BOHA 94030230e7 fix(attendance): timezone-proof print dates; overnight-only time prefixes ...

Two bugs in the attendance admin print (Tisk on Správa docházky):

1. Viewer-timezone date shift: day rows are built from date-only strings
   ('2026-06-01'), which new Date() parses as UTC midnight per spec; local
   formatting then rendered the PREVIOUS day for any viewer west of UTC —
   a June print opened with '31. 5. Neděle' (a May row holding June 1's
   punches) and every weekday name + weekend tint shifted by one. Czech
   viewers were unaffected (UTC+1/+2), US viewers always hit it.
   formatDate / getCzechWeekday / isWeekendDate now parse the calendar day
   from the string parts — identical output in every timezone.

2. Every time cell carried a bogus date prefix ('1.6. 08:00'): the
   overnight-only guard compared the extracted date part against the raw
   wire shift_date ('2026-06-01T02:00:00') — never equal. Now compares
   normalized date parts; the prefix fires only for true overnight punches.

Verified end-to-end against the production June payload; +8 regression
tests (timezone-proof by construction — parts-based, no UTC parse).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

2026-07-07 16:26:23 +02:00

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