feat: implement Docker image optimization - reduces size from 2.6GB to ~200MB

- Add optimized database schema with embedded source code storage
- Create optimized rebuild script that extracts source at build time
- Implement optimized MCP server reading from pre-built database
- Add Dockerfile.optimized with multi-stage build process
- Create comprehensive documentation and testing scripts
- Demonstrate 92% size reduction by removing runtime n8n dependencies

The optimization works by:
1. Building complete database at Docker build time
2. Extracting all node source code into the database
3. Creating minimal runtime image without n8n packages
4. Serving everything from pre-built SQLite database

This makes n8n-MCP suitable for resource-constrained production deployments.

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

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

docs/README.md

@@ -12,6 +12,7 @@ Welcome to the n8n-MCP documentation. This directory contains comprehensive guid
 ### Deployment
 - **[HTTP Deployment Guide](./HTTP_DEPLOYMENT.md)** - Deploy n8n-MCP as an HTTP server for remote access
 - **[Docker Deployment](./DOCKER_README.md)** - Comprehensive Docker deployment guide
+- **[Docker Optimization Guide](./DOCKER_OPTIMIZATION_GUIDE.md)** - Optimized Docker build (200MB vs 2.6GB)
 - **[Docker Testing Results](./DOCKER_TESTING_RESULTS.md)** - Docker implementation test results and findings
 
 ### Development