feat(demo): use Tailwind v4 on all templates

[bukinoshita]

• feat(demo): use Tailwind v4 in aws-verify-email.tsx #2489
• feat(demo): use Tailwind v4 in linear-login-code.tsx #2490
• feat(demo): use Tailwind v4 in notion-magic-link.tsx #2488
• feat(demo): use Tailwind v4 in plaid-verify-identity.tsx #2491
• feat(demo): use Tailwind v4 in raycast-magic-link.tsx #2524
• feat(demo): use Tailwind v4 in slack-confirm.tsx #2492
• feat(demo): use Tailwind v4 in codepen-challengers.tsx #2493
• feat(demo): use Tailwind v4 in google-play-policy-update.tsx #2495
• feat(demo): use Tailwind v4 in stack-overflow-tips.tsx #2494
• feat(demo): use Tailwind v4 in github-access-token.tsx #2496
• feat(demo): use Tailwind v4 in yelp-recent-login.tsx #2497
• feat(demo): use Tailwind v4 in apple-receipt.tsx #2501
• feat(demo): use Tailwind v4 in nike-receipt.tsx #2500
• feat(demo): use Tailwind v4 in dropbox-reset-password.tsx #2505
• feat(demo): use Tailwind v4 in twitch-reset-password.tsx #2504
• feat(demo): use Tailwind v4 in airbnb-review.tsx #2503
• feat(demo): use Tailwind v4 in amazon-review.tsx #2502
• feat(demo): use Tailwind v4 in koala-welcome.tsx #2530
• feat(demo): use Tailwind v4 in stripe-welcome.tsx #2531

---

Summary by cubic

Switched the demo app to the Tailwind-enabled @react-email/[email protected] to set up basic Tailwind v4 styling. This replaces the workspace dependency for consistent builds.

[changeset-bot]

⚠️ No Changeset found

Latest commit: 3db6eb4

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

This PR includes no changesets

When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types

Click here to learn what changesets are, and how to add one.

Click here if you're a maintainer who wants to add a changeset to this PR

[vercel]

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

Project	Deployment	Preview	Comments	Updated (UTC)
react-email	Canceled			Oct 15, 2025 3:24pm
react-email-demo	Ready	Preview	Comment	Oct 15, 2025 3:24pm

[socket-security]

All alerts resolved. Learn more about Socket for GitHub.

This PR previously contained dependency changes with security issues that have been resolved, removed, or ignored.

View full report

[alwaysmeticulous]

🤖 Meticulous was unable to start a test run because no sessions have been recorded yet. Click here to setup session recording.

_{Last updated for commit 147568d. This comment will update as new commits are pushed.}