Stabilize documentation full-page captures

[damianociarla]

Summary

• remove scroll-triggered compositing from landing-page content while preserving hero and interaction motion
• add a real Chromium full-page capture regression to CI and trusted publishing
• compile a TypeScript consumer against the tarball produced by npm pack
• prepare patch release 1.1.1

Validation

• Node 24 npm run check
• Node 24 npm run test:integration with FFmpeg 9.0.1
• npm audit --omit=dev
• full-page Chromium capture inspected with every landmark present exactly once