Initial commit: n8n MCP server for VS Code integration

- Implemented MCP server with 8 n8n tools
- Added n8n API client for workflow operations
- Configured VS Code settings with API authentication
- Added comprehensive documentation and setup guides
- Tested and verified connection to n8n instance

test-connection.js

@@ -0,0 +1,49 @@
+#!/usr/bin/env node
+
+/**
+ * Test script to verify n8n MCP server connectivity
+ * Usage: node test-connection.js
+ */
+
+import { N8nClient } from './dist/n8n-client.js';
+
+const N8N_BASE_URL = process.env.N8N_BASE_URL || 'http://srvdocker02:8098';
+const N8N_API_KEY = process.env.N8N_API_KEY;
+
+console.log('Testing n8n connection...');
+console.log('n8n URL:', N8N_BASE_URL);
+console.log('API Key:', N8N_API_KEY ? '***configured***' : 'not set');
+console.log('');
+
+const client = new N8nClient({
+  baseUrl: N8N_BASE_URL,
+  apiKey: N8N_API_KEY,
+});
+
+async function test() {
+  try {
+    console.log('Fetching workflows...');
+    const workflows = await client.listWorkflows();
+    console.log(`✓ Successfully connected to n8n!`);
+    console.log(`✓ Found ${workflows.length} workflow(s)`);
+    
+    if (workflows.length > 0) {
+      console.log('\nFirst few workflows:');
+      workflows.slice(0, 5).forEach((wf) => {
+        console.log(`  - ${wf.name} (ID: ${wf.id}, Active: ${wf.active})`);
+      });
+    }
+    
+    process.exit(0);
+  } catch (error) {
+    console.error('✗ Connection failed:', error.message);
+    console.error('\nTroubleshooting:');
+    console.error('1. Verify n8n is running:');
+    console.error(`   curl ${N8N_BASE_URL}/healthz`);
+    console.error('2. Check if the URL is correct in your configuration');
+    console.error('3. If authentication is required, set N8N_API_KEY environment variable');
+    process.exit(1);
+  }
+}
+
+test();