fix(accounts): 账号管理改为单行增量更新并避免全量刷新

- 将编辑与重新授权成功事件改为回传更新后的账号对象
- 在账号列表页按 id 就地补丁更新单行数据并保留运行时容量字段
- 单账号操作（刷新凭证/清错/清限流/临时不可调度重置）改为单行更新
- 后端增强 clear-rate-limit 接口，返回更新后的账号对象
- 同步前端 clearRateLimit API 类型定义

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

frontend/src/components/account/EditAccountModal.vue

@@ -1111,7 +1111,7 @@ interface Props {
 const props = defineProps<Props>()
 const emit = defineEmits<{
   close: []
-  updated: []
+  updated: [account: Account]
 }>()
 
 const { t } = useI18n()
@@ -1849,9 +1849,9 @@ const handleSubmit = async () => {
       updatePayload.extra = newExtra
     }
 
-    await adminAPI.accounts.update(props.account.id, updatePayload)
+    const updatedAccount = await adminAPI.accounts.update(props.account.id, updatePayload)
     appStore.showSuccess(t('admin.accounts.accountUpdated'))
-    emit('updated')
+    emit('updated', updatedAccount)
     handleClose()
   } catch (error: any) {
     // Handle 409 mixed_channel_warning - show confirmation dialog
@@ -1879,9 +1879,9 @@ const handleMixedChannelConfirm = async () => {
     pendingUpdatePayload.value.confirm_mixed_channel_risk = true
     submitting.value = true
     try {
-      await adminAPI.accounts.update(props.account.id, pendingUpdatePayload.value)
+      const updatedAccount = await adminAPI.accounts.update(props.account.id, pendingUpdatePayload.value)
       appStore.showSuccess(t('admin.accounts.accountUpdated'))
-      emit('updated')
+      emit('updated', updatedAccount)
       handleClose()
     } catch (error: any) {
       appStore.showError(error.response?.data?.message || error.response?.data?.detail || t('admin.accounts.failedToUpdate'))