Fix countdown to show full days by setting end time to end of day

- Always set sale end time to 23:59:59 of target date
- Ensures proper day counting regardless of time selected in admin
- July 11 to July 18 should now show 7 days instead of 2

src/components/SaleCountdown.tsx

@@ -31,8 +31,13 @@ export function SaleCountdown({ hasActiveSale, maxSalePercentage = 5, saleEndDat
       let targetDate: Date;
 
       if (saleEndDate) {
-        // Use the sale end date from admin - ensure proper timezone handling
+        // Use the sale end date from admin
         targetDate = new Date(saleEndDate);
+        
+        // Always set to end of day for proper countdown display
+        const saleDate = new Date(saleEndDate);
+        targetDate = new Date(saleDate.getFullYear(), saleDate.getMonth(), saleDate.getDate(), 23, 59, 59, 999);
+        
         console.log('Sale end date from DB:', saleEndDate);
         console.log('Parsed target date:', targetDate);
         console.log('Current time:', now);