zk-creative-process-skill

Generic creative material processing for game ad reference videos. Use when the user invokes $zk-creative-process, single, or mix to process new reference videos, generate keyframe contact sheets, create material folders, create product-brief-产品信息.md, analyze game-ad hooks, map reference structures into the user's own product, or build story-direction pools. Supports single for one reference video and mix for multiple same-direction videos analyzed in one folder.