feat(admin): Complete Phase 3.5.1-3.5.4 Prompt Management System (83%)

Summary:
- Implement Prompt management infrastructure and core services
- Build admin portal frontend with light theme
- Integrate CodeMirror 6 editor for non-technical users

Phase 3.5.1: Infrastructure Setup
- Create capability_schema for Prompt storage
- Add prompt_templates and prompt_versions tables
- Add prompt:view/edit/debug/publish permissions
- Migrate RVW prompts to database (RVW_EDITORIAL, RVW_METHODOLOGY)

Phase 3.5.2: PromptService Core
- Implement gray preview logic (DRAFT for debuggers, ACTIVE for users)
- Module-level debug control (setDebugMode)
- Handlebars template rendering
- Variable extraction and validation (extractVariables, validateVariables)
- Three-level disaster recovery (database -> cache -> hardcoded fallback)

Phase 3.5.3: Management API
- 8 RESTful endpoints (/api/admin/prompts/*)
- Permission control (PROMPT_ENGINEER can edit, SUPER_ADMIN can publish)

Phase 3.5.4: Frontend Management UI
- Build admin portal architecture (AdminLayout, OrgLayout)
- Add route system (/admin/*, /org/*)
- Implement PromptListPage (filter, search, debug switch)
- Implement PromptEditor (CodeMirror 6 simplified for clinical users)
- Implement PromptEditorPage (edit, save, publish, test, version history)

Technical Details:
- Backend: 6 files, ~2044 lines (prompt.service.ts 596 lines)
- Frontend: 9 files, ~1735 lines (PromptEditorPage.tsx 399 lines)
- CodeMirror 6: Line numbers, auto-wrap, variable highlight, search, undo/redo
- Chinese-friendly: 15px font, 1.8 line-height, system fonts

Next Step: Phase 3.5.5 - Integrate RVW module with PromptService

Tested: Backend API tests passed (8/8), Frontend pending user testing
Status: Ready for Phase 3.5.5 RVW integration

frontend-v2/src/framework/layout/TopNavigation.tsx

@@ -1,9 +1,17 @@
 import { useNavigate, useLocation } from 'react-router-dom'
 import { Dropdown, Avatar, Tooltip } from 'antd'
-import { UserOutlined, LogoutOutlined, SettingOutlined, LockOutlined } from '@ant-design/icons'
+import { 
+  UserOutlined, 
+  LogoutOutlined, 
+  SettingOutlined, 
+  LockOutlined,
+  ControlOutlined,
+  BankOutlined,
+} from '@ant-design/icons'
 import type { MenuProps } from 'antd'
 import { getAvailableModules } from '../modules/moduleRegistry'
 import { usePermission } from '../permission'
+import { useAuth } from '../auth'
 
 /**
  * 顶部导航栏组件
@@ -18,6 +26,7 @@ import { usePermission } from '../permission'
 const TopNavigation = () => {
   const navigate = useNavigate()
   const location = useLocation()
+  const { user: authUser, logout: authLogout } = useAuth()
   const { user, checkModulePermission, logout } = usePermission()
 
   // 获取用户有权访问的模块列表（权限过滤）⭐ 新增
@@ -28,7 +37,12 @@ const TopNavigation = () => {
     location.pathname.startsWith(module.path)
   )
 
-  // 用户菜单
+  // 检查用户权限，决定显示哪些切换入口
+  const userRole = authUser?.role || ''
+  const canAccessAdmin = ['SUPER_ADMIN', 'PROMPT_ENGINEER'].includes(userRole)
+  const canAccessOrg = ['HOSPITAL_ADMIN', 'PHARMA_ADMIN', 'DEPARTMENT_ADMIN', 'SUPER_ADMIN'].includes(userRole)
+
+  // 用户菜单 - 动态构建
   const userMenuItems: MenuProps['items'] = [
     {
       key: 'profile',
@@ -40,6 +54,18 @@ const TopNavigation = () => {
       icon: <SettingOutlined />,
       label: '设置',
     },
+    // 切换入口 - 根据权限显示
+    ...(canAccessOrg || canAccessAdmin ? [{ type: 'divider' as const }] : []),
+    ...(canAccessOrg ? [{
+      key: 'switch-org',
+      icon: <BankOutlined />,
+      label: '切换到机构管理',
+    }] : []),
+    ...(canAccessAdmin ? [{
+      key: 'switch-admin',
+      icon: <ControlOutlined />,
+      label: '切换到运营管理',
+    }] : []),
     {
       type: 'divider',
     },
@@ -54,8 +80,13 @@ const TopNavigation = () => {
   // 处理用户菜单点击
   const handleUserMenuClick = ({ key }: { key: string }) => {
     if (key === 'logout') {
+      authLogout()
       logout()
-      navigate('/')
+      navigate('/login')
+    } else if (key === 'switch-admin') {
+      navigate('/admin/dashboard')
+    } else if (key === 'switch-org') {
+      navigate('/org/dashboard')
     } else {
       navigate(`/user/${key}`)
     }