权限管理界面重构：角色概览、生效管理与编辑权限整合

【界面优化】
- 移除权限模板列表和角色概览卡片上的"系统预设"标签，视觉上减少噪音
- 将 PermissionTemplateSelector 改为纯展示组件，重命名为"角色权限概览"
- 移除"应用此模板"按钮及预览面板，卡片仅展示各角色权限统计
- 角色描述改为鼠标悬浮 tooltip 显示，节省卡片空间
- 未生效角色以虚线边框 + 降低透明度区分，悬浮提示状态说明

【生效管理】
- Study 模型新增 active_roles JSON 字段，记录项目已生效角色列表
- 新增 /studies/{study_id}/active-roles GET/PUT 接口
- 数据库迁移 20260518_01：studies 表添加 active_roles 列
- 成员管理的项目角色下拉列表仅显示已生效角色，未生效角色不可分配

【模板管理抽屉重构】
- 抽屉改为三标签页：模板列表 / 生效管理 / 编辑权限
- 生效管理：开关控制各角色生效状态，保存后同步后端
- 编辑权限：左右分栏设计，左侧角色列表点击选中，右侧实时展示权限勾选
- 原独立的角色权限编辑抽屉合并至此，角色概览卡片"编辑权限"直接跳转对应标签页

【操作类型标签统一】
- 系统级权限和编辑权限界面的操作类型标签统一使用细分类型
- 操作类型从粗粒度 read/write 细化为 read/create/update/delete/export
- 颜色规范：读取灰色、创建绿色、更新黄色、删除红色、导出无色
- 权限模板管理接口限制为 ADMIN 角色，修复原先权限过宽的问题

Co-Authored-By: Claude Sonnet 4.6 (1M context) <noreply@anthropic.com>

frontend/src/router/index.ts

@@ -16,10 +16,9 @@ import AuditLogs from "../views/admin/AuditLogs.vue";
 import AdminUsers from "../views/admin/Users.vue";
 import AdminUserApproval from "../views/admin/AdminUserApproval.vue";
 import AdminProjects from "../views/admin/Projects.vue";
-import ProjectMembers from "../views/admin/ProjectMembers.vue";
 import AdminSites from "../views/admin/Sites.vue";
+import PermissionManagement from "../views/admin/PermissionManagement.vue";
 import ProjectDetail from "../views/admin/ProjectDetail.vue";
-import ApiPermissions from "../views/admin/ApiPermissions.vue";
 import ProfileSettings from "../views/ProfileSettings.vue";
 import ProjectOverview from "../views/ia/ProjectOverview.vue";
 import ProjectMilestones from "../views/ia/ProjectMilestones.vue";
@@ -437,15 +436,11 @@ const routes: RouteRecordRaw[] = [
       },
       {
         path: "projects/:projectId/members",
-        name: "AdminProjectMembers",
-        component: ProjectMembers,
-        meta: { title: TEXT.modules.adminProjectMembers.memberLabel, adminProjectPermission: { module: "project_members", action: "read" } },
+        redirect: (to) => ({ path: "/admin/permissions", query: { projectId: to.params.projectId as string, sub: "members" } }),
       },
       {
         path: "projects/:id/api-permissions",
-        name: "AdminApiPermissions",
-        component: ApiPermissions,
-        meta: { title: "接口级权限管理", adminProjectPermission: { module: "project_members", action: "write" } },
+        redirect: (to) => ({ path: "/admin/permissions", query: { projectId: to.params.id as string } }),
       },
       {
         path: "projects/:projectId/sites",
@@ -459,6 +454,12 @@ const routes: RouteRecordRaw[] = [
         component: AuditLogs,
         meta: { title: TEXT.menu.auditLogs, adminProjectPermission: { module: "audit_export", action: "read" } },
       },
+      {
+        path: "permissions",
+        name: "AdminPermissions",
+        component: PermissionManagement,
+        meta: { title: TEXT.menu.permissionManagement, requiresAdmin: true },
+      },
     ],
   },
   {