Add n8n MCP server config for ECHO workflow access

[bill143]

Summary

Adds .mcp.json at the repo root so a future Claude session can load the n8n MCP server and work the ECHO workflow (e.g. the "File Ad" Gmail node) directly, instead of through a browser it can't reach.

How it works

• Registers an HTTP MCP server n8n-mcp pointing at https://tradingmagic.app.n8n.cloud/mcp-server/http.
• The auth token is referenced via the ${N8N_MCP_TOKEN} environment variable — no secret is committed to the repo.

Required before it connects (next session)

1. Set env var N8N_MCP_TOKEN to the n8n Bearer token in the environment settings.
2. Ensure the environment's network policy allows outbound HTTPS to tradingmagic.app.n8n.cloud.
3. Start a fresh session so the config is loaded at startup.

Notes

• The current session cannot hot-load MCP servers; the connection must be verified in a new session.
• Consider rotating the n8n token, since it was shared in plaintext during setup.

https://claude.ai/code/session_01AzcXJz5iqKWxr87JYwUco2

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