CI/CD video-quality pipeline harness (scaffolder + cost estimator + report consolidator)

A dependency-free (pure standard-library) Python companion that wires perceptual quality measurement into a pipeline without computing any metric itself (FFmpeg/libvmaf does that; the gate DECISION lives in 5.5's video-quality-gate.py). --scaffold {github,gitlab,jenkins,docker} prints a ready-to-use, version-pinned config: a GitHub Actions workflow (matrix fan-out per rendition, container run, content-hash reference cache, JUnit + artifact upload), a GitLab CI file (GPU runner tag, image pin), a