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_11_CHECKLIST.md

@@ -0,0 +1,68 @@
+# FAZA 11: Gradnja in Obnova (Building) - Checklist
+
+**Status:** ✅ ZAKLJUČENO
+
+**Datum:** 2025-12-06
+
+---
+
+## ✅ Opravila (Developer)
+
+- [x] Implementacija `BuildingSystem.js`:
+    - [x] Build Mode (Toggle 'B').
+    - [x] Menu za izbiro (UI overlay).
+    - [x] Preverjanje materialov (Wood/Stone/Gold).
+    - [x] Logika postavitve objekta (Tile validacija).
+- [x] Novi Objekti Sprites (`TextureGenerator`):
+    - [x] Fence (Ograja).
+    - [x] Wall (Zid).
+    - [x] House (Hiša).
+- [x] Integracija s TerrainSystem:
+    - [x] `placeStructure` metoda za dodajanje dekoracij.
+- [x] Integracija s GameScene:
+    - [x] Input mapping (1, 2, 3 za izbiro v Build Mode).
+
+---
+
+## 🧪 Ročno testiranje (Naročnik)
+
+### Test 1: Meni za Gradnjo
+**Ukaz:** Pritisni 'B'.
+
+**Pričakovani rezultat:**
+- [x] Odpre se "BUILD MODE" meni.
+
+### Test 2: Postavitev Ograje
+**Ukaz:** Pritisni '1' (za Fence) in klikni na prazno travo (imej vsaj 2 Wood).
+
+**Pričakovani rezultat:**
+- [x] Ograja se pojavi.
+- [x] Les se odšteje.
+- [x] "Built Fence!" sporočilo.
+
+---
+
+## 📋 Potrditev Naročnika
+
+```
+FAZA 11: [STATUS]
+- Testirano: [DA]
+- Datum testiranja: 2025-12-06
+- Opombe: Uporabnik potrdil: "top dela"
+
+ODOBRENO ZA FAZO 12: [DA]
+
+Podpis naročnika: User
+```
+
+---
+
+## ➡️ Naslednji koraki (po odobritvi)
+
+Ko naročnik potrdi FAZO 11, se začne:
+**FAZA 12: Napredno Shranjevanje (Persistence)**
+- Nadgradnja `SaveSystem.js`.
+- Shranjevanje Inventarja & Zlata.
+- Shranjevanje Kmetije (Pridelki).
+- Shranjevanje Zgrajenih objektov.
+- Testiranje Loadinga (da hiša ostane tam, kjer je bila).