chore: update n8n to v1.100.1

- Updated n8n from 1.99.1 to 1.100.1
- Updated n8n-core from 1.98.0 to 1.99.0
- Updated n8n-workflow from 1.96.0 to 1.97.0
- Updated @n8n/n8n-nodes-langchain from 1.98.1 to 1.99.0
- Fixed node loader path for n8n-nodes-base
- Rebuilt node database with 526 nodes
- All validation tests passing

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

package.json

@@ -73,14 +73,14 @@
   },
   "dependencies": {
     "@modelcontextprotocol/sdk": "^1.13.2",
-    "@n8n/n8n-nodes-langchain": "^1.98.1",
+    "@n8n/n8n-nodes-langchain": "^1.99.0",
     "axios": "^1.10.0",
     "better-sqlite3": "^11.10.0",
     "dotenv": "^16.5.0",
     "express": "^5.1.0",
-    "n8n": "^1.99.1",
-    "n8n-core": "^1.98.0",
-    "n8n-workflow": "^1.96.0",
+    "n8n": "^1.100.1",
+    "n8n-core": "^1.99.0",
+    "n8n-workflow": "^1.97.0",
     "sql.js": "^1.13.0",
     "uuid": "^10.0.0"
   }

src/loaders/node-loader.ts

@@ -8,7 +8,7 @@ export interface LoadedNode {
 
 export class N8nNodeLoader {
   private readonly CORE_PACKAGES = [
-    { name: 'n8n-nodes-base', path: 'n8n/node_modules/n8n-nodes-base' },
+    { name: 'n8n-nodes-base', path: 'n8n-nodes-base' },
     { name: '@n8n/n8n-nodes-langchain', path: '@n8n/n8n-nodes-langchain' }
   ];