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https://github.com/neomjs/neo/blob/dev/CONTRIBUTING.md

Fixes #7436 What kind of change does this PR introduce? (check at least one)

• Bugfix
• Feature
• Code style update
• Refactor
• Build-related changes
• Other, please describe:

Does this PR introduce a breaking change? (check one)

• Yes
• No

If yes, please describe the impact and migration path for existing applications:

The PR fulfills these requirements:

• It's submitted to the dev branch, not the main branch
• When resolving a specific issue, it's referenced in the PR's title (e.g. fix #xxx[,#xxx], where "xxx" is the issue number)

If adding a new feature, the PR's description includes:

• A convincing reason for adding this feature (to avoid wasting your time, it's best to open a suggestion issue first and wait for approval before working on it)

Summary

• add test/playwright/playwright.config.component.mjs with the dedicated component-test configuration (testDir: './component', fullyParallel: false, workers: 1, and webServer invoking npm run server-start) to satisfy the foundational harness ticket.
• default to the Chromium desktop device profile and reuse the existing dev server when not running in CI (test/playwright/playwright.config.component.mjs:1).