PR Checklist

No linked issue.

What is the new behavior?

Playwright now starts the Sanity Presentation E2E preview and Studio servers directly with package-local pnpm --dir ... exec ... commands, passing server-specific values through Playwright's structured env option. This removes the nested turbo run serve persistent-task layer from Playwright's webServer lifecycle so Playwright can tear down the servers it starts.

The CI workflow no longer manually kills ports 4200 and 3333 between Presentation E2E runs because the servers are now owned and cleaned up by Playwright.

Does this PR introduce a breaking change?

• Yes
• No

Other information

Validated with:

pnpm turbo run lint --filter=sanity-presentation-e2e
pnpm --dir apps/sanity-presentation-e2e exec playwright test --config playwright.config.ts --list
SANITY_E2E_CDP_ENDPOINT= SANITY_E2E_BROWSER_CHANNEL= pnpm turbo run e2e-studio --filter=sanity-presentation-e2e

After the hermetic Studio E2E run finished, ports 4200 and 3333 were no longer listening.

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