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Adds `hyperframes remove-background` — a local-AI subcommand that mattes a video or image with the u2net_human_seg ONNX model and emits a transparent WebM (VP9-alpha), ProRes 4444 .mov, or RGBA PNG. Drops directly into any composition's <video> tag — no green screen, no API keys, no upload. Auto-picks the fastest available execution provider via onnxruntime-node: CoreML on Apple Silicon, CUDA when HYPERFRAMES_CUDA=1, CPU otherwise. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>