feat: Complete overhaul to enhanced documentation-only MCP server

- Removed all workflow execution capabilities per user requirements
- Implemented enhanced documentation extraction with operations and API mappings
- Fixed credential code extraction for all nodes
- Fixed package info extraction (name and version)
- Enhanced operations parser to handle n8n markdown format
- Fixed documentation search to prioritize app nodes over trigger nodes
- Comprehensive test coverage for Slack node extraction
- All node information now includes:
  - Complete operations list (42 for Slack)
  - API method mappings with documentation URLs
  - Source code and credential definitions
  - Package metadata
  - Related resources and templates

🤖 Generated with Claude Code

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

tests/test-complete-fix.js

@@ -0,0 +1,94 @@
+#!/usr/bin/env node
+
+const { NodeDocumentationService } = require('../dist/services/node-documentation-service');
+
+async function testCompleteFix() {
+  console.log('=== Testing Complete Documentation Fix ===\n');
+  
+  const service = new NodeDocumentationService('./data/test-nodes-v2.db');
+  
+  try {
+    // First check if we have any nodes
+    const existingNodes = await service.listNodes();
+    console.log(`📊 Current database has ${existingNodes.length} nodes`);
+    
+    if (existingNodes.length === 0) {
+      console.log('\n🔄 Rebuilding database with fixed documentation fetcher...');
+      const stats = await service.rebuildDatabase();
+      console.log(`\n✅ Rebuild complete:`);
+      console.log(`   - Total nodes found: ${stats.total}`);
+      console.log(`   - Successfully processed: ${stats.successful}`);
+      console.log(`   - Failed: ${stats.failed}`);
+      
+      if (stats.errors.length > 0) {
+        console.log('\n⚠️  Errors encountered:');
+        stats.errors.slice(0, 5).forEach(err => console.log(`   - ${err}`));
+      }
+    }
+    
+    // Test specific nodes
+    console.log('\n📋 Testing specific nodes:');
+    
+    const testNodes = ['slack', 'if', 'httpRequest', 'webhook'];
+    
+    for (const nodeName of testNodes) {
+      const nodeInfo = await service.getNodeInfo(`n8n-nodes-base.${nodeName}`);
+      
+      if (nodeInfo) {
+        console.log(`\n✅ ${nodeInfo.displayName || nodeName}:`);
+        console.log(`   - Type: ${nodeInfo.nodeType}`);
+        console.log(`   - Description: ${nodeInfo.description?.substring(0, 80)}...`);
+        console.log(`   - Has source code: ${!!nodeInfo.sourceCode}`);
+        console.log(`   - Has documentation: ${!!nodeInfo.documentation}`);
+        console.log(`   - Documentation URL: ${nodeInfo.documentationUrl || 'N/A'}`);
+        console.log(`   - Has example: ${!!nodeInfo.exampleWorkflow}`);
+        console.log(`   - Category: ${nodeInfo.category || 'N/A'}`);
+        
+        // Check if it's getting the right documentation
+        if (nodeInfo.documentation) {
+          const isCredentialDoc = nodeInfo.documentation.includes('credentials') && 
+                                !nodeInfo.documentation.includes('node documentation');
+          console.log(`   - Is credential doc: ${isCredentialDoc} ${isCredentialDoc ? '❌' : '✅'}`);
+        }
+      } else {
+        console.log(`\n❌ ${nodeName}: Not found in database`);
+      }
+    }
+    
+    // Test search functionality
+    console.log('\n🔍 Testing search functionality:');
+    
+    const searchTests = [
+      { query: 'webhook', label: 'Webhook nodes' },
+      { query: 'http', label: 'HTTP nodes' },
+      { query: 'slack', label: 'Slack nodes' }
+    ];
+    
+    for (const test of searchTests) {
+      const results = await service.searchNodes({ query: test.query });
+      console.log(`\n   ${test.label}: ${results.length} results`);
+      results.slice(0, 3).forEach(node => {
+        console.log(`   - ${node.displayName} (${node.nodeType})`);
+      });
+    }
+    
+    // Get final statistics
+    console.log('\n📊 Final database statistics:');
+    const stats = service.getStatistics();
+    console.log(`   - Total nodes: ${stats.totalNodes}`);
+    console.log(`   - Nodes with documentation: ${stats.nodesWithDocs}`);
+    console.log(`   - Nodes with examples: ${stats.nodesWithExamples}`);
+    console.log(`   - Trigger nodes: ${stats.triggerNodes}`);
+    console.log(`   - Webhook nodes: ${stats.webhookNodes}`);
+    
+    console.log('\n✅ All tests completed!');
+    
+  } catch (error) {
+    console.error('\n❌ Test failed:', error);
+    process.exit(1);
+  } finally {
+    service.close();
+  }
+}
+
+testCompleteFix().catch(console.error);