c2me - Au Naturel edition

Automatically generated changelog:

Bug Fixes

Threading & Deadlocks

• Fixed lost wakeup race condition in C2MEStorageThread - Storage threads now always wake on new work, preventing deadlocks particularly with Distant Horizons
• Fixed circular dependency deadlock in redirectGetRegion - Removed wait that caused indefinite hangs during world creation when mods like DataAnchor accessed chunks during block entity ticking
• Fixed thread pool exhaustion deadlock in MixinProtoChunk.getNeedBlending() - No longer blocks with join(), returns safe default if future not complete

Race Conditions

• Fixed race condition in queue counters - Changed volatile int → AtomicInteger
• Fixed cache eviction order in ObjectCachingUtils - Now correctly evicts before insert

Structure Generation

• Fixed missed threading fixes in Stronghold and Nether Fortress generation - Cherry-picked from upstream, fixes issue #402

Compatibility

• Made ChunkStatus.SPAWN single-threaded - Avoids entity attribute contention with entity-heavy mods (Alex's Mobs, etc.)

Performance Improvements

• Replaced HashSet<Long> with LongOpenHashSet in LongHashSet - Eliminates boxing overhead for primitive long operations
• Replaced stream operations with direct loops in AsyncSerializationManager - Spark profiling showed stream operations taking 3.29% of tick time on long ticks; now uses EnumMap loop for LightType and direct loop for block entities
• Added pre-cached numeric index strings in ChunkDataSerializer - Reduces string allocation
• Zero-allocation aquifer similarity calculation - Optimized hot path in world generation