`minimal` was rewritten upstream into a fixed-prompt PTY surface that now
carries its own compaction group, so this branch's token-meter move applies to
it too: the row leaves the group and `tokenMeter` leaves the realm, exactly as
in the other three presets. Master's header prose is kept whole — the note this
branch had added there described a composition that no longer exists.
`docs/event-producer-consumer.*` is generated; regenerated after the merge.