chore(samples): migrate headless-ssr-search-nextjs from Cypress to Playwright

[alexprudhomme]

KIT-5653

Problem

The samples/headless-ssr/search-nextjs sample uses Cypress for E2E testing with complex SSR/CSR rendering tests, search parameter management tests, and web vitals monitoring. As part of the Cypress removal effort (KIT-5486), it needs to be migrated to Playwright.

Solution

• Removed Cypress config and test files (cypress.config.ts, cypress/ directory)
• Replaced cypress, cypress-repeat, and cypress-web-vitals dependencies with @playwright/test
• Updated e2e and e2e:watch scripts to use Playwright
• Created playwright.config.ts with multi-browser support, baseURL, and dev server auto-start
• Migrated tests to Playwright:
  • tests/utils.ts — shared helpers (waitForHydration, getResultTitles, selectors)
  • tests/smoke.spec.ts — SSR rendering validation, CSR hydration, timestamp comparison, console error monitoring, search functionality (web vitals tests dropped as no direct Playwright equivalent)
  • tests/ssr-search-parameter-manager.spec.ts — URL parameter management, back navigation, SSR with initial params, invalid params handling
• SSR HTML parsing uses string matching instead of DOMParser (not available in Node.js)
• Updated .gitignore with Playwright-specific entries

[changeset-bot]

⚠️ No Changeset found

Latest commit: bf93334

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

[svcsnykcoveo]

✅ Snyk checks have passed. No issues have been found so far.

Status	Scan Engine	Critical	High	Medium	Low	Total (0)
✅	Open Source Security	0	0	0	0	0 issues
✅	Licenses	0	0	0	0	0 issues
✅	Code Security	0	0	0	0	0 issues

💻 Catch issues earlier using the plugins for VS Code, JetBrains IDEs, Visual Studio, and Eclipse.

[chromatic-com]

Tip

All tests passed and all changes approved!

🟢 UI Tests: 356 tests unchanged
🟢 UI Review: 356 stories published -- no changes
Storybook Publish: 356 stories published

[pkg-pr-new]

• coveo-atomic-pkg-new-template

@coveo/atomic

npm i https://pkg.pr.new/@coveo/atomic@7475

@coveo/atomic-hosted-page

npm i https://pkg.pr.new/@coveo/atomic-hosted-page@7475

@coveo/atomic-legacy

npm i https://pkg.pr.new/@coveo/atomic-legacy@7475

@coveo/atomic-react

npm i https://pkg.pr.new/@coveo/atomic-react@7475

@coveo/auth

npm i https://pkg.pr.new/@coveo/auth@7475

@coveo/bueno

npm i https://pkg.pr.new/@coveo/bueno@7475

@coveo/create-atomic

npm i https://pkg.pr.new/@coveo/create-atomic@7475

@coveo/create-atomic-component

npm i https://pkg.pr.new/@coveo/create-atomic-component@7475

@coveo/create-atomic-component-project

npm i https://pkg.pr.new/@coveo/create-atomic-component-project@7475

@coveo/create-atomic-result-component

npm i https://pkg.pr.new/@coveo/create-atomic-result-component@7475

@coveo/create-atomic-rollup-plugin

npm i https://pkg.pr.new/@coveo/create-atomic-rollup-plugin@7475

@coveo/headless

npm i https://pkg.pr.new/@coveo/headless@7475

@coveo/headless-react

npm i https://pkg.pr.new/@coveo/headless-react@7475

@coveo/shopify

npm i https://pkg.pr.new/@coveo/shopify@7475

commit: bf93334

[github-actions]

🔗 Scratch Orgs ready to test this PR:

• ✅ LWS Enabled: Open Org
• ✅ LWS Disabled: Open Org