🔧 v1.0.4-hotfix (Hotfix - Thread Safety Optimization) Current Version

🔧 Thread Safety Fixes ：

✅ Fixed all HashMap to ConcurrentHashMap to prevent concurrent conflicts

✅ Fixed singleton pattern thread safety issues (double-checked locking)

✅ Optimized NBT operation atomicity with weapon-grade locking mechanism

✅ Removed dangerous Thread creation, switched to tick-based system

✅ Fixed async operation safety in ChainLightningSkill

✅ Cleaned up unused methods, resolved compilation warnings

⚡ Multiplayer Game Stability

：

✅ Ensured no crashes when multiple players trigger skills simultaneously

✅ Prevented memory leaks, added resource cleanup mechanism

✅ Unified stable operation in both server and single-player environments