🏗️ Added 3 new asset categories: rudniki (mining), vozila (vehicles), hisne_zivali (farm animals)

assets/slike/hisne_zivali/README.md

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+# 🐄 HIŠNE ŽIVALI (Farm Animals)
+
+Domestic farm animals and pets.
+
+## Categories
+
+### **Livestock**:
+- Cow (milk, meat)
+- Pig (meat)
+- Sheep (wool, meat)
+- Goat (milk, cheese)
+- Chicken (eggs, meat)
+- Duck (eggs, meat)
+- Turkey
+- Rabbit
+
+### **Pets/Companions**:
+- Dog (farm guard, companion)
+- Cat (pest control)
+- Horse (transportation, riding)
+
+### **Special**:
+- Llama
+- Alpaca
+- Donkey
+- Mule
+
+### **Animal Products**:
+- Milk
+- Eggs
+- Wool
+- Feathers
+- Leather
+
+---
+
+**Asset type**: Sprites + Items  
+**Usage**: Farming gameplay, animal husbandry, resources  
+**Format**: PNG (64x64 animals, 32x32 products)