fix: randomize eligible card photos on manual regeneration

src/mixins/sharing-page.js

@@ -31,7 +31,10 @@ export default function sharingPage(kind) {
           if(this._sharingDisposed)return
           const profile=displayProfile(data)
           this.setPosterProgress(15,kind==='personal'?'正在选择适合的生活照':'正在准备专属邀请')
-          if(kind==='personal')profile.photo=await selectSharingPhoto(profile.photos)
+          if(kind==='personal'){
+            const previousCache=await readSharingCache(profile.id,kind)
+            profile.photo=await selectSharingPhoto(profile.photos,{random:force,previous:this.profile.photo||previousCache?.selectedPhoto,preferred:previousCache?.selectedPhoto})
+          }
           const cache=force?null:await readSharingCache(profile.id,kind,profile)
           if(this._sharingDisposed)return
           this.profile=profile;this.profileReady=true

src/pages/users/shareCard.wpy

@@ -14,7 +14,7 @@
     <view v-if="generating || (profileLoading && !poster)" class="asset-status card-status">{{profileLoading ? '正在读取个人资料' : posterStage}}</view>
     <view v-else-if="posterError || profileError" class="asset-error card-status"><text>{{posterError || profileError}}</text><button class="text-button" @tap="refreshPoster">重新生成</button></view>
     <view v-else-if="cacheNote" class="asset-status ready-status card-status">{{cacheNote}} · 点击查看大图</view>
-    <view class="card-tip">资料变更后，点击“更新海报”即可重新生成。</view>
+    <view class="card-tip">点击“更新海报”，随机换一张合适的生活照。</view>
     <view class="card-dock"><button class="secondary-button" :disabled="!poster || saving" @tap="savePoster">{{saving ? '正在保存…' : '保存海报'}}</button><button class="primary-button" open-type="share" :disabled="!profile.id">分享给好友</button></view>
     <canvas type="2d" id="fulianPoster" class="drawing-canvas"></canvas><canvas type="2d" id="fulianCover" class="drawing-canvas"></canvas>
   </view>

src/utils/sharing-cache.js

@@ -43,7 +43,7 @@ export async function writeSharingCache(profile,kind,assets) {
       await boundedCall((resolve,reject)=>wx.getFileSystemManager().copyFile({srcPath:assets[name],destPath:paths[name],success:resolve,fail:reject}), '图片缓存失败', 3000)
     }
     const index=readIndex(),previous=index[key]
-    const record={...paths,version:VERSION,fingerprint:sharingFingerprint(profile,kind),auth:digest(String(wx.getStorageSync('token')||'')),savedAt:Date.now()}
+    const record={...paths,selectedPhoto:profile.photo||'',version:VERSION,fingerprint:sharingFingerprint(profile,kind),auth:digest(String(wx.getStorageSync('token')||'')),savedAt:Date.now()}
     index[key]=record
     const expired=Object.keys(index).filter(k=>k!==key).sort((a,b)=>(index[b].savedAt||0)-(index[a].savedAt||0)).slice(3)
     const discarded=expired.map(k=>index[k]);expired.forEach(k=>delete index[k])

src/utils/sharing-photo.js

@@ -10,7 +10,7 @@ export function photoScore(width,height) {
   const resolution=Math.min(1,Math.min(width/686,height/470))
   return crop*0.8+resolution*0.2
 }
-export async function selectSharingPhoto(photos) {
+export async function selectSharingPhoto(photos,options={}) {
   const candidates=[...new Set((photos||[]).filter(url=>typeof url==='string'&&url.trim()))].slice(0,9)
   const checked=await Promise.all(candidates.map(async url=>{
     try{
@@ -18,5 +18,13 @@ export async function selectSharingPhoto(photos) {
       return {url,score:photoScore(info.width,info.height)}
     }catch(_){return {url,score:-1}}
   }))
-  return checked.filter(item=>item.score>=0).sort((a,b)=>b.score-a.score)[0]?.url||''
+  const eligible=checked.filter(item=>item.score>=0)
+  if(!eligible.length)return ''
+  if(options.random){
+    const alternatives=eligible.filter(item=>item.url!==options.previous)
+    const pool=alternatives.length?alternatives:eligible
+    return pool[Math.floor(Math.random()*pool.length)].url
+  }
+  if(options.preferred&&eligible.some(item=>item.url===options.preferred))return options.preferred
+  return eligible.sort((a,b)=>b.score-a.score)[0].url
 }

src/utils/sharing-runtime.js

@@ -26,6 +26,17 @@ export function sharingRequest(url, method = 'GET', data = {}) {
         const body = response.data
         if (response.statusCode === 200 && body && body.code === 0 && body.data != null) return resolve(body.data)
         if (response.statusCode === 401 || (body && (body.code === 2 || body.code === 3))) return reject(new Error('登录状态已失效，请重新登录后再试'))
+        if(url.endsWith('/sharing/code')){
+          if(response.statusCode!==200)return reject(new Error(`分享码接口异常（HTTP ${Number(response.statusCode)||0}），请联系客服`))
+          const messages={qr_token_refresh:'分享码凭证更新失败，请稍后重试',qr_upstream_unavailable:'分享码服务暂不可用，请稍后重试',qr_image_read:'分享码图片读取失败，请重试',qr_image_format:'分享码图片格式异常，请联系客服',qr_wechat_rejected:'微信未能生成分享码，请联系客服'}
+          const message=messages[body&&body.error_key]
+          const code=Number(body&&body.upstream_code)
+          if(message)return reject(new Error(message+(Number.isSafeInteger(code)&&code!==0?`（微信码 ${code}）`:'')))
+          // Old servers do not have error_key. Only expose known safe messages.
+          const known=['生成分享码失败，请稍后重试','生成分享码失败','分享码格式无效','分享类型无效']
+          if(body&&known.includes(body.message))return reject(new Error(body.message))
+          return reject(new Error('分享码获取失败，请联系客服核查接口版本'))
+        }
         reject(new Error('暂时无法获取分享信息，请稍后重试'))
       },
       fail() { reject(new Error('网络连接失败，请检查网络后重试')) }

