Prisma truncates a JS Date used in a WHERE filter on a @db.Date column to
its UTC date part. Under TZ=Europe/Prague a local-midnight boundary
(new Date(y,m,d) = 22:00/23:00Z of the previous day) therefore filtered as
the PREVIOUS calendar date. Same class as the dashboard fix; full sweep of
every @db.Date filter in the codebase. New shared helper
utcMidnightOfLocalDay() in src/utils/date.ts.
Fixed (all previously off by one day):
- attendance.service: getStatus today+month windows; getWorkfund (last day
of each month was double-counted across months); getPrintData (monthly
print included prev month's last day); listAttendance (admin month view
included prev month's last day AND dropped the selected month's last
day); createAttendance duplicate/overlap validation (checked only the
PREVIOUS day - same-day duplicates were never caught, neighbors falsely
rejected)
- invoice-alerts: the 'splatnost za 3 dny' advance alert had NEVER fired
(due==today+3 was outside the fetched window); window computation
extracted as computeAlertWindow() + pure tests
- invoices.service: month list/totals filter dropped invoices issued on the
month's last day; getInvoiceStats month/year bounds; markOverdueInvoices
boundary; auto paid_date could store yesterday during 00:00-02:00
- received-invoices auto paid_date, issued-orders default order_date: same
night-window write hazard, now via the helper
- attendance.schema: shift_date hardened to isoDateString (bare YYYY-MM-DD)
+9 regression tests (month boundaries, same-day duplicate, last-day-of-month
invoice in list+totals, alert window).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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