Ten Day Ultimatum

Added

• Replaced the vanilla-texture item appearances with custom 3D JSON models and original textures for Terminus Core Fragments and Terminus Cores.
• Rebuilt the Echo Altar as an original multi-level pedestal model with a raised central eye core and four corner pylons, using original altar and altar-brick textures instead of vanilla block textures.
• Echo Altars now signal their location every ten seconds with harmless visual lightning and a 34-block gold-red particle beacon.
• Added four glowing, unbreakable 18-block signal pillars around each altar arena. Existing loaded altars automatically retrofit missing signal pillars.
• Added twelve collectible wearable Heavenly Beast masks. Every zodiac boss always drops its matching Rat/Ox/Tiger/Rabbit/Dragon/Snake/Horse/Goat/Monkey/Rooster/Dog/Pig mask, with an original texture and zodiac-specific full-head model silhouette.

Changed

• Increased Echo Altar frequency from one candidate per 48x48 chunk region to one per 32x32 chunk region in newly explored terrain.
• Expanded the Starter Guide into separate altar-location and Twelve Heavenly Beasts pages, including exact chest, crafting, arena, combat, and drop probabilities.
• Expanded every discovered Echo Compendium entry with ability type, SAN cost, casting distance or area, duration, valid target, and detailed effect; added a dedicated detailed-manual page to the Starter Guide.