chore(build): add clean target to justfile

- Add clean target to remove temporary files and build artifacts
- Removes coverage reports, pytest cache, mkdocs site, and Python bytecode
- Improves developer workflow by providing easy cleanup command

Author: oliverandrich

CHANGELOG.md

@@ -2,6 +2,9 @@
 
 ## Unreleased
 
+### 🛠️ Developer Experience
+- **Cleanup command**: Added `just clean` target to remove temporary files and build artifacts
+
 ## 4.4.2 (2025-09-23)
 
 ### 🐛 Bug Fixes

justfile

@@ -42,3 +42,19 @@ VENV_DIRNAME := ".venv"
 # serve docs during development
 @serve-docs: check_uv
     uvx  --with markdown-callouts --with mkdocs-material mkdocs serve
+
+# clean up temporary files and directories
+@clean:
+    echo "Cleaning up temporary files and directories..."
+    rm -rf htmlcov/
+    rm -rf .coverage
+    rm -rf .pytest_cache/
+    rm -rf site/
+    rm -rf dist/
+    rm -rf build/
+    rm -rf .tox/
+    rm -rf src/*.egg-info
+    find . -type d -name __pycache__ -exec rm -rf {} + 2>/dev/null || true
+    find . -type f -name "*.pyc" -delete 2>/dev/null || true
+    find . -type f -name "*.pyo" -delete 2>/dev/null || true
+    echo "Clean up complete!"