Run Playwright E2E tests in CI

[kumaradityaraj]

Closes Run Playwright E2E tests in CI

This PR sets up Playwright to run in CI.

[Copilot]

Pull request overview

This PR introduces a new Playwright-based E2E test package and adds a GitHub Actions workflow to run those E2E tests on pull requests, exercising the diagram editor UI via Storybook.

Changes:

• Added a new @serverlessworkflow/playwright workspace package containing Playwright config and an initial diagram-editor E2E test.
• Added a GitHub Actions workflow to install dependencies/browsers and run the Playwright suite in CI.
• Updated repo ignores and lockfile to accommodate Playwright outputs and dependencies.

Reviewed changes

Copilot reviewed 6 out of 8 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
pnpm-lock.yaml	Adds Playwright-related dependencies to the lockfile.
packages/playwright/package.json	Defines the new Playwright workspace package and test scripts.
packages/playwright/playwright.config.ts	Configures Playwright baseURL and webServer (Storybook) startup.
packages/playwright/tests/diagram-editor.spec.ts	Adds an initial E2E test validating diagram editor rendering in Storybook.
packages/playwright/tsconfig.json	Adds TS config for the Playwright package.
packages/playwright/README.md	Documents how to run the Playwright tests locally via pnpm filters.
.gitignore	Ignores Playwright output directories (reports/results).
.github/workflows/playwright.yaml	Adds CI workflow to run Playwright E2E tests and upload reports.

Files not reviewed (1)

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[Copilot]

Pull request overview

Copilot reviewed 6 out of 8 changed files in this pull request and generated 4 comments.

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[Copilot]

Pull request overview

Copilot reviewed 6 out of 8 changed files in this pull request and generated 2 comments.

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[Copilot]

Pull request overview

Copilot reviewed 6 out of 8 changed files in this pull request and generated 4 comments.

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[Copilot]

Pull request overview

Copilot reviewed 6 out of 8 changed files in this pull request and generated 3 comments.

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[Copilot]

Pull request overview

Copilot reviewed 6 out of 9 changed files in this pull request and generated 2 comments.

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[Copilot]

Pull request overview

Copilot reviewed 6 out of 9 changed files in this pull request and generated no new comments.

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[Copilot]

Pull request overview

Copilot reviewed 6 out of 8 changed files in this pull request and generated 4 comments.

Files not reviewed (1)

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[kumaradityaraj]

Closing this task since its already implemented in CI.