builder_build reads the builds and asked states, and the tools bundle follows the catalog half itself (registrations for the
watched branches, revision per branch) for `newest`; the manifest names the tool and the two seat verbs.
Builds: design 47 G §589, A-87
Claude-Session: https://claude.ai/code/session_01NcbgfGKaxw984XyAPfLm4h
