The full reminder-email implementation (eventReminderService,
eventReminderTemplates self-heal, ReminderTemplatesPage,
EventReminderOverrideCard) shipped in the CRM bundle but the
FeaturesTab card kept lockedReason=NOT_YET_AVAILABLE — so the
working feature was invisible.
Flip the card to the same shape as customerPortal: status="beta",
real setFlag handler, no disabled/lockedReason. The sub-tab in
Settings → Reminder templates already self-mounts when the flag
is on, and the per-event override card already self-renders on
the event detail page.
Description copy + EN/DE i18n updated to describe what the feature
actually does (per-category pre-event nudge) instead of the old
"coming soon" placeholder.