refactor(ci): extract common CI setup to composite action

[KubrickCode]

• Extract Node.js, pnpm, just setup to .github/actions/setup-env
• Remove duplicated setup steps from test, e2e-ui-test, e2e-report-merge jobs
• Add optional turbo cache with configurable suffix

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 refactors the Continuous Integration (CI) workflow by extracting common environment setup steps into a reusable composite GitHub Action. This change aims to reduce redundancy across different CI jobs, such as test and e2e runs, by providing a single, centralized point for configuring Node.js, pnpm, and just. Additionally, it integrates an optional and configurable Turbo cache to enhance build efficiency.

Highlights

• New Composite Action: A new composite GitHub Action, .github/actions/setup-env/action.yml, has been introduced to centralize common CI environment setup.
• Centralized Environment Setup: This action encapsulates the setup for Node.js (v22.18.0), pnpm (v9.15.0), and the just command runner, aiming to remove duplication across various CI jobs.
• Optional Turbo Cache: The new composite action includes an optional Turbo cache mechanism, configurable via enable-turbo-cache and cache-suffix inputs, to improve CI performance.

Ignored Files

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

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[KubrickCode]

/gemini review

[gemini-code-assist]

Code Review

This pull request is a great refactoring that extracts common CI setup steps into a reusable composite action, improving maintainability. The new action correctly sets up Node.js, pnpm, and just, and includes an optional step for caching with Turborepo. My review includes a critical fix for an invalid action version that would cause CI failures, along with some medium-severity suggestions to enhance the stability and maintainability of the new action by pinning action versions and managing the Node.js version more effectively.