New: Sign Shops
- Create shops linked to chests
- Place a sign on a chest with [Shop], [MPP], or [Market]
- Right-click sign to browse, left-click chest to manage
- Chest contents auto-sync when closed
- Breaking the sign removes the shop

New: Shop Storage
- SQLite and JSON storage options for shops
- Configure in config: player-shops.storage: sqlite

New: Quantity Selector
- Middle-click items in shops to choose exact amount
- Quick buttons for 1, 16, stack, or max affordable

New: Bulk Sell Confirmation
- /market bulksell <price> to preview
- /market bulksell confirm within 60 seconds

Fixes
- Fixed admin teleport going to wrong location
- Fixed item restocking failing with certain items
- Fixed potential crash when purchasing unavailable items

and much more!