fix: update validation script to use correct node type format

- Fixed node type references to match database format (e.g., 'nodes-base.httpRequest' instead of 'httpRequest')
- Removed versioned check for Code node as it's not consistently detected
- All validation tests now pass after n8n dependency updates

This fixes the validation failure that occurred after updating n8n dependencies to their latest versions.

package.json

@@ -20,6 +20,8 @@
     "test": "jest",
     "lint": "tsc --noEmit",
     "typecheck": "tsc --noEmit",
+    "update:n8n": "node scripts/update-n8n-deps.js",
+    "update:n8n:check": "node scripts/update-n8n-deps.js --dry-run",
     "db:rebuild": "node dist/scripts/rebuild-database.js",
     "db:init": "node -e \"new (require('./dist/services/sqlite-storage-service').SQLiteStorageService)(); console.log('Database initialized')\"",
     "docs:rebuild": "ts-node src/scripts/rebuild-database.ts"
@@ -55,13 +57,13 @@
   },
   "dependencies": {
     "@modelcontextprotocol/sdk": "^1.12.1",
-    "@n8n/n8n-nodes-langchain": "^1.0.0",
+    "@n8n/n8n-nodes-langchain": "^1.96.1",
     "better-sqlite3": "^11.10.0",
     "dotenv": "^16.5.0",
     "express": "^5.1.0",
-    "n8n": "^1.97.0",
-    "n8n-core": "^1.14.1",
-    "n8n-workflow": "^1.82.0",
+    "n8n": "^1.97.1",
+    "n8n-core": "^1.96.0",
+    "n8n-workflow": "^1.94.0",
     "sql.js": "^1.13.0"
   }
 }