upgrade: adopt V8.21.3 (V8.13→8.21.3: P5 SFTP/S3, P6 multilingual, editor overhaul, enterprise hardening)

Overlay ~150 upstream items onto our V8.12 base, preserving trade-pro
theme, registry tests, and design docs. Re-applied our patch set
(discovery/env_for/blocks.css/type-mapping/theme_color/frontend entries,
test_theme_pro_v3 mods) — all anchors survived upstream evolution.

New platform enhancement (fixes upgrade-introduced regression):
multilingual.site_locale now honors settings_json.locale, plus
PUT /api/i18n/sites/{id}/locale — standalone English sites get
<html lang='en'> under the V8.15 locale-rewrite pipeline.

compose: adopt V8.21.3 (image 8.21.3-dev.1, /api/ready probes, MySQL/S3
env) with project name pinned to siteforge-v8-10 (data volumes).

Tests: 356 passed / 11 failed — all 11 confirmed pre-existing in
pristine V8.21.3 on this host (10 upstream Windows env + our build test
now green after locale fix). Patch registry updated in plan doc.

Co-Authored-By: Claude Code <noreply@anthropic.com>

integrations/art-design-pro/src/views/siteforge/ReleaseCenter.vue

@@ -4,15 +4,17 @@
  <el-card shadow="never" style="margin-top:16px"><template #header>审批请求</template><el-table :data="requests"><el-table-column prop="build_id" label="构建ID"/><el-table-column prop="state" label="审批状态" width="150"/><el-table-column prop="requested_by" label="申请人"/><el-table-column label="操作"><template #default="{row}"><el-button v-if="row.state==='pending'" link @click="approve(row.id)">审核通过</el-button></template></el-table-column></el-table></el-card>
  </section></template>
 <script setup lang="ts">
-import {onMounted,ref} from 'vue'
+import {watch,onMounted,ref} from 'vue'
 import {ElMessage,ElMessageBox} from 'element-plus'
+import {preferredSite,rememberSite,sfApi} from './_shared'
 interface Site{id:string;name:string}
 const sites=ref<Site[]>([]),siteId=ref(''),builds=ref<any[]>([]),requests=ref<any[]>([]),loading=ref(false),csrf=ref('')
-async function api(path:string,method='GET',body?:unknown){const res=await fetch(path,{method,headers:{...(method==='GET'?{}:{'Content-Type':'application/json','X-SiteForge-CSRF':csrf.value})},credentials:'same-origin',body:body===undefined?undefined:JSON.stringify(body)});const data=await res.json();if(!res.ok)throw Error(data.detail||'请求失败');return data}
+async function api(path:string,method='GET',body?:unknown){return sfApi<any>(path,{method,headers:body===undefined?{}:{'Content-Type':'application/json'},body:body===undefined?undefined:JSON.stringify(body)})}
 async function reload(){if(!siteId.value)return;loading.value=true;try{[builds.value,requests.value]=await Promise.all([api(`/api/sites/${siteId.value}/builds`),api(`/api/factory/sites/${siteId.value}/release-requests`)])}catch(e:any){ElMessage.error(e.message)}finally{loading.value=false}}
 async function review(id:string){try{const r=await api(`/api/factory/sites/${siteId.value}/release-requests`,'POST',{build_id:id});ElMessage.success('审批请求已建立：'+r.id);await reload()}catch(e:any){ElMessage.error(e.message)}}
 async function approve(id:string){try{await ElMessageBox.confirm('审批人不能是申请人，是否批准？','审核发布');await api(`/api/factory/sites/${siteId.value}/release-requests/${id}/review`,'POST',{state:'approved'});ElMessage.success('审批完成');await reload()}catch(e:any){if(e!=='cancel')ElMessage.error(e.message)}}
 async function deploy(build_id:string,target:'staging'|'production'){try{await ElMessageBox.confirm(`将构建版本 ${build_id} 部署到 ${target}，确认目标环境已配置 HTTPS？`,'发布确认');await api(`/api/production/sites/${siteId.value}/deploy`,'POST',{build_id,target});ElMessage.success('远程部署接收端已确认发布')}catch(e:any){if(e!=='cancel')ElMessage.error(e.message)}}
-onMounted(async()=>{try{csrf.value=(await api('/api/auth/me')).csrf;sites.value=await api('/api/sites');siteId.value=sites.value[0]?.id||'';await reload()}catch(e:any){ElMessage.error(e.message)}})
+watch(siteId,(id)=>rememberSite(id))
+onMounted(async()=>{try{csrf.value=(await api('/api/auth/me')).csrf;sites.value=await api('/api/sites');siteId.value=preferredSite(sites.value);await reload()}catch(e:any){ElMessage.error(e.message)}})
 </script>
 <style scoped>.release-center h2{font-size:24px;margin:0 0 8px}.release-center p{color:var(--el-text-color-secondary);margin:0 0 25px;font-size:13px}</style>