add claude and gitignore

{{cookiecutter.project_slug}}/.gitignore

@@ -0,0 +1,56 @@
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+dist/
+*.egg-info/
+.eggs/
+*.egg
+pip-wheel-metadata/
+
+# Virtual environments
+.venv/
+venv/
+env/
+ENV/
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+.pytest_cache/
+.coverage
+.coverage.*
+htmlcov/
+coverage.xml
+
+# Type checkers / linters
+.mypy_cache/
+.pyre/
+.pytype/
+.ruff_cache/
+*_cache/
+
+# Jupyter Notebook
+.ipynb_checkpoints/
+
+# pyenv
+.python-version
+
+# IDEs and editors
+.vscode/
+.idea/
+*.swp
+*.swo
+
+# OS files
+.DS_Store
+Thumbs.db