feat: 实现设置账号并发数功能（支持 bulk-update 与 fallback 逐个更新）

frontend/src/views/Websites.vue

@@ -133,6 +133,15 @@
           >
             清理失效账号
           </el-button>
+          <el-button
+            size="small"
+            text
+            :disabled="!selectedWebsite"
+            @click="openConcurrencyDialog"
+            title="一键设置当前网站已导入账号的并发数"
+          >
+            设置账号并发
+          </el-button>
           <el-button size="small" text :disabled="websites.length === 0" @click="openBindingCreate(selectedWebsite || websites[0])">新增绑定</el-button>
         </div>
         <div class="binding-list" v-loading="bindingLoading">
@@ -841,6 +850,87 @@
         </div>
       </template>
     </el-dialog>
+
+    <!-- 设置账号并发数弹窗 -->
+    <el-dialog
+      v-model="concurrencyDialog"
+      title="一键设置账号并发数"
+      width="850px"
+      destroy-on-close
+    >
+      <div v-if="!concurrencyHasExecuted">
+        <el-alert
+          title="功能说明"
+          type="warning"
+          show-icon
+          :closable="false"
+          style="margin-bottom: 15px;"
+        >
+          <div style="font-size: 13px; line-height: 1.5;">
+            该操作将<strong>仅修改由 SmartUp 导入并绑定到当前网站的账号并发数</strong>，不会影响任何由目标站手工创建的其他账号。<br />
+            如果目标站接口支持批量更新（bulk-update），系统将一次性批量设置；否则将自动退回至逐个请求更新模式。
+          </div>
+        </el-alert>
+
+        <el-form label-width="120px" style="margin-top: 20px;">
+          <el-form-item label="目标并发数">
+            <el-input-number
+              v-model="targetConcurrency"
+              :min="1"
+              :max="1000"
+              :step="10"
+              style="width: 200px;"
+            />
+            <div style="font-size: 12px; color: var(--el-text-color-secondary); margin-top: 5px;">
+              请输入 1 到 1000 之间的并发值，推荐设置为 100。
+            </div>
+          </el-form-item>
+        </el-form>
+      </div>
+
+      <div v-else>
+        <div style="margin-bottom: 15px; font-weight: bold; color: var(--el-color-primary);">
+          {{ concurrencyMessage }}
+        </div>
+
+        <el-table :data="concurrencyResults" border stripe size="small" style="width: 100%; max-height: 400px; overflow-y: auto;">
+          <el-table-column prop="account_id" label="账号 ID" width="150" />
+          <el-table-column prop="account_name" label="账号名" min-width="180" show-overflow-tooltip />
+          <el-table-column prop="old_concurrency" label="当前并发" width="110" align="center">
+            <template #default="{ row }">
+              <span v-if="row.old_concurrency !== null">{{ row.old_concurrency }}</span>
+              <span v-else class="text-muted">-</span>
+            </template>
+          </el-table-column>
+          <el-table-column prop="target_concurrency" label="目标并发" width="110" align="center" />
+          <el-table-column prop="status" label="状态" width="100" align="center">
+            <template #default="{ row }">
+              <el-tag v-if="row.status === 'success'" type="success" size="small">成功</el-tag>
+              <el-tag v-else-if="row.status === 'skipped'" type="warning" size="small">跳过</el-tag>
+              <el-tag v-else-if="row.status === 'failed'" type="danger" size="small">失败</el-tag>
+              <el-tag v-else type="info" size="small">{{ row.status }}</el-tag>
+            </template>
+          </el-table-column>
+          <el-table-column prop="message" label="说明/原因" min-width="150" show-overflow-tooltip />
+        </el-table>
+      </div>
+
+      <template #footer>
+        <div class="dialog-footer">
+          <el-button @click="concurrencyDialog = false" :disabled="concurrencyExecuting">
+            {{ concurrencyHasExecuted ? '关闭' : '取消' }}
+          </el-button>
+          <el-button
+            v-if="!concurrencyHasExecuted"
+            type="primary"
+            :loading="concurrencyExecuting"
+            @click="submitSetConcurrency"
+          >
+            确认执行
+          </el-button>
+        </div>
+      </template>
+    </el-dialog>
   </div>
 </template>
 
@@ -866,6 +956,7 @@ import {
   type WebsiteSyncLog,
   type OrganizeGroupsItem,
   type CleanupInvalidAccountsItem,
+  type SetConcurrencyItem,
 } from '@/api'
 
 const websites = ref<(WebsiteData & { _testing?: boolean })[]>([])
@@ -1004,7 +1095,7 @@ const importAccountsForm = ref({
   account_name_prefix: 'SmartUp',
   default_platform: 'openai',
   platform_mode: 'auto',
-  concurrency: 10,
+  concurrency: 100,
   priority: 1,
   auto_priority_by_rate: true,
 })
@@ -1021,6 +1112,13 @@ const cleanupExecuting = ref(false)
 const cleanupHasExecuted = ref(false)
 const cleanupItems = ref<CleanupInvalidAccountsItem[]>([])
 
+const concurrencyDialog = ref(false)
+const concurrencyExecuting = ref(false)
+const concurrencyHasExecuted = ref(false)
+const targetConcurrency = ref(100)
+const concurrencyMessage = ref('')
+const concurrencyResults = ref<SetConcurrencyItem[]>([])
+
 const upstreamGroupOptions = computed(() => {
   const rows: Array<{ key: string; label: string; rate: string | number; source: BindingSourceGroup }> = []
   for (const upstream of upstreams.value) {
@@ -1727,6 +1825,47 @@ async function executeCleanup() {
   }
 }
 
+function openConcurrencyDialog() {
+  if (!selectedWebsite.value) return
+  targetConcurrency.value = 100
+  concurrencyHasExecuted.value = false
+  concurrencyResults.value = []
+  concurrencyMessage.value = ''
+  concurrencyDialog.value = true
+}
+
+async function submitSetConcurrency() {
+  if (!selectedWebsite.value) return
+  try {
+    await ElMessageBox.confirm(
+      `确认将当前网站中由 SmartUp 导入账号的并发数一键设置为 ${targetConcurrency.value}？`,
+      '确认修改并发数',
+      { type: 'warning' }
+    )
+  } catch {
+    return
+  }
+
+  concurrencyExecuting.value = true
+  try {
+    const res = await websitesApi.setConcurrency(selectedWebsite.value.id, {
+      concurrency: targetConcurrency.value
+    })
+    concurrencyMessage.value = res.data.message
+    concurrencyResults.value = res.data.items
+    concurrencyHasExecuted.value = true
+    if (res.data.success) {
+      ElMessage.success('设置完成')
+    } else {
+      ElMessage.warning(res.data.message || '部分账号设置并发失败')
+    }
+  } catch (e: any) {
+    ElMessage.error(e.response?.data?.detail || '设置并发失败')
+  } finally {
+    concurrencyExecuting.value = false
+  }
+}
+
 async function toggleBinding(row: GroupBindingData) {
   try {
     await websitesApi.updateBinding(row.id, { enabled: row.enabled })
@@ -1797,7 +1936,7 @@ async function openImportAccounts(site?: WebsiteData | null) {
     account_name_prefix: 'SmartUp',
     default_platform: 'openai',
     platform_mode: 'auto',
-    concurrency: 10,
+    concurrency: 100,
     priority: 1,
     auto_priority_by_rate: true,
   }