Two related foot-guns on the admin dashboard and payroll dashboard:
1. Every `timezone.now().date()` call returned the date in UTC, not
in Africa/Johannesburg. Between 22:00 and midnight SAST that's the
NEXT calendar day — so the "today" the dashboard thought it was
could be ahead of what the user sees on the clock. Now uses
`timezone.localdate()` which respects `settings.TIME_ZONE`.
Same fix for `datetime.date.today()` calls — those used the
server's system clock, which on the production VM is set to UTC.
2. "Absences (last 7 days)" and "Paid (Last 60 Days)" both subtracted
the FULL window length and combined it with `>=`, producing N+1
inclusive days. E.g. `today - timedelta(days=7)` with `date__gte`
spans 8 calendar days, not 7. Now subtract N-1 so the windows are
exactly N days. Regression test: DateWindowOffByOneTests.
Findings 12 + 13.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
e797a71b94