A-336 holds for every start of a pipeline: a package-published heard before its branch's catalog half was held still placed steps from empty entries. Its pipelines now start with no steps, placed by A-327's path once the half is held. The hand start already refuses a branch whose half is not held. Builds: design 47 G §200, A-327, A-336 Claude-Session: https://claude.ai/code/session_01NcbgfGKaxw984XyAPfLm4h