feat(admin): 添加临时不可调度功能

当账号触发特定错误码和关键词匹配时，自动临时禁用调度：

后端：
- 新增 TempUnschedCache Redis 缓存层
- RateLimitService 支持规则匹配和状态管理
- 添加 GET/DELETE /accounts/:id/temp-unschedulable API
- 数据库迁移添加 temp_unschedulable_until/reason 字段

前端：
- 账号状态指示器显示临时不可调度状态
- 新增 TempUnschedStatusModal 详情弹窗
- 创建/编辑账号时支持配置规则和预设模板
- 完整的中英文国际化支持

frontend/src/api/admin/accounts.ts

@@ -12,7 +12,8 @@ import type {
   AccountUsageInfo,
   WindowStats,
   ClaudeModel,
-  AccountUsageStatsResponse
+  AccountUsageStatsResponse,
+  TempUnschedulableStatus
 } from '@/types'
 
 /**
@@ -170,6 +171,30 @@ export async function clearRateLimit(id: number): Promise<{ message: string }> {
   return data
 }
 
+/**
+ * Get temporary unschedulable status
+ * @param id - Account ID
+ * @returns Status with detail state if active
+ */
+export async function getTempUnschedulableStatus(id: number): Promise<TempUnschedulableStatus> {
+  const { data } = await apiClient.get<TempUnschedulableStatus>(
+    `/admin/accounts/${id}/temp-unschedulable`
+  )
+  return data
+}
+
+/**
+ * Reset temporary unschedulable status
+ * @param id - Account ID
+ * @returns Success confirmation
+ */
+export async function resetTempUnschedulable(id: number): Promise<{ message: string }> {
+  const { data } = await apiClient.delete<{ message: string }>(
+    `/admin/accounts/${id}/temp-unschedulable`
+  )
+  return data
+}
+
 /**
  * Generate OAuth authorization URL
  * @param endpoint - API endpoint path
@@ -332,6 +357,8 @@ export const accountsAPI = {
   getUsage,
   getTodayStats,
   clearRateLimit,
+  getTempUnschedulableStatus,
+  resetTempUnschedulable,
   setSchedulable,
   getAvailableModels,
   generateAuthUrl,