Forces realistic animal transport. No more direct dealer-to-barn buying — animals only travel by livestock trailer.
How it works:
– Without a trailer: the buy UI is hidden at the dealer and at your own barn. Viewing and selling still work.
– With a trailer: vanilla behaviour. Animals go into the trailer and you drive them home yourself.
Multiplayer-safe: the server enforces the rule via AnimalBuyEvent, so a modified client cannot bypass the hidden UI.
Whitelist: chickens (and rabbits) are exempt by default, since the base game has no transport trailer for them. Editable in scripts/animalsTrailerOnly.lua.
