Animal Pen

## [0.2.1] - Polish & Improvements

### Added
- **GUI Screen Interface**
  - Detailed Animal Pen screen accessible via Sneak + Right-click (empty hand)
  - 3D rotating entity preview with proper scaling and lighting
  - Real-time health display with color-coded health bar
  - Breeding progress indicator with visual progress bar
  - Breeding cooldown timer (minutes:seconds format)
  - Passive resource inventory display with item icons
  - ClientProxy for handling client-side screen operations

- **Enhanced Sound System**
  - Ambient animal sounds play periodically from occupied pens
  - Distinct feedback sounds for all tool interactions:
    - Milking sounds for cows/goats
    - Egg collection sounds for chickens
    - Honey/honeycomb collection sounds for bees
    - Shearing sounds for sheep
    - Brushing sounds for armadillos
    - Mushroom stew sounds for mooshrooms
  - Expanded AnimalSoundUtils with ambient sound mappings
  - Volume and pitch variation for more natural audio feedback

- **Breeding Visual Progress**
  - Heart particles spawn during 3-second breeding process
  - Happy villager particles at regular intervals while breeding
  - Celebration particles when breeding completes successfully
  - Visual progress tracking in both world and GUI

### Changed
- Breeding system now only requires feeding 2-4 animals instead of all animals
- Each breeding pair needs 2 food items (one per animal in the pair)
- Breeding progress shown with continuous particle effects
- Improved feedback messaging when insufficient animals/food for breeding
- Block interaction logic refactored for GUI access
- Entity rendering scale increased for better visibility in GUI

### Fixed
- **Critical**: Entity render memory leaks that caused performance degradation over time
  - Render entities now properly cached and reused
  - Cached entities cleared when entity type changes
  - Improved cleanup in AnimalPenRenderer
- **Critical**: Resource depletion exploit when spam-clicking with tools
  - Added proper cooldown enforcement before resource checks
  - Prevents item duplication and resource loss
- Breeding timers now properly reset when breeding is not active
- Particle timers synchronized with breeding progress
- Debug logging removed from production code