Mixin Helper

Added

• Guardrails system to prevent accidental modifications to critical classes that could corrupt worlds or crash the JVM
  • Protects chunk generation classes (ChunkGenerator, NoiseBasedChunkGenerator, WorldGenRegion, LevelChunk, ChunkStatus)
  • Protects palette container classes (PalettedContainer, LinearPalette, HashMapPalette, Palette)
  • Protects mixin system internals (org.spongepowered.asm.*)
  • Protects JVM/classloader internals (java.lang.ClassLoader, sun.misc.Unsafe, jdk.internal.*)
  • Protects threading classes (BlockableEventLoop, TickTask)
  • Protects world persistence classes (LevelStorageSource, net.minecraft.nbt.*, LevelData)
• New guardrails config section with:
  • enabled — master toggle (default: true)
  • bypassProtectedClasses — override protection at your own risk (default: false)
  • additionalProtectedPatterns — add your own protected class prefixes
  • excludeFromProtection — selectively unprotect specific classes (requires bypass)
• Early config validation logs warnings at startup when protected classes are referenced
• Guardrails block target-class blacklisting and method removal/nop on protected classes by default