feat(index): add homepage with dashboard cards and knowledge graph support

- Add new Index view with dashboard layout and quick action cards
- Create TopCardList component to display core data management options
- Add GuideCard and VersionCard components for user guidance
- Add QuickActions component for common operations
- Create KnowledgeGraph and KnowledgeGraphCard components for knowledge base visualization
- Add comprehensive SVG assets for index page (apps, arrows, management icons)
- Add common API module for shared request utilities
- Extend knowledgeBase API with knowledge graph endpoints (getKnowledgeGraph, getKnowledgeGraphEntityTypes)
- Update i18n translations for English and Chinese with new index page strings
- Update routing configuration to include new Index route
- Update menu configuration to reflect new navigation structure
- Update KnowledgeBase CreateModal and Private view components
- Add TypeScript types for Index page components
- Improve overall UI/UX with new dashboard-style homepage

web/src/routes/index.tsx

@@ -35,6 +35,7 @@ const componentMap: Record<string, LazyExoticComponent<ComponentType<object>>> =
   BasicLayout: lazy(() => import('@/components/Layout/BasicLayout')),
   LoginLayout: lazy(() => import('@/components/Layout/LoginLayout')),
   // 视图组件
+  Index: lazy(() => import('@/views/Index')),
   Home: lazy(() => import('@/views/Home')),
   UserMemory: lazy(() => import('@/views/UserMemory')),
   UserMemoryDetail: lazy(() => import('@/views/UserMemoryDetail')),

web/src/routes/routes.json

@@ -2,6 +2,7 @@
   {
     "element": "AuthLayout",
     "children": [
+      { "path": "/index", "element": "Index" },
       { "path": "/user-management", "element": "UserManagement" },
       { "path": "/model", "element": "ModelManagement" },
       { "path": "/space", "element": "SpaceManagement" },