fix: remove unused yaml dependency

[chenjiahan]

Summary

Remove the unused yaml dependency.

[Copilot]

Pull request overview

This PR removes the yaml package dependency which is not used anywhere in the codebase. The removal helps reduce the package size and dependency footprint.

• Removes yaml dependency from package.json
• Updates pnpm-lock.yaml to reflect the removed dependency

Reviewed changes

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

File	Description
package.json	Removes the unused yaml dependency from the dependencies section
pnpm-lock.yaml	Removes all references to the yaml package including its resolution metadata and snapshot entries

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I've completed my review of this pull request. After thoroughly searching the codebase, I can confirm that:

1. There are no imports or requires of the yaml package in the source code
2. There is no YAML file parsing functionality in the codebase
3. The project only uses json5 for JSON parsing (seen in src/utils.ts)
4. The changes correctly remove the dependency from both package.json and pnpm-lock.yaml

The PR is clean and accomplishes its stated goal of removing an unused dependency. No issues were found.

Files not reviewed (1)

• pnpm-lock.yaml: Language not supported

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