLoad() {
+    this.loadTasks(false)
+  },
+
   onUnload() {
     this.clearWelfareTimer()
     // 不销毁视频广告实例：跨页复用可避免重复创建的开销
@@ -125,7 +133,7 @@ Page({
    * silent=true 时不重置 loading 标记，避免抖动。
    */
   async loadTasks(silent: boolean = false) {
-    if (!silent) this.setData({ loading: true })
+    if (!silent) this.setData({ loading: true, loadError: '' })
     try {
       // 并行拉取任务与汇总；任一失败不影响另一接口
       const [tasksRes, summaryRes] = await Promise.allSettled([
@@ -136,14 +144,17 @@ Page({
       const summary = summaryRes.status === 'fulfilled' ? summaryRes.value : null
 
       const display: DisplayTask[] = tasks.map((t) => this.toDisplay(t))
+      // F6：任务与汇总两路同时失败（多为断网）→ 错误态，可重试
+      const bothFailed = tasksRes.status === 'rejected' && summaryRes.status === 'rejected'
       this.setData({
         tasks: display,
         totalChanceAvailable: (summary && summary.task_chance_available) || 0,
         loading: false,
+        loadError: bothFailed ? '任务加载失败，请检查网络' : '',
       })
     } catch (e) {
       console.error('load tasks failed', e)
-      this.setData({ loading: false })
+      this.setData({ loading: false, loadError: '任务加载失败，请检查网络' })
     }
   },
 
@@ -391,6 +402,7 @@ Page({
     return {
       title: '好运邀你一起抽',
       path: '/pages/index/index',
+      imageUrl: shareImage(),
     }
   },
 })

miniprogram/pages/tasks/index/index.wxml

@@ -1,6 +1,12 @@
 <!-- 任务中心：鲸彩好运 V8 Sprint3 -->
 <view class="tasks-page">
 
+  <!-- F6：错误态（双路加载失败，可重试） -->
+  <view wx:if="{{loadError}}" class="error-state">
+    <view>{{loadError}}</view>
+    <view class="error-state-retry" bindtap="retryLoad">重试</view>
+  </view>
+
   <!-- 顶部信息卡 -->
   <view class="hero page-safe">
     <view class="hero-row">
@@ -23,7 +29,7 @@
     </view>
     <view class="assist-list">
       <view wx:for="{{assistLotteries}}" wx:key="id" class="assist-card" data-id="{{item.id}}" bindtap="goAssist">
-        <image wx:if="{{item.cover_image}}" class="assist-cover" src="{{item.cover_image}}" mode="aspectFill" />
+        <image wx:if="{{item.cover_image}}" class="assist-cover" src="{{item.cover_image}}" mode="aspectFill" lazy-load />
         <view wx:else class="assist-cover assist-cover-fallback">🎁</view>
         <view class="assist-body">
           <text class="assist-name">{{item.title}}</text>

miniprogram/pages/team/index.ts

@@ -1,5 +1,6 @@
 import { drawboxApi, type DrawboxTeamInfo, type DrawboxTeamMember } from '../../utils/drawbox-api'
 import { fetchUserInfo, type MpUser } from '../../utils/auth'
+import { shareImage } from '../../utils/share'
 
 interface PageData {
   loading: boolean
@@ -92,6 +93,6 @@ Page({
     const title = `${nickname}邀请你加入${level}，好运一起抽！`
     // path 直接带 invite_code（小程序码 scene 解码后是 token，走 visit 链路识别邀请人）。
     const path = code ? `/pages/drawbox/index?invite_code=${encodeURIComponent(code)}` : '/pages/drawbox/index'
-    return { title, path }
+    return { title, path, imageUrl: shareImage() }
   },
 })

miniprogram/pages/user/home/index.ts

@@ -1,7 +1,7 @@
 import { userApi } from '../../../utils/user-api'
 import { dynamicApi } from '../../../utils/dynamic-api'
 import { lotteryApi } from '../../../utils/lottery-api'
-import { prepareShareToken, buildSharePath } from '../../../utils/share'
+import { prepareShareToken, buildSharePath, shareImage } from '../../../utils/share'
 import { reportShareVisit } from '../../../utils/visit'
 import { formatTime } from '@/utils/format'
 import type { AppOption } from '../../../utils/auth'
@@ -281,7 +281,7 @@ Page({
     return {
       title: p ? `${p.nickname || '用户'}的主页` : '来看看 TA 的主页',
       path: buildSharePath(base, this.data.shareToken),
-      imageUrl: (p && p.avatar) || '',
+      imageUrl: shareImage(p && p.avatar),
     }
   },
 })

