refactor: 项目管理菜单改造为下拉导航组

- 新增 SidebarNavGroup 组件支持可展开导航组
- 路由从 /console/projects 调整为 /console/project/*
- 成员管理页面独立为子菜单
- 新增权限配置、技能配置占位页面
- URL 驱动展开状态，刷新保持
- 更新 README.md 和 specs

src/App.jsx

@@ -16,9 +16,11 @@ import SkillConfigPage from './pages/console/SkillConfigPage.jsx';
 import LogsPage from './pages/console/LogsPage.jsx';
 import TasksPage from './pages/console/TasksPage.jsx';
 import TaskDetailPage from './pages/console/TaskDetailPage.jsx';
-import ProjectsPage from './pages/console/ProjectsPage.jsx';
+import MembersPage from './pages/console/MembersPage.jsx';
 import MemberConfigPage from './pages/console/MemberConfigPage.jsx';
 import AddMemberPage from './pages/console/AddMemberPage.jsx';
+import PermissionsPage from './pages/console/PermissionsPage.jsx';
+import SkillsConfigPage from './pages/console/SkillsConfigPage.jsx';
 import ConsoleReviewListPage from './pages/console/ConsoleReviewListPage.jsx';
 import ConsoleReviewDetailPage from './pages/console/ConsoleReviewDetailPage.jsx';
 
@@ -63,9 +65,12 @@ function App() {
                             <Route path="logs" element={<LogsPage />} />
                             <Route path="tasks" element={<TasksPage />} />
                             <Route path="tasks/:taskId" element={<TaskDetailPage />} />
-                            <Route path="projects" element={<ProjectsPage />} />
-                            <Route path="projects/members/add" element={<AddMemberPage />} />
-                            <Route path="projects/members/:memberId/config" element={<MemberConfigPage />} />
+                            <Route path="project" element={<Navigate to="members" replace />} />
+                            <Route path="project/members" element={<MembersPage />} />
+                            <Route path="project/members/add" element={<AddMemberPage />} />
+                            <Route path="project/members/:memberId/config" element={<MemberConfigPage />} />
+                            <Route path="project/permissions" element={<PermissionsPage />} />
+                            <Route path="project/skills" element={<SkillsConfigPage />} />
                         </Route>
 
                         <Route path="/admin" element={<AdminLayout />}>