Add Dockerfile, CLAUDE.md and update README for HuggingFace Space

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CLAUDE.md

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+# n8n MCP Server
+
+## Project Overview
+This is an n8n MCP (Model Context Protocol) server deployed on Hugging Face Spaces.
+
+## Environment Variables
+- `N8N_API_URL` - n8n instance URL
+- `N8N_API_KEY` - n8n API key for authentication
+- `AUTH_TOKEN` - Custom authentication token (min 32 characters)
+- `PORT` - Server port (default: 7860)
+- `MCP_MODE` - MCP mode (http)
+- `LOG_LEVEL` - Logging level (info)
+
+## Deployment
+Deployed via Docker on Hugging Face Spaces.

Dockerfile

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+FROM ghcr.io/czlonkowski/n8n-mcp:latest
+
+# HuggingFace 要求 port 7860
+ENV PORT=7860
+ENV MCP_MODE=http
+ENV LOG_LEVEL=info
+ENV HOST=0.0.0.0
+
+EXPOSE 7860
+
+CMD ["node", "dist/mcp/index.js"]

README.md

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----
-title: N8n Mcp
-emoji: 🌖
-colorFrom: pink
-colorTo: purple
-sdk: docker
-pinned: false
-license: mit
----
-
-Check out the configuration reference at https://huggingface.co/docs/hub/spaces-config-reference
+---
+title: n8n MCP Server
+emoji: 🔧
+colorFrom: purple
+colorTo: blue
+sdk: docker
+pinned: false
+app_port: 7860
+---
+
+# n8n MCP Server
+MCP server for n8n workflow automation.