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>

package.json

@@ -6,6 +6,7 @@
   "scripts": {
     "build": "tsc",
     "rebuild": "node dist/scripts/rebuild.js",
+    "rebuild:optimized": "node dist/scripts/rebuild-optimized.js",
     "validate": "node dist/scripts/validate.js",
     "test-nodes": "node dist/scripts/test-nodes.js",
     "start": "node dist/mcp/index.js",