# HyperFrame Schema Compliance Review

## Executive Summary

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

## Critical Issues

None found. All compositions follow the deterministic and finite timeline requirements.

## 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 images 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 - no relative 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

## File-by-File Analysis

### index.html

**Status**: COMPLIANT

**Observations**:

- Correctly defines the root composition with `data-composition-id="root"`.
- Properly loads sub-compositions using `data-composition-src`.
- Registers the root timeline in `window.__timelines`.
- Audio clip has all required attributes (`id`, `data-start`, `data-duration`, `data-track`).

### compositions/intro.html

**Status**: COMPLIANT

**Observations**:

- Uses `<template>` tag correctly.
- Composition root has `data-width`, `data-height`, and `data-duration`.
- Script is deterministic (uses string splitting and fixed durations).
- Timeline is correctly registered.

### compositions/captions.html

**Status**: COMPLIANT

**Observations**:

- Uses `<template>` tag correctly.
- Composition root has `data-width`, `data-height`, and `data-duration`.
- Script is deterministic, iterating over a fixed array of caption data.
- Timeline is correctly registered.

### compositions/main.html

**Status**: COMPLIANT

**Observations**:

- Uses `<template>` tag correctly.
- Composition root has `data-width`, `data-height`, and `data-duration`.
- Video clip has all required attributes (`id`, `data-start`, `data-duration`, `data-track`).
- Script-animated content (`.stats-container`) is correctly wrapped inside the `main` composition.
- Timeline is correctly registered.

## Actionable Fixes

No fixes required. The project structure and implementation are in full accordance with the HyperFrame schema.
