The builder's published package reached the bus library through buildstep,
whose KeptBuildsOf took mesh-sdk's buscalls.ObjectInfo, and buscalls now
imports nats.go for its seat chunks. buildstep's layouts, keys and codecs
are read by modules that never touch the bus (its own guard), so the kept
build of one object is judged from the object's own fields (KeptBuildOf,
SortKept) and the build module lists its store itself. The guard now also
refuses a bus library reached through an import, the kind that let this in.
Builds: design 47 G (join 11 area 4: builds TestThePackageReachesNoBus, buildstep's bus-free guard)
Claude-Session: https://claude.ai/code/session_01NcbgfGKaxw984XyAPfLm4h
jschoubben
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