RenderTexture leak in IsometricImageFurniVisualization, every direction change or thumbnail update leaked a GPU RenderTexture.
Image object leak in FurnitureDynamicThumbnailVisualization, now clears callbacks and src after use.
Image object leak in FurnitureBadgeDisplayVisualization, image objects never cleaned up
Display Container
├── Furniture Container (renders 1st - back)
│ └── All furniture sprites sorted by z-depth
├── Avatar Container (renders 2nd - middle)
│ └── All avatar sprites sorted by z-depth
└── Badge Container (renders 3rd - front)
└── All badge sprites sorted by z-depth
✅ Badges render on top of their furniture
✅ Avatars respect proper 3D depth (in front when in front, behind when behind)
✅ Animated GIFs work beautifully
✅ Clean, maintainable code with just a tiny z-offset
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