As user front-end, we need a web form where users can drop origin URIs to request their archival.
Upon submission, the URI will be checked against a set of policy rules to verify if it can go through, returning an error message if not. The initial policy is yet to be determined, but it will be probably all closed by default, with carve out for specific whitelist URI patterns that we will add piecemeal.
If the job is accepted, it will be submitted to the one-shot task loading queue, in the high priority queue.
Users should be able to monitor the cooking state of the jobs they submitted via the same form or a related page.