feat: use custom JS script for PR labeling

[utkarsh232005]

Replaces actions/labeler with a custom JavaScript bot script to handle pull request labeling natively via the GitHub API.

Summary by CodeRabbit

• Chores
  • Updated pull request labeling workflow to use a custom labeler implementation.

[coderabbitai]

Caution

Review failed

Pull request was closed or merged during review

📝 Walkthrough

Walkthrough

The GitHub Actions workflow for PR labeling transitions from the standard actions/labeler action to a custom script-based approach. The workflow checks out the repository and executes ./.github/scripts/pr-labeler.js via actions/github-script@v7, with updated safety documentation for the pull_request_target trigger.

Changes

Labeler workflow automation update

Layer / File(s)	Summary
Workflow labeler script migration .github/workflows/labeler.yml	The label job replaces the actions/labeler action with a checkout step followed by a actions/github-script@v7 step that executes the custom ./.github/scripts/pr-labeler.js script. The pull_request_target safety comment is updated to document the API-only, minimal-permissions approach.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Possibly related PRs

• KDM-cli/kdm-cli#31: Introduces the initial PR labeling workflow; this PR evolves it to use a custom script rather than the standard actions/labeler action.

Poem

🏷️ From templated steps to custom script we go,
Where GitHub flows through minimal permissions' glow.
Checkout and label, a dance precise—
Automation crafted with security's spice. ✨

🚥 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 accurately describes the main change: replacing the GitHub Actions labeler with a custom JavaScript script for PR labeling.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
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.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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_{Comment @coderabbitai help to get the list of available commands and usage tips.}

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