The month-shift anchor discarded the day returned by jalaliToGregorian:
new Date(gy, gm-1, 1) instead of new Date(gy, gm-1, gd). Jalali months
start mid-Gregorian-month (مهر ۱ = 2026-09-23), so the anchor landed on
the 1st of the Gregorian month — still inside the SAME Jalali month
(شهریور ۱۰) — and «ماه بعد» appeared dead while «ماه قبل» only seemed
to work because its wrong target showed a different label. This was also
the source of the reported ~22-day date mismatches.
- shiftMonth now keeps the converted day (gy, gm, gd)
- nav buttons fire on pointerup/click/keyboard with a dedupe guard so the
action survives browsers that swallow the click event
- buttons got hover feedback (cursor-pointer, hover:bg-slate-100,
transition-colors)
Verified against the library math: from شهریور ۱۴۰۵, next → مهر ۱۴۰۵,
prev → مرداد ۱۴۰۵; confirmed in the deployed bundle.
ali_mohaghegh
7f58593f04