- Add @input handlers to text/number inputs (startNumber, prefix, leadingZeros)
- Add @change handler to checkbox (borderToggle)
- Remove updateUrl() call from generateLabels() since it's now handled by events
The URL now stays in sync with the form state at all times, not just
when clicking "Regenerate Labels".
Parameters (startNumber, prefix, leadingZeros, borderToggle) are now:
- Read from URL query string on page load
- Updated in URL when clicking "Regenerate Labels"
This allows bookmarking and sharing specific label configurations.
Update horizontal padding from 8.45mm to 8.6mm and gap from 2.55mm
to 2.5mm to match official Label Planet LP189/25 specifications
for Avery L4731REV-25 compatible labels.
