Diary Activity Start Versus End Sequence

Create a 12-second diary tutorial from [approved example times]. First reveal the activity-start marker, then its verified end, then the later note-entry marker on a parallel row. Hold all three visible at the end. If the finish is absent, keep the interval open instead of silently estimating a duration; no health conclusions.

Confirm required reference images and timing inputs are present before generating. Keep objects, identities, spatial relationships and light direction consistent. Render the clip when video generation is supported; otherwise supply a timed shot list, reference checklist and generation-ready prompt, labeled as a production plan. Do not claim rendered output without an actual file. Check the opening, transition and final frame against the stated counts and geometry.