Collects every share card of a site and queues a look at each: the planner MishkaCmsCore.Runtime.ShareCard.redraw_all/2 enqueues, on :share_cards.

It asks the producers for their cards through MishkaCmsCore.Runtime.ShareCard.targets/2, then inserts, in batches of 500:

• a MishkaCmsCore.Runtime.Workers.ShareCardRefreshWorker job for each {:page, id} and {:record, kind, captures}, with the planner's force;
• each Oban.Job changeset a producer answered with, as it is — one on another queue than :share_cards is left out.

Asked for every producer's cards, it then queues a MishkaCmsCore.Runtime.Workers.ShareCardSweepWorker, which deletes the card files none of those looks showed once they have run. A target two producers name is looked at once. While the targets event cannot run — one of its plugins is started but not loaded — the planner waits 30 seconds and asks again.

One planner a site, force and producer waits at a time: a second request while one waits is that one. Once its looks are queued it broadcasts {:share_cards_planned, %{site_id:, force:, producer:, counts: %{producer => looks}}} on planned_topic/0 of MishkaCmsCore.PubSub.