Fixed
- Calendar day and week views: the hour labels in the left time gutter were clipped when using the 12-hour clock, dropping the leading digit (e.g. "8:00 AM" showed as ":00 AM"). The gutter was a fixed 48px, too narrow for right-aligned 12-hour labels like "10:00 AM"/"12:00 PM", so the overflow was cut off at the edge. The gutter now uses a shared
--cal-gutter-widthtoken wide enough to hold 12-hour labels; 24-hour clock is unaffected. (#526)