Bug: load-more link used items.length as next offset, causing offset=20
to lead to page 20 again instead of page 40.
Fix: Use offset + items.length for correct next page calculation.
With 20 items per page: offset=0→20→40→...
Verification:
- Astro build: 0 errors
- Filter preservation: params preserved in URL
- Last page: items.length < totalItems check works
- Invalid offset: Number.isInteger check on line 16
ik
5de8ea939a