前端权限管理：实现接口级权限管理UI和监控仪表板

新增功能：
- 新增 ApiPermissions.vue 主页面，支持模块级/接口级权限切换
- 新增 ProjectPermissionsModule.vue 组件，展示模块级权限矩阵
- 新增 ApiEndpointPermissions.vue 组件，展示接口级权限矩阵
- 新增 PermissionMonitoring.vue 组件，展示权限系统监控仪表板
- 更新 projectPermissions.ts API 客户端，支持接口级权限和监控API
- 新增权限相关的 TypeScript 类型定义
- 更新路由配置，添加接口级权限管理路由
- 更新国际化文本，添加权限管理相关的中文文本

API 客户端新增函数：
- fetchApiEndpointPermissions: 获取接口级权限矩阵
- updateApiEndpointPermissions: 更新接口级权限矩阵
- fetchPermissionMetrics: 获取权限检查指标
- fetchCacheStats: 获取缓存统计
- fetchPermissionAlerts: 获取告警列表
- fetchPermissionHealth: 获取系统健康状态
- resetPermissionMetrics: 重置指标
- clearPermissionAlerts: 清除告警

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

frontend/src/api/projectPermissions.ts

@@ -1,8 +1,47 @@
-import { apiGet, apiPut } from "./axios";
-import type { ProjectRolePermissionsResponse, ProjectRolePermissionsUpdate } from "../types/api";
+import { apiGet, apiPut, apiPost } from "./axios";
+import type {
+  ProjectRolePermissionsResponse,
+  ProjectRolePermissionsUpdate,
+  ApiEndpointPermissionsResponse,
+  ApiEndpointPermissionsUpdate,
+  PermissionMetricsResponse,
+  CacheStatsResponse,
+  AlertsResponse,
+  HealthResponse,
+} from "../types/api";
 
+// 模块级权限（现有）
 export const fetchProjectRolePermissions = (studyId: string) =>
   apiGet<ProjectRolePermissionsResponse>(`/api/v1/studies/${studyId}/permissions/`);
 
 export const updateProjectRolePermissions = (studyId: string, payload: ProjectRolePermissionsUpdate) =>
   apiPut<ProjectRolePermissionsResponse>(`/api/v1/studies/${studyId}/permissions/`, payload);
+
+// 接口级权限（新增）
+export const fetchApiEndpointPermissions = (studyId: string) =>
+  apiGet<ApiEndpointPermissionsResponse>(`/api/v1/studies/${studyId}/api-permissions`);
+
+export const updateApiEndpointPermissions = (studyId: string, payload: ApiEndpointPermissionsUpdate) =>
+  apiPut<ApiEndpointPermissionsResponse>(`/api/v1/studies/${studyId}/api-permissions`, payload);
+
+// 权限系统监控API（新增）
+export const fetchPermissionMetrics = () =>
+  apiGet<PermissionMetricsResponse>(`/api/v1/permission-monitoring/metrics`);
+
+export const fetchCacheStats = () =>
+  apiGet<CacheStatsResponse>(`/api/v1/permission-monitoring/cache-stats`);
+
+export const fetchPermissionAlerts = (level?: string, limit?: number) =>
+  apiGet<AlertsResponse>(`/api/v1/permission-monitoring/alerts`, {
+    params: { level, limit },
+  });
+
+export const fetchPermissionHealth = () =>
+  apiGet<HealthResponse>(`/api/v1/permission-monitoring/health`);
+
+export const resetPermissionMetrics = () =>
+  apiPost<void>(`/api/v1/permission-monitoring/reset-metrics`);
+
+export const clearPermissionAlerts = () =>
+  apiPost<void>(`/api/v1/permission-monitoring/clear-alerts`);
+