FAZA 17: 2.5D Minecraft-Style Terrain + Y-Layer Stacking + Custom Sprites

COMPLETED FEATURES:

 Custom Sprite Integration:
- Player, Zombie, Merchant sprites (0.2 scale)
- 11 custom sprites + 5 asset packs loaded
- Auto-transparency processing (white/brown removal)
- Gravestone system with atlas extraction

 2.5D Minecraft-Style Terrain:
- Volumetric blocks with 25px thickness
- Strong left/right side shading (30%/50% darker)
- Minecraft-style texture patterns (grass, dirt, stone)
- Crisp black outlines for definition

 Y-Layer Stacking System:
- GRASS_FULL: All green (elevation > 0.7)
- GRASS_TOP: Green top + brown sides (elevation 0.4-0.7)
- DIRT: All brown (elevation < 0.4)
- Dynamic terrain depth based on height

 Floating Island World Edge:
- Stone cliff walls at map borders
- 2-tile transition zone
- Elevation flattening for cliff drop-off effect
- 100x100 world with defined boundaries

 Performance & Polish:
- Canvas renderer for pixel-perfect sharpness
- CSS image-rendering: crisp-edges
- willReadFrequently optimization
- No Canvas2D warnings

 Technical:
- 3D volumetric trees and rocks
- Hybrid rendering (2.5D terrain + 2D characters)
- Procedural texture generation
- Y-layer aware terrain type selection

FAZA_13_CHECKLIST.md

@@ -0,0 +1,58 @@
+# FAZA 13: Zombi Delavec (The Alpha System) - Checklist
+
+**Status:** ✅ ZAKLJUČENO
+
+**Datum:** 2025-12-06
+
+---
+
+## ✅ Opravila (Developer)
+
+- [x] Zombi AI:
+    - [x] Spremeni obnašanje NPC Zombija.
+    - [x] Stanja: `Idle` (tava), `Follow` (sledi Alfi), `Work` (kopanje/sekanje).
+- [x] Interakcija (Krotenje):
+    - [x] Klik na zombija preklopi med "Sledi mi" (Follow), "Delaj" (Work) in "Straži" (Stay).
+    - [x] **NOVO:** Work način samodejno išče in uničuje vire (grme, drevesa).
+- [x] Vizualni feedback:
+    - [x] Ikona nad glavo zombija (! ali ?), ko dobi ukaz.
+
+---
+
+## 🧪 Ročno testiranje (Naročnik)
+
+### Test 1: Sledenje
+**Ukaz:** Klikni 1x na zombija.
+**Rezultat:** Oko 👁️. Zombi sledi.
+
+### Test 2: Delo (Novo!)
+**Ukaz:** Klikni 2x na zombija.
+**Rezultat:** Kramp ⛏️. Zombi gre do grma in ga uniči.
+
+### Test 3: Straža
+**Ukaz:** Klikni 3x na zombija.
+**Rezultat:** Ščit 🛡️. Zombi stoji pri miru.
+
+---
+
+## 📋 Potrditev Naročnika
+
+```
+FAZA 13: [STATUS]
+- Testirano: [DA]
+- Datum testiranja: 2025-12-06
+- Opombe: Uporabnik potrdil: "dela"
+
+ODOBRENO ZA FAZO 14: [DA]
+
+Podpis naročnika: User
+```
+
+---
+
+## ➡️ Naslednji koraki
+
+**FAZA 14: Obnova Mesta (Town Restoration)**
+- Implementacija sistema "Projektov" (gradbišča).
+- Prvi NPC Quest: Popravilo Kovačeve hiše.
+- UI za oddajo materiala (Les/Kamen).