- form extensions: placement across three plugins, required plugins' tabs
and fields, Hide with neighbours and whole tabs, spans, grouping only of
extended forms; every remaining boot error with plugin, controller and
offending name
- record events: the pure snapshot/diff (create, update, pointers, times as
instants, timestamps and key omitted, per-locale translations) and the
value helpers
- descriptors: MatchPattern edge cases, MatchPath ordering, types without
Content, duplicate Model/Controller across plugins