Draft non-prose visuals artifacts (timeline, figure specs) for a survey, grounded in evidence and using citation keys from `citations/ref.bib`. **Trigger**: survey visuals, timeline, figures, visuals, 图表, 时间线, figure spec. **Use when**: survey 的 C4（NO PROSE），已有 outline + claim/evidence + citations，需
Draft non-prose visuals artifacts (timeline, figure specs) for a survey, grounded in evidence and using citation keys from `citations/ref.bib`. **Trigger**: survey visuals, timeline, figures, visuals, 图表, 时间线, figure spec. **Use when**: survey 的 C4（NO PROSE），已有 outline + claim/evidence + citations，需要先把时间线/图规格落盘。