dk.raakode.lab.groups.watch

An indexer's acknowledgement that it follows this space. Written by the indexer into its own repo in the space, for one reason: com.atproto.space.listSpaces returns the spaces an account holds a REPO in, not the spaces it is a member of. An indexer admitted to a group but never written to it is invisible to its own discovery. Writing this once makes the group discoverable forever after. See docs/evidence/S09.md.