Narrative Caption

@hypit/narrative-caption is the explicit adapter between source-neutral Caption content and Narrative time. It owns NarrativeCaptionBinding and projects that relation through one explicit NarrativeProjection to complete, flat, absolute CaptionTiming. Binding joins by Unit and Token identities rather than array position. Missing Units, Tokens or Boundaries fail with their complete identity path; the adapter never drops content, pads a zero interval, shortens overlaps or forms Cues.

Script may emit a CaptionDocument and its binding from the same parse; the author does not repeat display text or unit-to-Token correspondence. Caption renderers consume only CaptionDocument and CaptionTiming and therefore do not depend on Narrative or speech.

<narrative-caption:Timing id="story-captions"
  document={story.caption}
  binding={story.caption-binding}
  projection={speech}/>