"order_id" path parameter now typed as a UUID

Broker API

The order_id path parameter now declares format: uuid, matching runtime validation. Generated clients may surface stronger typing for this parameter; the response shape is unchanged.

Affected Endpoints

• GET /v1/trading/accounts/{account_id}/orders/{order_id}
• PATCH /v1/trading/accounts/{account_id}/orders/{order_id}
• DELETE /v1/trading/accounts/{account_id}/orders/{order_id}