FALLBACK merchant list for clients WITHOUT UI support.
Do NOT use this to choose or switch merchants when a UI is available —
call `jobmojito_configuration` instead (it renders an interactive picker),
and do not hand-format a merchant list as text. Use this tool only when the
client cannot render MCP App UI. Returns the user's own account plus any
sub-merchants; after a pick, pass `merchant_id=<chosen id>` on subsequent
calls (OMIT for the own account).
ConnectorNo auth