initial code (#2)

* feat: initial code port from hyperframes-internal

Port all OSS-ready packages from the internal monorepo:
- @hyperframes/core — shared types, HTML generation, GSAP utilities, runtime
- @hyperframes/cli — CLI for creating, previewing, and rendering compositions
- @hyperframes/engine — framework-agnostic rendering engine (BeginFrame + FFmpeg)
- @hyperframes/producer — video rendering pipeline (Puppeteer + FFmpeg)
- @hyperframes/ui-player — browser-based video player component
- @hyperframes/studio — composition editor (React frontend + Hono backend)

Includes regression test suite with Docker-based test harness.

All HeyGen-internal references, deployment infrastructure, and
proprietary assets have been removed. Package names migrated
from @app/* to @hyperframes/*.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* fix: scrub internal codenames and stale references from OSS port

- Replace static.heygen.ai runtime URLs in test fixtures
- Remove internal CDN publish script (publish-hyperframe-runtime.ts)
- Replace sandbox-studio, sandbox-interceptor, __magicEditRuntime
  with neutral names (studio, hyperframe-runtime, __hyperframeRuntime)
- Fix stale Vault API / localhost references in docs
- Remove broken deprecated_studio link

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* fix: remove remaining internal codenames and stale references

- Delete stale producer README.md and PIPELINE.md (referenced nonexistent files)
- Replace "Cerberus" codename with "HyperFrames" in test design reviews
- Replace magic-edit postMessage identifiers with hf-preview/hf-parent
- Rename debug-magic-edit-timeline.ts to debug-timeline.ts
- Replace "Motion Cut" with "HyperFrames" in Timeline comments
- Fix studio/CLI references to nonexistent archive package
  (use local data/projects/ dir, stub render proxy)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

packages/producer/tests/style-11-prod/src/code_review.md

@@ -0,0 +1,50 @@
+# 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.