feat: Add Claude Assistant GitHub Action workflow

.github/workflows/claude-code.yml

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+name: Claude Assistant
+
+on:
+  issue_comment:
+    types: [created]
+  pull_request_review_comment:
+    types: [created]
+  issues:
+    types: [opened, assigned]
+  pull_request_review:
+    types: [submitted]
+
+jobs:
+  claude-response:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: anthropics/claude-code-action@beta
+        with:
+          anthropic_api_key: ${{ secrets.ANTHROPIC_API_KEY }}
+          github_token: ${{ secrets.GH_REPO_PAT }}
+          # Optional: add custom trigger phrase (default: @claude)
+          # trigger_phrase: "/claude"
+          # Optional: add assignee trigger for issues
+          # assignee_trigger: "claude"

CLAUDE.md

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+# Claude Guidelines for gentrace-python
+
+## Project Overview
+gentrace-python is a Python SDK for the Gentrace API, which provides tools for evaluating and monitoring AI applications.
+
+## Code Style Guidelines
+- Follow PEP 8 style guidelines
+- Use type hints where appropriate
+- Maintain consistent indentation (4 spaces)
+- Use meaningful variable and function names
+- Add docstrings for public APIs
+- Follow the existing error handling patterns
+
+## Testing Requirements
+- Write unit tests for new functionality using pytest
+- Ensure all tests pass before submitting PRs
+- Maintain or improve test coverage
+
+## PR Guidelines
+- Keep PRs focused on a single feature or bug fix
+- Include clear descriptions of changes
+- Reference related issues
+- Update documentation as needed
+
+## Commit Message Format
+- Use clear, descriptive commit messages
+- Start with a verb in the present tense (e.g., "Add", "Fix", "Update")
+- Reference issue numbers when applicable
+
+## Dependencies
+- Minimize adding new dependencies
+- Prefer well-maintained, widely-used packages
+- Consider compatibility with different Python versions
+
+## Security Considerations
+- Never expose API keys or sensitive information
+- Follow secure coding practices
+- Validate user inputs
+
+## Documentation
+- Update README.md for significant changes
+- Document new features and APIs
+- Keep code comments up-to-date
+
+## Performance
+- Consider performance implications of changes
+- Avoid unnecessary computations or memory usage
+