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/locales/zh-CN.ts

@@ -1150,5 +1150,42 @@ export const TEXT = {
       SITE: "中心",
       DERIVED: "派生",
     },
+    permissionManagement: {
+      title: "权限管理",
+      moduleLevel: "模块级权限",
+      apiLevel: "接口级权限",
+      monitoring: "权限监控",
+      refreshMetrics: "刷新指标",
+      save: "保存",
+      search: "搜索端点",
+      filterModule: "筛选模块",
+      filterMethod: "筛选方法",
+      endpoint: "端点",
+      module: "模块",
+      method: "方法",
+      role: "角色",
+      allowed: "允许",
+      denied: "拒绝",
+      healthStatus: "系统健康状态",
+      healthScore: "健康分数",
+      healthy: "健康",
+      degraded: "降级",
+      unhealthy: "不健康",
+      issues: "发现的问题",
+      totalChecks: "总检查次数",
+      avgResponseTime: "平均响应时间",
+      allowRate: "允许率",
+      errorRate: "错误率",
+      cacheEfficiency: "缓存效率",
+      cacheHitRate: "缓存命中率",
+      cacheItems: "缓存项目数",
+      cacheInvalidations: "缓存失效次数",
+      recentAlerts: "最近告警",
+      time: "时间",
+      level: "级别",
+      type: "类型",
+      message: "消息",
+      noAlerts: "暂无告警",
+    },
   },
 } as const;