Prepare Release - #3590

This PR is a preview of the release that release-plan has prepared. To release you should just merge this PR 👍

Release (2026-11-11)

• react-shepherd 8.0.0 (major)
• shepherd.js 16.0.0 (major)

💥 Breaking Change

• react-shepherd
  • #3591 Build react-shepherd with tsdown (@RobbieTheWagner)
• react-shepherd, shepherd.js
  • #3583 Drop all dependencies: an in-house positioning engine, 37% smaller, and docs for agents (@RobbieTheWagner)

🐛 Bug Fix

• shepherd.js
  • #3593 Fix pinch-zoom overlay coverage, touch scrolling in steps, and invisible dialog focus (@RobbieTheWagner)
  • #3573 fix: resolve tour lifecycle races in beforeShowPromise, start, and confirmCancel (@RobbieTheWagner)
  • #3558 fix(modal): stop the iframe offset walk at the window the overlay renders into (@chuckcarpenter)
  • #3557 fix(modal): treat overflow: hidden as cropping, skip inline and display: contents ancestors (@chuckcarpenter)
  • #3556 fix(modal): don't clip highlights by root elements whose overflow applies to the viewport (@chuckcarpenter)
  • #3441 Fix mobile input focus loss during tooltip repositioning (@serendipitous-syntax)

🏠 Internal

• shepherd.js
  • #3592 Bump cypress-plugin-tab to 2.0.0 (@RobbieTheWagner)
• react-shepherd, shepherd.js
  • #3589 Build with tsdown and drop Floating UI from tests (@RobbieTheWagner)
  • #3584 chore: update dependencies and fix audit findings (@RobbieTheWagner)
• Other
  • #3572 Prepare Release (@github-actions[bot])
  • #3574 chore: add launch config for the landing dev server (@RobbieTheWagner)
  • #3498 Prepare Release (@github-actions[bot])
  • #3500 feat: add agent-friendly 404 page and llms.txt (@RobbieTheWagner)
  • #3554 fix(landing): pin Polar API version to 2026-10 on checkout (@chuckcarpenter)
  • #3499 feat: add about, contact, and privacy pages (@RobbieTheWagner)
  • #3514 Upgrade Astro to v7 and update related dependencies (@RobbieTheWagner)
  • #3493 feat: serve markdown from the homepage via Accept negotiation (@RobbieTheWagner)
  • #3492 feat: complete landing metadata with www canonical, Open Graph, and JSON-LD (@RobbieTheWagner)
  • #3491 test: add vitest harness for the landing site (@RobbieTheWagner)

Committers: 4

• Chuck Carpenter (@chuckcarpenter)
• GitHub Actions [Bot] (@github-actions)
• Robbie Wagner (@RobbieTheWagner)
• serendipitous_syntax (@serendipitous-syntax)