Copper Age Backport Patch

Highlights

• Official 1.0.0 Stable Release: Transitioning out of beta with full feature parity across NeoForge and Fabric on Minecraft 1.21.1.
• Complete clean-room architecture: Zero-copy implementation under the MIT license, free of restrictive upstream code or external dependencies.

Added

• Canonical Creative Mode Spawn Eggs Placement: Positioned the Copper Golem Spawn Egg directly after the Cod Spawn Egg and before the Cow Spawn Egg on both NeoForge and Fabric loaders, precisely matching the official Minecraft 1.21.9 reference inventory sequence.
• JEI / EMI / REI Information Pages: Added detailed in-game recipe and mechanic guide pages for copper equipment, golem oxidation, waxing, and shelf interactions across all 29 supported language localizations.
• Anvil Repair Support: Copper armor and copper tools can now be repaired on an Anvil using Copper Ingots (#c:ingots/copper).
• Full Tool Trims Compatibility: Seamless smithing trimming support for all 5 copper tools (Sword, Axe, Pickaxe, Shovel, Hoe) across 4 patterns and 10 materials when the Tool Trims mod is installed.
• Native Copper Armor Trims: Complete model overrides for all 4 copper armor pieces with 10 standard trim materials and high-contrast copper-on-copper rendering via the copper_darker palette.
• Conditional Modern Spawn Egg Icon: Automatic detection of Vanilla Backport with client configuration override (AUTO, MODERN, CLASSIC).
• Jade HUD Integrations: Real-time display of Copper Golem oxidation levels, waxing status, held items, antenna items (such as poppies gifted by Iron Golems), and visual Copper Shelf inventory previews.
• Create & Better Combat Integration: Bidirectional nugget/ingot crafting recipes, Crushing Wheel recycling, and weapon attributes with attack sweeping hitboxes.

Fixed

• Fabric Spawn Egg Tint Override: Fixed reflection handling on Fabric's ColorProviderRegistry to resolve dynamic proxy interfaces correctly despite bytecode type erasure, ensuring the modern spawn egg renders without color filter distortions.
• NeoForge Creative Tab Repositioning: Resolved tab duplicate constraints by dynamically removing upstream end-of-tab entries and rebinding insertion anchors directly to live parent entries.
• Copper Armor Durability: Restored canonical durability values based on the standard multiplier of 11 (Helmet: 121, Chestplate: 176, Leggings: 165, Boots: 143), resolving indestructible armor.
• Copper Axe in Combat Tab: Restored missing Copper Axe to the Creative Combat tab directly following the Stone Axe.
• NeoForge Bootstrap Crash: Eliminated duplicate ResourceKey[minecraft:armor_material / minecraft:copper] registry collision crash on NeoForge 21.1.237+ via thread-safe memoized interceptor.