ci: implement Playwright E2E test 4-shard parallel execution

[KubrickCode]

• Add matrix strategy to e2e-ui-test job (shardIndex: 1-4)
• Configure blob reporter and fullyParallel for CI in playwright.config.ts
• Add e2e-ui shard option support to justfile
• Add e2e-report-merge job to merge per-shard reports

fix #200

[gemini-code-assist]

Summary of Changes

Hello @KubrickCode, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request significantly enhances the efficiency of the Playwright end-to-end test suite within the continuous integration pipeline. By introducing a 4-shard parallel execution strategy, it aims to drastically cut down the time required for E2E tests to complete. The changes involve updating the Playwright configuration to support parallel runs and blob reporting, modifying the justfile to handle sharding, and adding a new CI job to merge the results from these concurrent test executions.

Highlights

• Parallel E2E Test Execution: Implemented 4-shard parallel execution for Playwright E2E tests in CI to significantly reduce execution time.
• CI Configuration Updates: Added a matrix strategy to the e2e-ui-test job, allowing tests to run concurrently across 4 shards.
• Playwright Configuration: Configured playwright.config.ts to enable fullyParallel mode and utilize the blob reporter specifically for CI environments, which is crucial for merging reports.
• Justfile Integration: Modified the justfile to support passing a shard option to Playwright, facilitating sharded test runs directly from the command line.
• Report Merging: Introduced an e2e-report-merge job responsible for consolidating test reports generated by all parallel shards into a single, comprehensive report.

Ignored Files

• Ignored by pattern: .github/workflows/** (1)
  • .github/workflows/test.yml

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[KubrickCode]

/gemini review

[gemini-code-assist]

Code Review

The pull request successfully implements parallel execution for Playwright E2E tests across 4 shards, as described. The changes correctly configure Playwright for CI environments, including enabling full parallelization, adjusting worker counts, and integrating the blob reporter for report merging. The justfile has also been updated to support the shard option, providing flexibility for test execution. The introduction of the isCI constant in playwright.config.ts enhances readability and maintainability by centralizing the CI environment check.

[KubrickCode]

🎉 This PR is included in version 0.10.0 🎉

The release is available on GitHub release

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