ci: add codex label step

[tcheeric]

Why now?

Automatically label workflow-created issues with codex.
Related issue: #0

What changed?

• add github-script step to apply codex label when workflow runs as GitHub Actions bot

BREAKING

• n/a

Review focus

• workflow logic

Checklist

• Scope ≤ 300 lines (or split/stack)
• Title is verb + object (e.g., “Refactor auth middleware to async”)
• Description links the issue and answers “why now?”
• BREAKING flagged if needed
• Tests/docs updated (if relevant)

---

https://chatgpt.com/codex/tasks/task_b_68a723e2c99883318087e8358a49dabf

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[Copilot]

Pull Request Overview

This PR adds automatic labeling functionality to the GitHub issue labeler workflow to apply a "codex" label when the workflow is triggered by the GitHub Actions bot.

• Adds conditional step that applies "codex" label when github.actor is github-actions[bot]

[Copilot]

The condition should use ${{ }} syntax for GitHub Actions expressions. Change to if: ${{ github.actor == 'github-actions[bot]' }}

Suggested change

	- if: github.actor == 'github-actions[bot]'
	- if: ${{ github.actor == 'github-actions[bot]' }}

[Copilot]

Consider pinning the action to a specific commit hash instead of using a tag version for better security and reproducibility. For example: uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea # v7.0.1

Suggested change

	uses: actions/github-script@v7
	uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea # v7.0.1