miniprogram/pages/user/me/index.wxml

@@ -53,7 +53,7 @@
 
   <!-- 奖品卡片（我即将参与的抽奖） -->
   <view class="prize-card" bindtap="goPrizeCard">
-    <image class="prize-cover" src="{{prizeCard.cover}}" mode="aspectFill"/>
+    <image class="prize-cover" src="{{prizeCard.cover || '/images/gift.png'}}" mode="aspectFill" lazy-load/>
     <view class="prize-info">
       <view class="prize-title">奖品：{{prizeCard.title}}</view>
       <view class="prize-list">{{prizeCard.prizesText}}</view>

miniprogram/pages/welfare/index.ts

@@ -21,6 +21,8 @@ Page({
     total: 0,
     loading: false,
     noMore: false,
+    /** F6：首屏加载错误信息（空串=正常；有值且列表空时展示错误态） */
+    loadError: '',
     /** 商城购买渠道开关（后台控制，默认关闭）；关闭时隐藏「全部商品」入口 */
     purchaseEnabled: false,
 
@@ -73,7 +75,7 @@ Page({
 
   async loadWelfare() {
     if (this.data.loading) return
-    this.setData({ loading: true })
+    this.setData({ loading: true, loadError: '' })
     try {
       const res = await mallApi.getProducts(this.data.page, 20)
       const list = (res.list || []).filter((p) => p.points_enabled && p.points_cost > 0)
@@ -85,8 +87,21 @@ Page({
         loading: false,
       })
     } catch (e: any) {
-      this.setData({ loading: false })
-      wx.showToast({ title: e.message || '加载失败', icon: 'none' })
+      this.setData({ loading: false, loadError: e.message || '加载失败' })
+    }
+  },
+
+  /** F6：错误态重试 */
+  retryLoad() {
+    this.setData({ page: 1, noMore: false })
+    this.loadWelfare()
+  },
+
+  /** F6：图片加载失败 → 标记后走占位视图 */
+  onImgError(e: WechatMiniprogram.TouchEvent) {
+    const idx = Number(e.currentTarget.dataset.index)
+    if (!isNaN(idx) && this.data.welfareItems[idx]) {
+      this.setData({ [`welfareItems[${idx}]._imgErr`]: true })
     }
   },
 

miniprogram/pages/welfare/index.wxml

@@ -11,17 +11,23 @@
     </view>
   </view>
 
-  <view wx:if="{{welfareItems.length === 0 && !loading}}" class="empty-state">
+  <view wx:if="{{welfareItems.length === 0 && !loading && !loadError}}" class="empty-state">
     暂无可兑换的福利
   </view>
 
+  <!-- F6：错误态（首屏加载失败，可重试） -->
+  <view wx:if="{{loadError && welfareItems.length === 0}}" class="error-state">
+    <view>{{loadError}}</view>
+    <view class="error-state-retry" bindtap="retryLoad">重试</view>
+  </view>
+
   <view class="welfare-grid">
     <view
       wx:for="{{welfareItems}}" wx:key="id"
       class="welfare-card card card-shadow"
       bindtap="goDetail" data-id="{{item.id}}"
     >
-      <image wx:if="{{item.image}}" class="welfare-img" src="{{item.image}}" mode="aspectFill" />
+      <image wx:if="{{item.image && !item._imgErr}}" class="welfare-img" src="{{item.image}}" mode="aspectFill" lazy-load binderror="onImgError" data-index="{{index}}" />
       <view wx:else class="welfare-img-placeholder">🎁</view>
       <view class="welfare-info">
         <text class="welfare-name">{{item.name}}</text>

miniprogram/utils/share.ts

@@ -51,3 +51,20 @@ export function buildSharePath(basePath: string, token: string): string {
   const sep = basePath.includes('?') ? '&' : '?'
   return `${basePath}${sep}st=${encodeURIComponent(token)}`
 }
+
+/**
+ * 分享卡片兜底（F6/T12）：统一默认分享图与标题。
+ * 各页 onShareAppMessage 用 shareImage(url) 包一层，URL 为空时回退默认图，
+ * 避免微信侧展示空白缩略图。
+ */
+
+/** 默认分享卡片图（本地资源） */
+export const DEFAULT_SHARE_IMAGE = '/images/gift.png'
+
+/** 默认分享标题（页面未给标题时的品牌兜底） */
+export const DEFAULT_SHARE_TITLE = '鲸彩好运 · 免费抽奖天天有'
+
+/** 分享图兜底：传入有效 URL 用 URL，否则用默认图 */
+export function shareImage(url?: string | null): string {
+  return url && url.trim() ? url : DEFAULT_SHARE_IMAGE
+}