Run fortnightly hourly payroll with overnight shifts, unpaid breaks, re-sent punches and a holiday

# Run hourly payroll for a two-week period Inputs: `employees.csv` (pay type and hourly rate), `punches.csv` (clock-in and clock-out times, local time) and `pay-period.json` (period, week starts, holidays). Report gross pay for every hourly employee for the two-week period. Salaried employees are paid elsewhere; leave them out. - Shift length = clock_out minus clock_in. A shift longer than 6 hours has a 30-minute unpaid break deducted. A shift of exactly 6 hours or less has none. - A shift belongs to the day and the week in which it starts, even if it ends after midnight. - The punch clock sometimes re-sends a punch: rows with the same employee and the same clock_in are one shift. - Overtime is time over 40 hours in one week (Monday to Sunday), paid at 1.5x the hourly rate. - Hours on a shift that starts on a holiday are paid at 2x and do not count toward the 40 hours. - Work in exact hours and minutes; round only the reported figures, to 2 decimals half-up. Write `out/payroll.json`: `{"gross_pay": {"<employee_id>": <pay>, ...}, "overtime_hours": {"<employee_id>": <hours>, ...}, "holiday_hours": {"<employee_id>": <hours>, ... only employees with holiday hours}, "total_gross": <sum of the rounded gross pay figures>}`. List every hourly employee who worked in `gross_pay` and `overtime_hours` (0 if none). ## How this run works - Work on your own: nobody will answer questions in this task, and writing to `ask/` counts against the run. - Write only under `out/`. Create `out/` if it is missing. Inputs are synthetic; don't fetch anything from the network. - Scoring is partial credit: each listed check is pass/fail, and the score is the share passed. Numbers are compared to within 0.005 unless the task says otherwise.