video-script

Write a timestamped Chinese narration script (解说词 / 旁白) for an already-analyzed video, then lint/validate it. Use after video-understanding has produced agent_narration_brief.md + vlm_analysis.json, when you need to author the recap narration (style, anti-hallucination, 字数公式, density, hook/throughline). Input: the understanding index in work_dir. Output: narration.json (validated). 触发词: 解说词, 写解说, 视频旁白, narration script, 写稿, 解说文案.