Higgsfield Seedance VFX — Footage Transformation

This skill is for editing a clip the user already has: keep a real subject and the real camera move, change only what they ask for. It is the video-to-video sibling of ../higgsfield-seedance/SKILL.md (the general Seedance director). It reuses that skill's grammar verbatim — the six-slot formula, the Prompt-Craft Laws, the preflight linter — and adds the transformation layer below. Do not contradict the parent skill; when a shot needs filter-safety, mode selection, or engine rules, defer to it.

This file is the Seedance 2.0 v2v lane. It stays the right choice when the job needs 4K, mode=std, a platform start/end frame, or a genre hint. If the plate job is running on Seedance 2.5 — 720p ceiling, up to 30 s, many references — the lane is omni_reference with the clip attached as a video reference, and its production doctrine (source ≥ 4 s, duration = source, the four-batch rule, the performance-inheritance clause) lives in ../higgsfield-seedance-2-5/VFX-PIPELINE.md.