Add Claude Code GitHub Workflow

[vlados]

🤖 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!

Summary by CodeRabbit

• Chores
  • Introduced automated AI-assisted code reviews on pull requests to strengthen code quality, performance, security, and test coverage.
  • Enabled on-demand AI assistance for PRs and issues via mention, accelerating reviews and triage.
  • These changes affect internal development workflows only; there are no changes to product behavior, user experience, or public APIs.

[coderabbitai]

Caution

Review failed

The pull request is closed.

Walkthrough

Adds two GitHub Actions workflows integrating anthropics/claude-code-action@v1: one auto-runs on pull_request events to generate code reviews; another runs when @claude is mentioned or detected on PR/issue events. Both check out the repo and use a secret OAuth token to invoke the action with optional prompt/args.

Changes

Cohort / File(s)	Change summary
Claude automation workflows \.github/workflows/claude-code-review.yml, \.github/workflows/claude.yml	Introduces two workflows: (1) automated PR code review on opened/synchronize events with a predefined prompt and CLI permissions; (2) on-demand runs triggered by @claude mentions on PRs/issues, with conditional execution and documented optional params.

Sequence Diagram(s)

sequenceDiagram
  autonumber
  actor Dev as Developer
  participant GH as GitHub (PR Events)
  participant GHA as Actions Runner
  participant CC as anthropics/claude-code-action@v1
  participant API as GitHub API

  Dev->>GH: Open/Sync Pull Request
  GH-->>GHA: trigger workflow (claude-code-review.yml)
  GHA->>GHA: checkout repo
  GHA->>CC: run action with CLAUDE_CODE_OAUTH_TOKEN and prompt
  CC->>API: Read PR diff/files, metadata
  CC->>API: Post review/comment via gh pr comment
  API-->>Dev: Review visible on PR

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sequenceDiagram
  autonumber
  actor User as User
  participant GH as GitHub (Issues/PRs)
  participant GHA as Actions Runner
  participant CC as anthropics/claude-code-action@v1
  participant API as GitHub API

  User->>GH: Create/Comment mentioning @claude
  GH-->>GHA: trigger workflow (claude.yml) if mention detected
  GHA->>GHA: checkout repo (fetch-depth: 1)
  GHA->>CC: run action with claude_code_oauth_token
  CC->>API: Read context (issue/PR), optional args
  CC->>API: Post response/comment
  API-->>User: Comment from Claude visible

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Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

✨ Finishing touches

🧪 Generate unit tests

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch add-claude-github-actions-1759346617443

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📜 Recent review details

Configuration used: CodeRabbit UI

Review profile: CHILL

Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between e47c8fe and ca9cf7c.

📒 Files selected for processing (2)

• .github/workflows/claude-code-review.yml (1 hunks)
• .github/workflows/claude.yml (1 hunks)

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