R4e round 2 finding R2-1, ADR 0521: the forge module writes mesh/check from
the checker's owed state, read by a watch, because no event order between the
forge bridge and the forge module is kept by the delivery plan. A reader is
granted from the owner's announcement (ADR 0495 §2-§3), and the checker
announced nothing. It now says every state it keeps, with owed, previews and
verdicts readable: the forge module and the bridge read owed, the indexer
previews, the gate verdicts.