DG: Natural Reproduction

Added

• Multi-Generational Inbreeding Lineage Degradation & Lethal Collapse: Implemented full multi-generational inbreeding degradation system across 5 tiers (Tiers 0 to 4):
  • Tier 0 (Wild / Diverse): Full genetic potential, normal breeding.
  • Tier 1 (Mild Inbreeding): -10% scale stunting, -2 HP, birth smoke puff.
  • Tier 2 (Moderate Inbreeding): -25% scale stunting, -20% movement speed, -4 HP, slower walking.
  • Tier 3 (Severe Degradation): Miniature 0.35x scale, -50% HP, -30% speed, black squid ink particles. 100% prime meat drops (beef, pork, mutton, chicken, rabbit) convert to Rotten Flesh & Bones; secondary yields (leather, wool) reduced by 75%.
  • Tier 4 (Lethal Genetic Collapse): Terminal inbreeding failure. Offspring suffers 1 damage per second continuously until death, emitting persistent distress smoke and squid ink particles.
• Gradual Generational Dilution & Hybrid Vigor: Outcrossing degraded livestock with unrelated wild stock steps down the inbreeding tier by 1 level per generation (Tier 4 -> 3 -> 2 -> 1 -> 0). Reaching Tier 0 via outcrossing awards +15% Hybrid Vigor to offspring scale and vitality.
• AnimalLineageHelper: Created dedicated single-purpose utility class managing lineage tier calculations, dilution step-down, attribute penalties, and lethal collapse damage ticks.
• Inbreeding Degradation GameRule: Registered natural-reproduction:inbreeding_degradation (Boolean, default true), integrated into /gamerule, /naturalreproduction command suite, and YACL GUI.