Helper text when startDate is provided, showing the locked start day
Pattern options
Interval units
Helper text below day-of-week toggles (when no startDate)
End date label (kept for backwards compat)
"Ends" section label
"After" N events option
"Never" end option
"On date" end option
"events" unit label
Interval label
No end date option (kept for backwards compat)
Pattern label
Days of week
Section title
Labels for RecurrenceSelector component