Adds matte/ — an independent implementation of the published VideoMaMa
one-step SVD method (matte/pipeline.py) plus Koolook's temporal windowing,
subject-focused crop/stitch, resolution control (/64, shortest-side) and
auto OOM resolution-backoff. Nodes: KoolookMatteLoader, KoolookMatteSampler,
KoolookMatteFocusCrop, KoolookMatteFocusStitch.
Registered via the existing guarded _merge_node_group("Koolook Matte",
".matte"), so a missing diffusers disables only these nodes. diffusers is
already pulled in by the radiance/whatdreamscost forks, so no new dependency.
Loads (never bundles) the VideoMaMa UNet (CC-BY-NC) + SVD VAE at runtime;
matte/NOTICE records the model licenses and user responsibility.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
