intro pnpm-dedupe to fix non stable build with tsgo

[mabels]

Summary by CodeRabbit

• Chores
  • Improved dependency installation by adding a post-install verification and deduplication step to check and optimize installed packages, reducing redundant dependencies and helping ensure a cleaner, more consistent install state.

[coderabbitai]

Caution

Review failed

The pull request is closed.

Walkthrough

Adds a pnpm dedupe --check verification step to the base GitHub Actions workflow, executed after pnpm install to validate dependency deduplication without modifying files.

Changes

Cohort / File(s)	Summary
GitHub Actions Workflow actions/base/action.yaml	Inserts a pnpm dedupe --check step immediately after the pnpm install step to verify dependency deduplication state.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Possibly related PRs

• use npm oicd follow from gh-action #1438: Also modifies actions/base/action.yaml and the pnpm install/playwright steps; related by overlap in CI workflow edits.
• intro pnpm-dedupe to fix non stable build with tsgo #1592: Directly touches the same CI workflow file and adds a post-install pnpm dedupe --check step; likely closely related.

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly describes the main change: introducing pnpm dedupe to address build stability issues with tsgo.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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✨ Finishing touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch mabels/pnpm-dedupe

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