DG Natural Reproduction

## [1.3.3+26.2] - 2026-08-08

### Changed & Refactored

- **Smooth Gradual Cramped Space Penalty**: Refactored `AnimalCrampedSpaceHelper` to replace discrete tier steps with a smooth continuous density formula (`penaltyMultiplier = Math.max(0.95 - extraLocalCount * 0.05, 0.40)`). Every extra crowding animal in a confined pen now causes a smooth, incremental 5% scale reduction per entity instead of sudden cliff drops.