Add Claude Code GitHub Workflow

[nielspeter]

🤖 Installing Claude Code GitHub App

This PR adds a GitHub Actions workflow that enables Claude Code integration in our repository.

What is Claude Code?

Claude Code is an AI coding agent that can help with:

• Bug fixes and improvements
• Documentation updates
• Implementing new features
• Code reviews and suggestions
• Writing tests
• And more!

How it works

Once this PR is merged, we'll be able to interact with Claude by mentioning @claude in a pull request or issue comment.
Once the workflow is triggered, Claude will analyze the comment and surrounding context, and execute on the request in a GitHub action.

Important Notes

• This workflow won't take effect until this PR is merged
• @claude mentions won't work until after the merge is complete
• The workflow runs automatically whenever Claude is mentioned in PR or issue comments
• Claude gets access to the entire PR or issue context including files, diffs, and previous comments

Security

• Our Anthropic API key is securely stored as a GitHub Actions secret
• Only users with write access to the repository can trigger the workflow
• All Claude runs are stored in the GitHub Actions run history
• Claude's default tools are limited to reading/writing files and interacting with our repo by creating comments, branches, and commits.
• We can add more allowed tools by adding them to the workflow file like:

allowed_tools: Bash(npm install),Bash(npm run build),Bash(npm run lint),Bash(npm run test)

There's more information in the Claude Code action repo.

After merging this PR, let's try mentioning @claude in a comment on any PR to get started!

[claude]

This is a solid GitHub Actions implementation for Claude Code integration!

Strengths:

• Clean workflow separation (automated reviews vs interactive responses)
• Proper security with scoped permissions and secure token usage
• Well-documented YAML with helpful optional configurations
• Good conditional execution to prevent unnecessary runs

Suggestions:

1. Add resource limits (timeout-minutes: 10) to prevent runaway workflows
2. Include error handling steps for failed Claude responses
3. Consider concurrency controls to prevent overlapping runs
4. Add documentation explaining CLAUDE_CODE_OAUTH_TOKEN setup and @claude usage

Security: ✅

• Minimal required permissions
• No hardcoded secrets
• Proper token management

Performance: ✅

• Efficient fetch-depth: 1
• Smart conditional triggers

The workflows align well with the repository's "Safety First" principles and agent orchestration focus. Recommendation: APPROVE - this will be valuable automation for the team!