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-docs-fix.js

@@ -0,0 +1,57 @@
+#!/usr/bin/env node
+
+const { DocumentationFetcher } = require('../dist/utils/documentation-fetcher');
+const { NodeSourceExtractor } = require('../dist/utils/node-source-extractor');
+
+async function testDocsFix() {
+  console.log('=== Testing Documentation Fix ===\n');
+  
+  const docsFetcher = new DocumentationFetcher();
+  const extractor = new NodeSourceExtractor();
+  
+  try {
+    // Test nodes
+    const testNodes = [
+      'n8n-nodes-base.slack',
+      'n8n-nodes-base.if',
+      'n8n-nodes-base.httpRequest',
+      'n8n-nodes-base.webhook'
+    ];
+    
+    for (const nodeType of testNodes) {
+      console.log(`\n📋 Testing ${nodeType}:`);
+      
+      // Test documentation fetching
+      const docs = await docsFetcher.getNodeDocumentation(nodeType);
+      if (docs) {
+        console.log(`  ✅ Documentation found`);
+        console.log(`  📄 URL: ${docs.url}`);
+        const titleMatch = docs.markdown.match(/title:\s*(.+)/);
+        if (titleMatch) {
+          console.log(`  📝 Title: ${titleMatch[1]}`);
+        }
+        console.log(`  📏 Length: ${docs.markdown.length} characters`);
+        console.log(`  🔧 Has examples: ${docs.examples && docs.examples.length > 0}`);
+      } else {
+        console.log(`  ❌ No documentation found`);
+      }
+      
+      // Test source extraction
+      try {
+        const source = await extractor.extractNodeSource(nodeType);
+        console.log(`  ✅ Source code found at: ${source.location}`);
+      } catch (error) {
+        console.log(`  ❌ Source extraction failed: ${error.message}`);
+      }
+    }
+    
+    console.log('\n✅ Test completed!');
+    
+  } catch (error) {
+    console.error('\n❌ Test failed:', error);
+  } finally {
+    await docsFetcher.cleanup();
+  }
+}
+
+testDocsFix().catch(console.error);