Updated mobile friendliness, made loading more efficient, new sorting options.

Filter persistence — Active type filter (All / Images / Videos) and Unseen toggle are now saved to localStorage and restored when the gallery reopens.

Unseen count — The Unseen tab displays a live count of unseen items matching the current type filter, e.g. "Unseen (14)".

M shortcut — While a photo is open in the lightbox, press M to toggle its seen/unseen state. The grid item, status text, and unseen count all update instantly.

Seen status in lightbox — "○ Unseen" or "● Seen" is shown below the photo dimensions whenever the lightbox is open.

Seen indicator cleanup — Removed the green ✓ corner badge from thumbnails and the per-item ✓ hover button. Seen items now dim to 65% opacity (down from 40%) with no overlaid icons.

Mark all seen (bottom) — A "✓ Mark all seen" button now appears at the bottom of the gallery grid, reachable by scrolling to the end.

Version 1.1 - New Features:
* Site specific settings
* Settings save on close
* Save different view profiles