feat: media expansion surfaces — edit mask, upscale, background removal, interpolation, diarization, meshgen (ADR-0020)
- imagegen.EditRequest.Mask -> sd-server img2img inpainting (white=repaint)
- imagegen.Upscaler + BackgroundRemover, videogen.Interpolator,
audio.DiarizationModel: new optional provider-minted surfaces
- NEW meshgen leaf package (image->3D, glb/stl/obj)
- provider/llamaswap: all five via the /upstream/<model>/<path> passthrough
(upstreamPath helper, shared one-file multipart builder); binary success
bodies validated (non-image, non-video, JSON-mesh rejection); diarization
pins output=json (vtt/srt drop speaker labels)
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
steve
e98493bcfb