# HyperFrame Schema Compliance Review

## Executive Summary

- Total files reviewed: 4
- Critical issues: 0
- Overall compliance status: PASS

## Critical Issues

None. The compositions follow the HyperFrame schema correctly, including deterministic logic, finite timelines, and proper registration.

## Compliance Checklist

- [x] All compositions have `data-width` and `data-height` attributes
- [x] All timelines are finite with duration > 0
- [x] All compositions registered in `window.__timelines`
- [x] No use of `Math.random()`, `Date.now()`, or non-deterministic code
- [x] Primitive clips have required data attributes (`id`, `data-start`, `data-track`)
- [x] `data-duration` specified for all `<img>` clips (N/A - no `<img>` clips used)
- [x] No manual media playback control (`video.play()`, `audio.pause()`, etc.)
- [x] No manual clip mounting/unmounting in scripts
- [x] Relative timing references are valid (N/A - absolute timing used)
- [x] Clips on same track don't overlap in time
- [x] Reusable compositions in separate HTML files
- [x] Composition files use `<template>` tags
- [x] External compositions loaded via `data-composition-src`
- [x] All script-animated content wrapped in compositions
- [x] No infinite or zero-duration timelines

### [index.html]

**Status**: COMPLIANT

**Issues Found**:

- None. The root composition correctly orchestrates sub-compositions and the A-roll video.

### [compositions/bg-grid.html]

**Status**: COMPLIANT

**Issues Found**:

- None. The script uses deterministic loops and fixed arrays for cube placement. The timeline is registered correctly.

### [compositions/mg-overlays.html]

**Status**: COMPLIANT

**Issues Found**:

- None. The script uses a finite loop for the background grid pulse instead of an infinite repeat, ensuring a finite timeline.

### [compositions/captions.html]

**Status**: COMPLIANT

**Issues Found**:

- None. Captions are grouped and animated deterministically based on the transcript.
