feat: Add Claude Code automated PR review workflow (#1074)

* feat: add Claude Code automated PR review workflow

- Add GitHub Actions workflow for automated PR reviews using Claude Code
- Configure workflow to analyze code quality, security, performance, and testing
- Update CONTRIBUTING.md to document automated review process
- Workflow posts review comments and flags critical issues

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

* refactor: simplify Claude Code review prompt and add changeset

- Streamline review prompt to bare minimum
- Add changeset for workflow addition

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

* style: format files with prettier

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

* refactor: simplify Claude Code workflow using official action

- Use anthropics/claude-code-action@beta instead of custom CLI setup
- Remove complex diff handling and comment posting logic
- Simplify to minimal configuration with direct prompt
- Reduce timeout to 10 minutes for faster feedback

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

* fix: use Claude API directly instead of GitHub App

- Replace anthropics/claude-code-action with direct API calls
- Use curl to call Claude API with existing ANTHROPIC_API_KEY secret
- Removes dependency on GitHub App installation
- Simpler implementation using Claude 3.5 Sonnet model

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

* revert: back to official claude-code-action for GitHub App usage

- Revert to anthropics/claude-code-action@beta
- Requires Claude Code GitHub App installation at https://github.com/apps/claude
- Cleaner implementation using official action
- Maintains API key authentication

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

---------

Co-authored-by: Claude <noreply@anthropic.com>

Author: maxprilutskiy

.changeset/9fcc6929312e2664.md

@@ -0,0 +1,4 @@
+---
+---
+
+Add Claude Code automated PR review workflow

.github/workflows/claude-code-review.yml

@@ -0,0 +1,28 @@
+name: Claude Code PR Review
+
+on:
+  pull_request:
+    types: [opened, synchronize]
+    branches:
+      - main
+
+jobs:
+  claude-review:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      pull-requests: write
+      id-token: write
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Automatic PR Review
+        uses: anthropics/claude-code-action@beta
+        with:
+          anthropic_api_key: ${{ secrets.CLAUDE_CODE_ANTHROPIC_API_KEY }}
+          timeout_minutes: "10"
+          direct_prompt: |
+            Review this PR. Focus on code quality, security, and potential issues. Provide specific feedback with file references.

CONTRIBUTING.md

@@ -159,6 +159,18 @@ We love your Pull Requests! A couple of things to keep in mind before you submit
 - Please discuss implementation approach beforehand to avoid having PRs rejected
 - Please actively discuss with the Lingo.dev team in the PR and related Issue(s)
 
+#### Automated Code Review
+
+We use Claude Code to provide automated code reviews on all pull requests. This helps ensure:
+
+- Code quality and maintainability
+- Security best practices
+- Performance considerations
+- Proper test coverage
+- Documentation completeness
+
+The automated review will post comments on your PR with suggestions and feedback. While these are helpful guidelines, human reviewers will make the final decisions. If Claude Code identifies critical security issues, please address them promptly.
+
 ---
 
 Thank you!