Tileset organization system - 25 TSX files + comprehensive workflow docs

assets/maps/organized_tilesets/04_Environment_Terrain/README.md

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+# 04 Environment Terrain
+
+## Sprite Sheets Included:
+
+- `biome_terrain_tiles`
+- `trees_topdown_pack`
+- `grass_soil_tileset`
+- `seasonal_vegetation_4_seasons`
+- `tree_growth_oak`
+- `tree_growth_pine`
+
+## Usage in Tiled:
+
+1. Map → Add External Tileset...
+2. Select .tsx files from this folder
+3. Tilesets will appear in your Tilesets panel