A first implementation exists.
This leverages everything that needs to (scheduler, one-shot task).
It's still not complete though since it needs to also deal with origin_metadataWhen a deposit is posted to the deposit server and the client makes it ready (status `ready-for-check`).
This triggers an asynchronous loading-check task scheduling (as one-shot task).
This can result in deposit ready for load, status `ready-for-load` (when check passes).
This triggers an asynchronous loading-deposit task (as one-shot task).