- Consolidate AuctionLogger and AuctionNotificationController into AuctionController
- Add inline logging and notification methods to AuctionController
- Add comprehensive LANG keys for all auction GUI strings
- Update EnumAuctionSort and EnumAuctionDuration to use lang keys
- Remove category filtering system (EnumAuctionCategory deleted)
- Update AuctionFilter to remove category references
- Update GuiAuction and all sub-GUIs to use StatCollector.translateToLocal()
- Update AuctionListing to remove category field and NBT serialization