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/views/admin/AuditLogs.vue

@@ -177,6 +177,7 @@ import { roleDict, getDictLabel } from "../../dictionaries";
 import { exportAuditCsv } from "../../audit/export/auditExportService";
 import { displayDateTime } from "../../utils/display";
 import { getProjectRole, isSystemAdmin } from "../../utils/roles";
+import { isApiPermissionAllowed } from "../../utils/apiPermissionValue";
 import { TEXT } from "../../locales";
 
 const study = useStudyStore();
@@ -216,11 +217,11 @@ const isAdmin = computed(() => isSystemAdmin(auth.user));
 const projectRole = computed(() => getProjectRole(study.currentStudy, study.currentStudyRole));
 const canProjectExport = computed(() => {
   if (isAdmin.value) return true;
-  return projectRole.value === "PM" && !!permissionMatrix.value?.[projectRole.value]?.["audit_logs:read"]?.allowed;
+  return projectRole.value === "PM" && isApiPermissionAllowed(permissionMatrix.value?.[projectRole.value]?.["audit_logs:read"]);
 });
 const canAccessAuditLogs = computed(() => {
   if (isAdmin.value) return true;
-  return projectRole.value === "PM" && !!permissionMatrix.value?.[projectRole.value]?.["audit_logs:read"]?.allowed;
+  return projectRole.value === "PM" && isApiPermissionAllowed(permissionMatrix.value?.[projectRole.value]?.["audit_logs:read"]);
 });
 
 const ensureAccess = () => {