A.16:4.2 - Guard discipline
State the guard through named language-state facets and the route condition that matters. Use AE from C.2.4, CD from C.2.5, LanguageStateAnchoringMode from C.2.6, and LanguageStateRepresentationFactorBundle from C.2.7, separately or through one published facet profile. Add witnesses, scope, and GammaTime selectors when needed. “The idea matured” is not a guard.
A summarized chain may omit repeated unchanged fields, but it must leave every move identity, endpoint-rule change, loss, and status change that affects interpretation reconstructible. A later higher-closure publication does not retroactively strengthen an earlier cue; later retreat does not erase the earlier publication.