Sleep-timer duration strings (durationHoursMinutesSeconds, durationMinutesSeconds, durationMinutesOnly, durationSecondsOnly) contained literal "?" characters instead of the native hour/minute/second abbreviation in 6 locales. Replaced with correct native short-form units per locale, verified byte-exact against a pinned spec table and against the already-correct neighboring hoursLabel/minutesLabel/secondsLabel values in each file.