Question on Atom feeds:
I understand that if I have two feeds with overlapping sets of entries (ex: a main feed and a category feed), the common entries must have the same ID in both feeds.
But what if I have two feeds with different forms of the same set of articles? Like a full-text feed and a summary feed? Should the full-text entry and summary-only entry for the same article share an Atom ID?
Put another way, does the unique ID identify the *canonical form *of the entry, or the feed's particular view of it?
(My specific use case at the moment: two feeds used to format the same articles as really-short summaries for Bluesky and as kinda-short summaries for Mastodon and company.)