Manage Hermes MCP server configuration under the "mcp_servers" key in settings.

MCP configuration can be stored at both global and project scopes without being automatically written unless the user performs a configuration action.

Configuration format:

"mcp_servers": %{server_name => server_config}

server_config fields:

• "transport": "stdio" | "http" | "websocket"

• "timeout_ms": integer (optional)
• stdio-specific:
  • "command": string
  • "args": [string]
  • "env": %{string => string}
• http/ws-specific:
  • "base_url": string
  • "headers": %{string => string}