Detect both clients and install the local REA MCP registration the same way setup already handles the other agents. Grok Build edits only the REA tables in its TOML config, sets startup_timeout_sec to 30, and removes rea from disabled_mcp_servers. Grok Bot writes mcpServers.rea into mcp.json. Setup does not call the account API. Uninstall keeps comments in an inline table whose only server was REA.