Green Background Removal + TSX Generation + Bug Fixes

Removed green backgrounds from 30 tileset PNGs (16.4M pixels!)
 Created mass TSX generation script for 3877 individual objects
 Fixed TiledTestScene cursor crash bug
 Added micro_farm_8x8 JSON loading support
 Documentation: GREEN_BACKGROUND_FIX.md, MASS_TSX_GENERATION.md

Scripts:
- scripts/remove_green_background.py (batch transparency fix)
- scripts/generate_mass_tsx.py (3877 .tsx files generator)

Backups: assets/tilesets/backup_green_bg/

src/scenes/PreloadScene.js

@@ -34,6 +34,7 @@ class PreloadScene extends Phaser.Scene {
         // 🗺️ TILED MAP (JSON export from Tiled Editor)
         this.load.tilemapTiledJSON('farm_map', 'assets/maps/farm_map.json');
         this.load.tilemapTiledJSON('micro_farm_128x128', 'assets/maps/micro_farm_128x128.json'); // 🌾 Testna farma
+        this.load.tilemapTiledJSON('micro_farm_8x8', 'assets/maps/micro_farm_8x8.json'); // 🏕️ Manjša test mapa
         this.load.image('grass_tileset_img', 'assets/tilesets/grass.png');
         this.load.image('water_tileset_img', 'assets/tilesets/water.png');
         this.load.image('decorations_tileset_img', 'assets/tilesets/decorations.png');