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/api/knowledgeBase.ts

@@ -285,3 +285,14 @@ export const getRetrievalModeType = async () => {
   const response = await request.get(`${apiPrefix}/chunks/retrieve_type`);
   return response as any;
 };
+
+// 获取知识库图谱
+export const getKnowledgeGraph = async (kb_id: string) => {
+  const response = await request.get(`${apiPrefix}/knowledges/${kb_id}/knowledge_graph`);
+  return response;
+};
+// 获取知识库图谱实体类型
+export const getKnowledgeGraphEntityTypes = async (query: any) => {
+  const response = await request.get(`${apiPrefix}/knowledges/knowledge_graph_entity_types`,query);
+  return response ;
+};