feat: implement AI-optimized MCP tools with 95% size reduction

- Add get_node_essentials tool for 10-20 essential properties only
- Add search_node_properties for targeted property search
- Add get_node_for_task with 14 pre-configured templates
- Add validate_node_config for comprehensive validation
- Add get_property_dependencies for visibility analysis
- Implement PropertyFilter service with curated essentials
- Implement ExampleGenerator with working examples
- Implement TaskTemplates for common workflows
- Implement ConfigValidator with security checks
- Implement PropertyDependencies for dependency analysis
- Enhance property descriptions to 100% coverage
- Add version information to essentials response
- Update documentation with new tools

Response sizes reduced from 100KB+ to <5KB for better AI agent usability.

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

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

scripts/test-direct.js

@@ -0,0 +1,88 @@
+#!/usr/bin/env node
+/**
+ * Direct test of the server functionality without MCP protocol
+ */
+
+const { N8NDocumentationMCPServer } = require('../dist/mcp/server-update');
+
+async function testDirect() {
+  console.log('🧪 Direct server test\n');
+  
+  try {
+    // Initialize server
+    console.log('Initializing server...');
+    const server = new N8NDocumentationMCPServer();
+    
+    // Wait for initialization
+    await new Promise(resolve => setTimeout(resolve, 1000));
+    
+    console.log('Server initialized successfully\n');
+    
+    // Test get_node_essentials
+    console.log('Testing get_node_essentials...');
+    try {
+      const result = await server.executeTool('get_node_essentials', {
+        nodeType: 'nodes-base.httpRequest'
+      });
+      
+      console.log('✅ Success!');
+      console.log('Result type:', typeof result);
+      console.log('Result keys:', Object.keys(result || {}));
+      console.log('Node type:', result?.nodeType);
+      console.log('Required props:', result?.requiredProperties?.length || 0);
+      console.log('Common props:', result?.commonProperties?.length || 0);
+      console.log('Has examples:', !!result?.examples);
+      
+      // Check sizes
+      const size = JSON.stringify(result).length;
+      console.log(`\nResponse size: ${(size / 1024).toFixed(1)} KB`);
+      
+    } catch (error) {
+      console.error('❌ Error executing get_node_essentials:', error);
+      console.error('Error stack:', error.stack);
+    }
+    
+    // Test search_node_properties
+    console.log('\n\nTesting search_node_properties...');
+    try {
+      const result = await server.executeTool('search_node_properties', {
+        nodeType: 'nodes-base.httpRequest',
+        query: 'auth'
+      });
+      
+      console.log('✅ Success!');
+      console.log('Matches found:', result?.totalMatches || 0);
+      console.log('First match:', result?.matches?.[0]?.name);
+      
+    } catch (error) {
+      console.error('❌ Error executing search_node_properties:', error);
+    }
+    
+    // Test get_node_info for comparison
+    console.log('\n\nTesting get_node_info for comparison...');
+    try {
+      const result = await server.executeTool('get_node_info', {
+        nodeType: 'nodes-base.httpRequest'
+      });
+      
+      const size = JSON.stringify(result).length;
+      console.log('✅ Success!');
+      console.log(`Full node info size: ${(size / 1024).toFixed(1)} KB`);
+      console.log('Properties count:', result?.properties?.length || 0);
+      
+    } catch (error) {
+      console.error('❌ Error executing get_node_info:', error);
+    }
+    
+  } catch (error) {
+    console.error('\n❌ Fatal error:', error);
+    console.error('Stack:', error.stack);
+    process.exit(1);
+  }
+  
+  console.log('\n✨ Direct test completed');
+  process.exit(0);
+}
+
+// Run the test
+testDirect().catch(console.error);