故事板 Director：Build or run a storyboard-director workflow that reads a script, reviews the beat structure, plans professional storyboard shots, validates action timing, expression, and object state, critiques and scores the plan, and outputs detailed storyboard prompts or screenplay-style shot lists. Use when the user wants script-to-storyboard prompts, shot-by-shot visual planning, storyboard review, or a professional breakdown before video generation.
