chore: bump pnpm to 12.4.1

[btravers]

Bumps packageManager from pnpm 11.7.0 to 12.4.1 (major).

• Lockfile regenerated with pnpm install --lockfile-only: the only change is pnpm 12's new packageManagerDependencies document pinning pnpm's own integrity. Dependency graph unchanged.
• pnpm 12 breaking changes to watch in CI: unrecognized pnpm-workspace.yaml settings now error, --frozen-lockfile false removed (use --no-frozen-lockfile), stricter engineStrict.

https://claude.ai/code/session_01JqjTCSDPsbgreJKHcRABi9

Summary by CodeRabbit

• Documentation

  • Updated the documented prerequisite to use pnpm 12.4.1.

• Chores

  • Updated the project’s package manager version to pnpm 12.4.1.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Advanced

Run ID: 0df48f4f-92fc-49d0-8c04-3e0f5271ffd8

📥 Commits

Reviewing files that changed from the base of the PR and between fa6f44b and 00066a0.

⛔ Files ignored due to path filters (1)

• pnpm-lock.yaml is excluded by !**/pnpm-lock.yaml, !pnpm-lock.yaml

📒 Files selected for processing (2)

• CONTRIBUTING.md
• package.json

Included review availability: Your plan provides up to 1 included review per hour; 0 remain after this review.

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📝 Walkthrough

Walkthrough

The pinned pnpm version changes from 11.7.0 to 12.4.1 in project metadata and contributor instructions.

Changes

pnpm Version Alignment

Layer / File(s)	Summary
Update pnpm version package.json, CONTRIBUTING.md	The packageManager field and the Prerequisites section now specify pnpm@12.4.1. The corepack enable instruction remains unchanged.

Priority: ⬇️ Low

Estimated code review effort: 1 (Trivial) | ~5 minutes

Change: Other

Merge Risk: ⚪ Minimal · up to 00066

The pnpm upgrade is aligned across project metadata, contributor instructions, lockfile, and checked-in setup, with no merge-blocking behavior evidenced.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely describes the main change: updating pnpm from 11.7.0 to 12.4.1.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0…
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch chore/pnpm-12.4.1

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[Copilot]

🟡 Changes recommended

The updated pnpm-lock.yaml appears to contain two YAML documents (mid-file ---), which is likely to break pnpm’s lockfile parsing in CI.

Get a fresh assessment by requesting another Copilot review.

Pull request overview

This PR updates the repo’s pinned package manager from pnpm 11.7.0 to pnpm 12.4.1 (via packageManager) and refreshes contributor docs accordingly, with an accompanying lockfile update intended to reflect pnpm 12’s new metadata.

Changes:

• Bump packageManager in package.json to pnpm@12.4.1.
• Update CONTRIBUTING prerequisites to reference pnpm 12.4.1.
• Update pnpm-lock.yaml to include pnpm 12 packageManagerDependencies metadata (but the current lockfile structure appears invalid).

File summaries

File	Description
pnpm-lock.yaml	Regenerated lockfile to include pnpm 12 metadata; currently contains an extra YAML document marker that likely breaks parsing.
package.json	Updates packageManager to pnpm@12.4.1.
CONTRIBUTING.md	Updates the documented pnpm prerequisite to 12.4.1.

Review details

Files not reviewed (1)

• pnpm-lock.yaml: Generated file

• Files reviewed: 2/3 changed files
• Comments generated: 1
• Review effort level: Lite

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