Permadeath Mod v2.1.3.1 — Engine Hardening, Totem Reliability & Open Source Attribution

This release introduces critical low-level engine fixes, network inventory synchronization, restored entity AI routines, and full Open Source licensing compliance (MIT) for Fabric 1.21.1 / 1.21.4.

📜 Open Source Compliance & Dual Attribution (v2.1.3.1)

• Root License Architecture: Added a formal dual-copyright LICENSE (MIT) explicitly protecting both original baseline works and modern expansion architectures.
• Detailed Component Attribution (NOTICE): Included a granular NOTICE file in packaged resources cataloging all inherited 1–70 progression handlers, structure templates (.nbt), and mixin hooks alongside BOrrad0's exclusive Days 70–110 systems and assets.
• Source Code Licensing Headers: Formally embedded standard MIT compatibility headers across all 132 inherited Java classes without modifying runtime logic or method signatures.

🛡️ Totem Pipeline & Medal Reliability Overhaul (TotemManager)

• Dual-Wield Medal Detection: Fixed cross-hand checking logic (isSurvivorMedal(mainStack) || isSurvivorMedal(offStack)). Holding a regular totem in the main-hand no longer prevents off-hand medals from activating or triggers unintended extra totem consumption.
• Exact Lethal Damage Threshold: Corrected the trigger threshold from finalDamage >= totalLife - 0.1F to finalDamage >= totalLife, preventing sub-lethal hits from popping totems prematurely.
• Network Inventory Sync (sendContentUpdates): Immediate packet synchronization forced via player.currentScreenHandler.sendContentUpdates() upon consuming extra totems, eliminating ghost items and client-server desyncs.
• Active Hand Protection: The inventory consumer prioritizes inactive slots first, preventing the player's held weapon or tool from being cleared.
• Stack-Safe Decrements: Extra totem consumption safely uses decrement(1) without discarding entire item stacks.

🧟 Twilight Giant AI & Anti-Cheese Fix (GiantAIMixin)

• Restored Invasion AI: Updated target filters in GiantAIMixin to recognize both legacy permadeath:giant_zombie and active InvasionGiant tags. Twilight Giants now pathfind properly, target players, and attack with full endgame attributes.
• Anti-Pillar Wind Bursts: Reliable execution of directional wind shockwaves (GUST_EMITTER_LARGE) to counter vertical dirt-pillar cheese.

⚡ Engine Optimizations & Server-First Stability

• Pre-Spawn Idempotency (Day70to79Handler): Cave Spider stacks are registered in MobProcessingTracker prior to world spawning, eliminating recursive loops and duplicate entities on ENTITY_LOAD.
• Memory Leak Cleanups (Day90to99Handler): Registered a dedicated ServerPlayConnectionEvents.DISCONNECT listener to unregister pending dimensional rift trackers when players leave the server.
• Habitat Shadow Expiration: Vex shadows spawned by Habitat Stagnation feature a strict 30-second lifespan (setLifeTicks(600)), preventing mobcap saturation when players flee.
• Immediate Armor Debuff Clearing: Fixed armor penalty cleanup so the -15% reduction is instantly removed the exact tick habitat pressure drops below Level 2.
• Multi-Version Parity: Strict attribute mapping across both supported Fabric environments (GENERIC_* for 1.21.1 and modernized identifiers for 1.21.4).

📦 Installation

• Loader: Fabric (Java 21+)
• Minecraft: 1.21.4
• Dependency: Fabric API