Add shared React asset base package

[tfukaza]

Summary

• add @snap-engine/asset-base-react with shared Engine, Camera, and Background components, contexts, hooks, forwarded refs, injected-instance support, and React Strict Mode-safe cleanup
• reuse the shared Engine context from the SnapSort and SnapLine React adapters and support React 18 and React 19
• add the React demo, documentation, TypeScript mappings, lifecycle coverage, and camera interaction coverage
• publish the core cleanup needed for framework-owned DOM lifecycles as @snap-engine/core@0.4.1
• make asset tag publishing idempotent and add trusted-publisher support for the new React package

Published packages

• @snap-engine/asset-base-react@0.1.0
• @snap-engine/snapsort-react@0.1.0
• @snap-engine/core@0.4.1

Validation

• npm run lint
• npm run build
• npx tsc --noEmit -p assets/asset-base/react/tsconfig.json
• npx tsc --noEmit -p assets/snapsort/react/tsconfig.json
• npx tsc --noEmit -p assets/snapline/react/tsconfig.json
• npm run test:asset-base-react
• npm run test:camera-control-react
• npm run test:snapline-react
• package tarball inspection for both newly published packages
• clean React 19 consumer production build using both exact 0.1.0 tarballs

The full SnapSort React suite reports 52 passing, 5 skipped, and 7 failing tests. Targeted failures reproduce unchanged at the update-docs base commit, so they are not introduced by this branch.

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated (UTC)
snap-engine-js	Ready	Preview, Comment	Jul 17, 2026 6:25am