The operator approved Phase 5. Decides what the design left open: the build seat runs the
merge check, the facts live in the artifact store, the merge gate composes the mesh as it is
and with the change and judges only what the change adds, a replay lives where its incident
is, and the controller's tests run a bus of their own at the mesh's release. A core issue now
resolves only with a replay or a stated reason, checked by cycle.py.
jochen
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