Addon Upkeep Integration: The region GUI now dynamically fetches extra upkeep costs from any addon/plugin implementing a getUpkeepForRegion(Location) method (e.g. GuardianTurrets). All such addons are detected at startup and shown in the log. The GUI displays upkeep contributions per module/addon.
Strict Placement for Guardian Head: Placing the Guardian Stone head is only allowed directly above a Lodestone block. Any other placement is blocked with a user message.