Spirit evolution system is fully implemented. Here's what was added:

**4 Evolved Spirit Forms:**
| Base Spirit | Evolves Into | HP | ATK | Special Move |
|---|---|---|---|---|
| Serenity (Calm) | **Harmoni** | 120 | 16 | Deep Peace (40 dmg) |
| Gembira (Joy) | **Cahaya** | 110 | 20 | Radiant Warmth (38 dmg) |
| Berani (Courage) | **Perwira** | 130 | 18 | Lion's Roar (42 dmg) |
| Fokus (Focus) | **Ilham** | 140 | 14 | Mind Clarity (36 dmg) |

**How it works:**
- Spirits evolve at **Level 3** (triggered after winning battles, which grant XP)
- After defeating an emotion, if any spirit meets the evo threshold, a **dramatic evolution cutscene** plays with particle effects, camera flash, and animated transformation
- Evolved spirits get **massive stat boosts**, a unique **special move** button in battle (golden pulsing ⚡), and +10 bonus damage on their boosted skill
- HUD shows ★ next to evolved spirit levels
- Victory screen displays evolved forms with ★ indicator

**Next Ideas:**
1. **Spirit Fusion System** - Combine two evolved spirits temporarily for an ultra-powerful dual attack against the boss
2. **Training Mini-Game** - Add a mini-game in the PRS room where spirits can train to gain XP faster (e.g., meditation rhythm game)

**Ready to level up your game? Pick one and let's build it!**