feat: Register Graph Tools in MCP Server Handler (#9654)

Author: tobiu

ai/mcp/server/knowledge-base/services/toolService.mjs

@@ -3,6 +3,7 @@ import {fileURLToPath}          from 'url';
 import DatabaseService          from './DatabaseService.mjs';
 import DatabaseLifecycleService from './DatabaseLifecycleService.mjs';
 import DocumentService          from './DocumentService.mjs';
+import GraphService             from './GraphService.mjs';
 import HealthService            from './HealthService.mjs';
 import QueryService             from './QueryService.mjs';
 import SearchService            from './SearchService.mjs';
@@ -16,11 +17,14 @@ const serviceMapping = {
     ask_knowledge_base   : SearchService           .ask                .bind(SearchService),
     get_class_hierarchy  : QueryService            .getClassHierarchy  .bind(QueryService),
     get_document_by_id   : DocumentService         .getDocumentById    .bind(DocumentService),
+    get_neighbors        : GraphService            .getNeighbors       .bind(GraphService),
+    get_node             : GraphService            .getNode            .bind(GraphService),
     healthcheck          : HealthService           .healthcheck        .bind(HealthService),
     list_documents       : DocumentService         .listDocuments      .bind(DocumentService),
     manage_database      : DatabaseLifecycleService.manageDatabase     .bind(DatabaseLifecycleService),
     manage_knowledge_base: DatabaseService         .manageKnowledgeBase.bind(DatabaseService),
-    query_documents      : QueryService            .queryDocuments     .bind(QueryService)
+    query_documents      : QueryService            .queryDocuments     .bind(QueryService),
+    search_nodes         : GraphService            .searchNodes        .bind(GraphService)
 };
 
 const toolService = Neo.create(ToolService, {