c2me - Au Naturel edition

Changelog: 0.2.0+alpha.11.20.21 → 0.2.0+alpha.11.20.26

Fixes:

• Fixed circular dependency deadlock in redirectGetRegion
• Fixed multiple threading issues in stronghold and nether fortress generation
• Restored vanilla gradient table for Perlin noise to fix terrain artifacts (floating islands)
• Added coordinate offset to hash-based noise to avoid edge cases near world origin

Performance:

• Replaced HashSet<Long> with LongOpenHashSet for better memory/speed
• Replaced stream operations with direct loops in AsyncSerializationManager
• Hash-based Perlin noise optimization (replaces 16 chained permutation lookups with 8 independent hash calls)
• Removed unused modules and vectorized code

Features:

• Added spawn blacklist module (c2me-opts-spawning) to skip entity instantiation during worldgen
  • Prevents threading issues from mod entity constructors accessing ThreadLocalRandom
  • Default blacklist includes 346 entities from BadMobs config
  • Spawner-based spawning unaffected (mobs can still spawn from spawner blocks)

Configuration:

• fixes.enforceSafeWorldRandomAccess now defaults to false (warning instead of crash for cross-thread random access)