resolve Guides

Every Facebook pipeline starts with the same two questions: which entity is this URL, and what does the world see of it. Facebook URLs are notoriously polymorphic — profiles, pages, groups, posts, profile.php?id= forms, people/ aliases — and guessing wrong wastes every downstream call. Two endpoints settle it.

Almost every Instagram endpoint wants the numeric user id (pk) — and almost every workflow starts with a handle. The gap between the two is where bad data enters pipelines. This is every resolution path that works, and the one that silently does not.