chore: add yaml dependency (GIT-88)

[TonyCasey]

Summary

• Add yaml npm package (v2.8.2) for YAML parsing/stringifying
• Foundation for config migration from .git-mem.json to .git-mem/.git-mem.yaml

Closes GIT-88

Test plan

• npm install succeeds
• npm run pre-commit passes (type-check + lint)
• All 433 unit tests pass

🤖 Generated with Claude Code

Summary by CodeRabbit

• Chores
  • Updated project dependencies to enhance functionality and compatibility.

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[coderabbitai]

📝 Walkthrough

Walkthrough

A YAML parsing library dependency (yaml v^2.8.2) is added to the project's package dependencies.

Changes

Cohort / File(s)	Summary
Dependency Addition package.json	Added yaml dependency (version ^2.8.2) to the dependencies section.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

🚥 Pre-merge checks | ✅ 4

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title 'chore: add yaml dependency (GIT-88)' directly and accurately describes the main change—adding the yaml dependency to package.json.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Merge Conflict Detection	✅ Passed	✅ No merge conflicts detected when merging into main

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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 git-88

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No actionable comments were generated in the recent review. 🎉

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[Copilot]

Pull request overview

This PR adds the yaml npm package (v2.8.2) as a foundation for migrating hook configuration from .git-mem.json to .git-mem/.git-mem.yaml. The change includes only the dependency addition without any implementation code, following a staged development approach.

Changes:

• Added yaml package (v2.8.2) to production dependencies in package.json
• Updated package-lock.json with the yaml package resolution and metadata

Reviewed changes

Copilot reviewed 1 out of 2 changed files in this pull request and generated no comments.

File	Description
package.json	Added yaml ^2.8.2 to dependencies
package-lock.json	Added yaml package resolution with version 2.8.2, integrity hash, and metadata

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