fix: correct GitHub username tagging in release changelog

[graycreate]

Summary

Fix the issue where releases were tagging @gray instead of @graycreate in the changelog.

Problem

The release workflow was falling back to git author name (Gray Zhang) when GitHub API calls failed, resulting in incorrect @gray mentions instead of @graycreate.

Solution

1. Added GH_TOKEN environment variable to ensure gh api calls authenticate properly
2. Enhanced the username resolution logic:
   • First tries author.login from GitHub API
   • Then tries committer.login as fallback
   • Finally uses a mapping table for known authors (Gray Zhang → @graycreate)
3. This ensures consistent and correct GitHub username tagging in release changelogs

Testing

• Tested gh api calls return correct username: ✅
• Added fallback mapping for Gray Zhang → @graycreate: ✅

🤖 Generated with Claude Code

[Copilot]

Pull Request Overview

This PR fixes GitHub username tagging in release changelogs by ensuring the workflow correctly resolves usernames through the GitHub API and provides fallback mappings for known authors.

• Added GH_TOKEN environment variable to authenticate GitHub API calls
• Enhanced username resolution with multiple fallback strategies including API-based lookup and hardcoded mappings
• Replaced simple git author name fallback with a more robust system that maps "Gray Zhang" to "@graycreate"

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[Copilot]

The GitHub API call for committer.login duplicates the repository and commit SHA parameters from the author lookup above. Consider extracting the API call logic into a reusable function to avoid repetition and improve maintainability.

[Copilot]

[nitpick] The hardcoded mapping includes multiple variations of the same author name. Consider whether all these variations ('gray', 'Gray') are actually needed in practice, as they may create confusion and maintenance overhead.

Suggested change

	"Gray Zhang" | "gray" | "Gray")
	# Only the canonical author name is mapped; add more if needed in the future
	"Gray Zhang")