Fix .env.example for proper local and remote configuration

- Separate configuration sections for local (stdio) and HTTP modes
- Fix variable names: MCP_SERVER_PORT/HOST for local mode
- Change default NODE_DB_PATH to ./data/nodes-v2.db for local dev
- Add missing REBUILD_ON_START variable
- Set NODE_ENV to development by default
- Add clear comments explaining which mode uses which variables
- Update README with cp .env.example .env step

The .env.example now properly supports both deployment modes
and will work out of the box when copied to .env.

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

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

README.md

@@ -27,7 +27,7 @@ This MCP server serves as a comprehensive knowledge base for AI assistants to un
 - Node.js 18+
 - Git (for cloning n8n-docs)
 
-### Setup
+### Quick Start
 
 ```bash
 # Clone the repository
@@ -37,11 +37,17 @@ cd n8n-mcp
 # Install dependencies
 npm install
 
+# Copy environment configuration
+cp .env.example .env
+
 # Build the project
 npm run build
 
 # Initialize and rebuild the database with all nodes
 npm run db:rebuild:v2
+
+# Start the local MCP server (for Claude Desktop)
+npm run start:v2
 ```
 
 ### Deployment Options