[MRE] Matter-Replication Engine

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🛠️ Version 2.0.0 - The Architecture & UX Overhaul

⚠️ NOTE: This is a massive milestone release. Over 60%+ of the mod's core codebase has been completely rewritten to ensure maximum performance, server stability, and flawless user experience.

🔄 Core Architecture & Backend Rewrite

• Performance Explosion ($O(1)$ Lookups): Scrapped the old, resource-heavy lookup loops. The replication catalog backend has been rebuilt using highly optimized HashSet caching. Even with thousands of items from massive modpacks, GUI rendering and item tracking now happen in constant time with zero footprint on the CPU.
• Hardened Server-Side Validation: Fully decoupled client-side rendering from server-side authority. The server now independently validates all replication requests, checking the player's true capability progress and current GUI state. Exploit packets are now completely useless.
• Robust Capability Persistence: Fixed a critical vanilla bug inside PlayerEvent.Clone. Your research data is now perfectly secure and properly persists through player deaths and interdimensional travel (Nether/End portals).

🎨 GUI & User Experience (UX) Enhancements

• Advanced Grid Click Logic: Replicated and enhanced the definitive creative-mode inventory feel:

• Left Click: Pulls 1 item onto the cursor. Stacks smoothly if you're already holding the same item, and overflows cleanly into the inventory if the cursor stack limit is reached.

• Shift + Left Click: Instantly crafts/replicates maximum possible stacks directly into your inventory slots, perfectly respecting available space.

• Scroll Wheel Click: Instantly snatches a full stack of the selected item straight onto your cursor.

• Cursor Anti-Overwrite Protection: The duplication menu now safely recognizes any custom items (like enchanted tools or weapons) currently held on your cursor and protects them from being overwritten or deleted.

• Smart Scrollbar Input Locking: The item catalog grid now automatically locks all replication inputs while you are actively dragging the scrollbar thumb. No more accidental item spawning while scrolling through your massive library.

• Dynamic Item Tooltips (NEW): Hovering over items in the catalog now provides rich, contextual data feedback.

🐛 Bug Fixes

• Fixed multiplayer desync where clients would occasionally "blind-out" regarding items currently held on their cursor.
• Fixed server-side memory leaks caused by excessive item entity dropping when players replicated items with a full inventory.
• Fixed multi-stage Tab-autocompletion crashes on dedicated servers for complex NBT-driven commands.

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