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James Russo 8551cffddd docs: add AGENTS.md for universal AI assistant configuration (#278 )

## What

Adds `AGENTS.md` at two levels:
1. **Repo-level** (`/AGENTS.md`) — for contributors working on HyperFrames itself
2. **Project-level** (`packages/cli/src/templates/_shared/AGENTS.md`) — scaffolded into user projects by `hyperframes init`

Also replaces the previous `AGENTS.md → CLAUDE.md` symlink with a standalone file.

## Why

AGENTS.md is the emerging universal standard for AI coding tool configuration, supported by Claude Code, Cursor, GitHub Copilot, Gemini CLI, and Codex (60K+ repos). Remotion already has one. For a project that positions itself as AI-native, this is a gap.

The project-level file (scaffolded by `init`) ensures every AI tool — not just Claude — gets framework context when working on a user's composition project. The symlink was replaced because symlinks are fragile on Windows and the content should differ (repo-level covers build/test, project-level covers composition rules).

## How

- **Repo-level AGENTS.md**: Build/test/lint commands, project structure, key conventions, skills install, doc links
- **Project-level AGENTS.md**: Composition-specific — skills, CLI commands, project structure, linting workflow, key rules, doc links
- **CLAUDE.md** remains for Claude-specific skill invocation syntax (slash commands)

## Test plan

- [ ] Verify AGENTS.md renders correctly on GitHub
- [ ] Verify no duplication with CLAUDE.md (AGENTS.md = universal basics, CLAUDE.md = Claude-specific slash commands)
- [ ] Manual testing performed
- [x] Documentation updated (if applicable)

2026-04-14 19:13:26 -07:00

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Hyperframes

Open-source video rendering framework: write HTML, render video.

Skills

This repo ships AI agent skills via vercel-labs/skills. Install them before writing compositions — they encode framework-specific patterns that generic docs don't cover.

npx skills add heygen-com/hyperframes   # HyperFrames skills
npx skills add greensock/gsap-skills     # GSAP animation skills

Build & Test

bun install     # Install dependencies (NOT pnpm — do not create pnpm-lock.yaml)
bun run build   # Build all packages
bun run test    # Run all tests

Linting & Formatting

Uses oxlint and oxfmt (not eslint, not prettier, not biome).

bunx oxlint <files>        # Lint
bunx oxfmt <files>         # Format
bunx oxfmt --check <files> # Check formatting (CI / pre-commit)

Always lint and format changed files before committing. Lefthook pre-commit hooks enforce this automatically.

Composition Validation

After creating or editing any .html composition:

npx hyperframes lint       # Static HTML structure check
npx hyperframes validate   # Runtime check (headless Chrome — catches JS errors, missing assets)

Both must pass before previewing or considering work complete.

Project Structure

packages/
  cli/                  → hyperframes CLI (create, preview, lint, render)
  core/                 → Types, parsers, generators, linter, runtime, frame adapters
  engine/               → Seekable page-to-video capture engine (Puppeteer + FFmpeg)
  player/               → Embeddable <hyperframes-player> web component
  producer/             → Full rendering pipeline (capture + encode + audio mix)
  shader-transitions/   → WebGL shader transitions for compositions
  studio/               → Browser-based composition editor UI
registry/
  blocks/               → Installable sub-composition scenes (50+)
  components/           → Installable effects and snippets
  examples/             → Starter project templates
docs/                   → Mintlify documentation site (hyperframes.heygen.com)
skills/                 → AI agent skill definitions

Key Conventions

Package manager: bun (not pnpm, not npm for workspace operations)
Commit format: Conventional commits (feat:, fix:, docs:, refactor:, test:)
TypeScript: Avoid any and as T assertions. Prefer type guards and narrowing.
Compositions: HTML files with data-* attributes. Clips need class="clip". GSAP timelines must be paused and registered on window.__timelines.
Frame Adapters: Animation runtimes plug in via the seek-by-frame adapter pattern. GSAP is the primary adapter.
Deterministic rendering: No Date.now(), no unseeded Math.random(), no render-time network fetches.

Documentation

Docs: https://hyperframes.heygen.com/introduction
Catalog (50+ blocks): https://hyperframes.heygen.com/catalog/blocks/data-chart

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