Test Case: 3-day range starting from today
Start Date: 2025-12-19
End Date: 2025-12-21
Expected: Should show only 3 days (Dec 19 - Dec 21), with past dates disabled
❌ Showed 7 days starting from weekStart, ignoring weekly priority dates
✅ Shows only days between startDate and endDate
✅ Disables past dates within the allowed range