权限监控与管理界面全面美化

重新设计权限系统所有 UI 组件的视觉风格，统一配色、圆角、阴影和交互动效：
- 实时概览：统计卡片加图标和渐变色条，健康评分改为环形进度，告警改为卡片式
- 趋势分析：图表卡片加彩色图标标识，ECharts 配色升级为渐变面积填充
- 访问日志：指标卡片带图标，日志审计改为卡片式入口，IP排行前三高亮
- IP属地：工具栏重设计，排行列表前三渐变高亮，指标卡片统一新风格
- 系统级权限：从 el-table 改为自定义卡片列表，模块块独立圆角卡片
- 项目权限配置：空状态引导优化，成员表格加头像，工具栏加背景容器
- 角色概览卡片：加进度条可视化，hover 微动效
- 接口权限矩阵：工具栏分离布局，表格圆角包裹
- 角色管理抽屉：侧边栏选中态渐变，操作行 hover 高亮

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

frontend/src/api/projectPermissions.ts

@@ -6,6 +6,12 @@ import type {
   CacheStatsResponse,
   AlertsResponse,
   HealthResponse,
+  AccessLogsResponse,
+  SecurityAccessLogsResponse,
+  TrendsResponse,
+  TopDeniedResponse,
+  StatsSummaryResponse,
+  IpLocationsResponse,
 } from "../types/api";
 
 // 接口级权限
@@ -39,6 +45,38 @@ export const resetPermissionMetrics = () =>
 export const clearPermissionAlerts = () =>
   apiPost<void>(`/api/v1/permission-monitoring/clear-alerts`);
 
+// 权限监控 - 新增API
+export const fetchAccessLogs = (params: {
+  study_id?: string;
+  user_id?: string;
+  endpoint_key?: string;
+  role?: string;
+  allowed?: boolean;
+  start_time?: string;
+  end_time?: string;
+  page?: number;
+  page_size?: number;
+}) => apiGet<AccessLogsResponse>(`/api/v1/permission-monitoring/access-logs`, { params });
+
+export const fetchSecurityAccessLogs = (params?: {
+  status_min?: number;
+  auth_status?: string;
+  page?: number;
+  page_size?: number;
+}) => apiGet<SecurityAccessLogsResponse>(`/api/v1/permission-monitoring/security-logs`, { params });
+
+export const fetchPermissionTrends = (period: "24h" | "7d" | "30d" = "24h") =>
+  apiGet<TrendsResponse>(`/api/v1/permission-monitoring/trends`, { params: { period } });
+
+export const fetchTopDenied = (params?: { days?: number; limit?: number }) =>
+  apiGet<TopDeniedResponse>(`/api/v1/permission-monitoring/top-denied`, { params });
+
+export const fetchIpLocations = (params?: { days?: number; limit?: number }) =>
+  apiGet<IpLocationsResponse>(`/api/v1/permission-monitoring/ip-locations`, { params });
+
+export const fetchStatsSummary = () =>
+  apiGet<StatsSummaryResponse>(`/api/v1/permission-monitoring/stats-summary`);
+
 // 权限模板API
 export interface PermissionTemplate {
   id: string;