Digital delivery

1. After an authoritative successful payment, the backend verifies the provider payment state.
2. The subscription/entitlement activates server-side.
3. The applicable Bubu credits become available.
4. The customer signs into Bubu Studio AI.
5. An enabled Generate consumes the defined 180-credit amount.
6. Successful generated media becomes available for download, preview and export.

A browser redirect alone NEVER activates an entitlement. This is the delivery contract for an enabled paid service; live payments and Runway generation remain disabled today.