tools/sharing/VALIDATION-20261102.md

@@ -75,3 +75,12 @@ Node v24.19.0 六组回归均通过：check-image-path、check、check-cache、c
 开发者工具启动过程：自动化 SDK 在 Node24 启动 bat 失败，改用官方 CLI；游客 AppID 不被当前工具接受，改用仓库已有 AppID，仍仅加载独立禁网探针。探针分包注册失败后改成普通页面入口完成验证。测试后关闭探针项目。未上传、未部署、未更新 main 验收包；改动保留当前 feature，包含此前邀请列表详情入口。
 
 2026-11-02 用户确认编译本轮修复进行验收。按既有授权合并本地 main 后编译，新制品和精确提交记录见 releases/20261102-poster-fix-main。未执行上传或部署。
+
+## 2026-11-03 手动更新随机换生活照
+
+分支 feature/card-photo-refresh。个人卡片点击“更新海报”或失败后的“重新生成”，重新读取本人生活照并筛选既有尺寸/比例条件，在合格候选中随机选择；多张时排除上一张，单张继续使用，无合格照片返回品牌默认背景。首次进入仍按适配度优选；将 selectedPhoto 写入本地缓存，正常重进保持上次随机照片，照片删除或不再合格时重新选择。邀请海报行为不变。
+
+Node v24.19.0：六组分享回归退出0。check-photo 增加随机排除当前、单张、无照片、优先缓存照片、重进不重新导出、照片删除后替换；额外执行生成失败后点击重试换图检查，退出0。git diff --check通过，后端没有本次改动，未上传发布。
+Node v16.20.2 在 .release-build/invitation-card-candidate 执行 tools/build/build.cjs，退出0，89模板编译完成。改动仍在功能分支，未更新 main 验收包。
+
+2026-11-03 用户确认后端修复生效但线上换图未变化。核实上一交付前端 main f82dab2 仍固定优选，随机换图代码尚在功能分支。本轮补齐前端交付，合并后从 main 编译；多张合格照片排除当前项，缓存保留新选择。

tools/sharing/check-code-errors.cjs

@@ -0,0 +1,12 @@
+const assert=require('assert'),{createHarness}=require('./harness.cjs')
+;(async()=>{
+ const h=createHarness(),{sharingRequest}=h.load('utils/sharing-runtime'),url='https://synthetic.invalid/user/sharing/code'
+ for(const [response,pattern] of [
+  [{statusCode:404,data:{}},/HTTP 404/],
+  [{statusCode:200,data:{code:1,error_key:'qr_wechat_rejected',upstream_code:41030,message:'secret'}},/微信码 41030/],
+  [{statusCode:200,data:{code:1,error_key:'qr_token_refresh'}},/凭证更新失败/],
+  [{statusCode:200,data:{code:1,message:'生成分享码失败，请稍后重试'}},/生成分享码失败/],
+  [{statusCode:200,data:{code:1,message:'SYNTHETIC_PRIVATE_SECRET'}},/核查接口版本/]
+ ]){h.flags.response=response;await assert.rejects(sharingRequest(url,'POST',{kind:'invite'}),e=>pattern.test(e.message)&&!e.message.includes('secret')&&!e.message.includes('PRIVATE'))}
+ console.log('PASS: QR HTTP/WeChat/credential/legacy failures distinguishable without leaking raw responses.')
+})().catch(e=>{console.error(e.stack);process.exitCode=1})

tools/sharing/check-photo.cjs

@@ -10,6 +10,18 @@ const assert=require('assert'),{createHarness}=require('./harness.cjs')
  assert.equal(await selectSharingPhoto(['portrait','bad','small','fit','panorama']),'fit')
  assert.equal(await selectSharingPhoto(['small','bad','panorama']),'')
  assert.equal(await selectSharingPhoto([]),'')
+ assert.equal(await selectSharingPhoto(['portrait','fit','small','bad'],{random:true,previous:'fit'}),'portrait')
+ assert.equal(await selectSharingPhoto(['fit','fit'],{random:true,previous:'fit'}),'fit')
+ assert.equal(await selectSharingPhoto(['bad','small'],{random:true}),'')
+ assert.equal(await selectSharingPhoto(['portrait','fit'],{preferred:'portrait'}),'portrait')
+ const refresh=createHarness();refresh.state.profile.photos=['first','second']
+ const refreshed=refresh.page('shareCard');refreshed.hook('onReady');await refreshed.startSharing()
+ const initial=refreshed.profile.photo;await refreshed.refreshPoster()
+ assert.notEqual(refreshed.profile.photo,initial);assert(refreshed.poster)
+ const chosen=refreshed.profile.photo,poster=refreshed.poster,exportsBefore=refresh.state.exportID
+ const revisit=refresh.page('shareCard');revisit.hook('onReady');await revisit.startSharing()
+ assert.equal(revisit.profile.photo,chosen);assert.equal(revisit.poster,poster);assert.equal(refresh.state.exportID,exportsBefore)
+ refresh.state.profile.photos=[initial];await revisit.loadSharingProfile();assert.equal(revisit.profile.photo,initial)
  const runtime=h.load('utils/sharing-runtime')
  assert.equal(runtime.displayProfile({id:42,photo:'avatar-only'}).photo,'')
  const empty=createHarness();empty.state.profile.photos=[]