HyperFrames Studio conventions

Studio draws one timeline row per top-level element. A project that follows the rules below opens as a short, readable timeline; one that does not opens as a wall of unlabeled rows the user cannot edit. These are conventions for what to build. For how to change a clip, follow /hyperframes-core references/creator-editing-recipes.md and never invent a different form of the same edit.

1. Every scene is a sub-composition

The root composition holds only timed hosts, media and audio. Any scene with nested structure (a div containing children, a title with a subtitle, a chart) is its own file loaded with data-composition-src, wiring in references/sub-compositions.md.

Nested markup left inside the root does not become a row of its own. It hides inside one opaque row that cannot be trimmed or moved part by part.

Author as if a structure lint rejects any violation.