Add Claude instructions to prevent attribution in commit messages

CLAUDE.md

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+# Claude Instructions
+
+## Commit Messages
+- NEVER add Claude attributions like "🤖 Generated with Claude Code" to commit messages
+- Keep commit messages focused on the actual changes and their purpose
+- Use conventional commit format when appropriate
+- Be concise but descriptive about what was changed and why
+
+## Code Style
+- Follow existing code conventions in the project
+- Use appropriate linting tools (black, ruff, etc.) when available
+- Maintain consistent naming and formatting
+
+## Testing
+- Run existing tests before committing when available
+- Write tests for new functionality when appropriate
+- Verify changes work as expected
+
+## Documentation
+- Update relevant documentation when making significant changes
+- Keep README files current with new features or setup changes
+- Document any new environment variables or configuration options