josh/bg-removal v0.1.0

Remove backgrounds from images using AI-powered rembg models (photos, portraits, products) and threshold-based removal (line art, drawings, logos). ALWAYS use this skill when the user wants to remove a background, make an image transparent, cut out or isolate a subject, process product photos for e-commerce, remove backgrounds from headshots or portraits, extract foreground elements, or batch-process a folder of images for background removal. Also use when someone mentions transparent PNG, alpha channel extraction, or wants a drawing/sketch on a transparent background instead of white. This skill provides a Python script with model selection, alpha matting for fine edges (hair, fur), and batch processing — do NOT attempt background removal manually without it.