Development record

The v0.15.1 release review found the brief at .abcd/development/brief/04-surfaces/39-status.md:28 out of step with the shipped code. It says: The verb fetches 'each status branch whose name is a GitHub username in lower case'; only a non-lower-case-username name is left unfetched. In the code: The binary fetches only the first 500 such branches (internal/core/claim/status.go maxStatusBranches = 500); branches past 500 are counted and not fetched, and their tracking copies deleted, as `abcd status --help` states. The brief never mentions the 500 cap.