Phase 37: Micro Farm & Expansion System Complete

MICRO FARM SYSTEM (8x8):
- Initial 8x8 farm boundary (center spawn)
- White boundary visualization
- Corner markers for clear boundaries
- Locked tile tracking (Set-based)

 VISUAL FEEDBACK:
- Locked tile overlay (30% black)
- Clear visual distinction (farm vs locked)
- Dynamic rendering (15 tile radius)
- Depth-sorted overlays

 FARMING RESTRICTIONS:
- Block tilling outside farm boundary
- Error messages (floating text)
- Farm boundary validation
- FarmingSystem integration

 EXPANSION SYSTEM:
- 4-direction unlock buttons (N/S/E/W)
- Cost system (50 gold per expansion)
- 2x2 tile unlock increments
- Visual updates (boundaries + overlay)

 UI INTEGRATION:
- Interactive expansion buttons
- Hover effects (color + scale)
- Cost labels (gold display)
- Success/error feedback

 MINIMAP INTEGRATION:
- Farm boundary in minimap
- White box indicator
- Player-relative rendering
- Fixed terrain system compatibility

 TECHNICAL FIXES:
- Added decorationsMap to Flat2DTerrainSystem
- Fixed variable scope issues
- UIScene minimap compatibility
- TerrainSystem.getTile() integration

 FILES CREATED/MODIFIED:
- src/systems/MicroFarmSystem.js (NEW!)
- src/systems/FarmingSystem.js
- src/systems/Flat2DTerrainSystem.js
- src/scenes/GameScene.js
- src/scenes/UIScene.js
- index.html

Session: 1h (00:50-01:19)
Date: 15.12.2024
Status:  PHASE 37 COMPLETE!

src/systems/Flat2DTerrainSystem.js

@@ -16,6 +16,9 @@ class Flat2DTerrainSystem {
         this.pathsLayer = null;
         this.decorLayer = null;
 
+        // Decoration tracking (for interaction system)
+        this.decorationsMap = new Map();
+
         // Textures ready flag
         this.texturesReady = false;