A run ask has a program built at a commit and run in the build seat's
sandbox over named heads, its input kept by the asker by digest and
measured against a bound before asking (ADR 0644, ADR 0656; design 47's
ask run). The checker asks it for the checking program in milestone
47/B0.
Claude-Session: https://claude.ai/code/session_01NcbgfFSnn24M3GcqttoU7i
