Recurrent Complex Volts

Fixes

• Fixed generationInfoID lookup and persistence across NBT and structure operation paths, so generation metadata is now preserved correctly.
• Corrected Entry.equals behavior in world structure generation data, preventing invalid comparisons and related cache/key issues.
• Improved handling of unknown or missing world data, especially loot and item-related content, including proper cache invalidation when content becomes available again.
• Improved invalid entity ID handling with a safer fallback path.
• Fixed stale universal transformer preset state after config reloads.
• Fixed chat command functionality on Java 24+

Performance and Stability

• Improved thread safety in structure generation by making caches concurrent, adding per-chunk locking, and tightening cache construction safeguards.
• Improved chunk-lock lifecycle handling to make generation more reliable under concurrency.
• Reduced repeated warnings and lookup cost by caching missing presets and missing entities.
• Reduced worldgen log spam and improved diagnostics for missing-content errors.
• Reduced overhead in structure hook processing, reflective lookups, checked-chunk tracking, and chunk packing logic.
• Improved patterned generation and loot-related runtime behavior.

Worldgen and Placement

• Improved selective placer filtering for more stable surface candidate selection on uneven terrain.
• Fixed ray-based placement failures so invalid placements are no longer reused.
• Improved ray averaging precision to reduce placement instability from tiny floating-point differences.
• Added a config option for vertical spread tolerance in ray hits, making uneven-terrain placement more predictable (rayAverageMaxHeightSpread).
• Tightened uneven-ray validation and improved related feedback.