The app could run a pipeline and had nowhere to keep what it was making. A
project is an ordered list of scenes, one JSON file each, and it is the only
part of the app that has to survive a reload.
A scene owns its prompt text and the result it produced, and nothing else. v4's
Scene grew three dozen fields; each belongs to the feature that needs it. Per
scene length and fps are deliberately absent — a regenerate uses the project's
values, so a scene cropped on the timeline comes back whole.
The prompt box edits the current scene rather than holding its own copy, so
what is on screen and what a run uses cannot disagree.
app: the region toggles are named buttons in the timeline bar
v4's arrangement. The kit's fallback is one glyph on a rail at each edge of the
window, which is right for a kit that cannot know what its panels are called and
wrong here, where they have names and a bar to put them in.
A pressed toggle was styled only inside a button group, so a standalone one
carried aria-pressed and looked identical either way.
gallery.strip is selectable like its siblings: a filmstrip is the one shape
whose whole job is saying which of these you are on.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
