The first interactivity that crosses. Until now the device published POSTS and nothing else — a like on your own post lived in your favela feed and stopped there. interaction.md §5.4 freezes the signed set at like/repost/follow/block/reply; this carries the three whose subject is a RECORD. follow and block name an ACTOR, which on atproto is a DID and a favela feed key is not, so they wait on the cross-network identity edge. ⛔ OUR OWN SUBJECTS ONLY, which is what made it buildable without the irreversible decision. A record we authored resolves by pure function and its CID computes from its own bytes — verified against the live repo, exactly matching what pds.7rnx.net serves. A foreign subject still needs the naming decision, and nothing here forces it: liking a stranger's post is withheld with a reason rather than guessed at. Bundle 41.93 MB → 42.17 MB. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>