Add docstrings

pyproject.toml

@@ -26,6 +26,7 @@ dev = [
     "pytest>=8.4.2",
     "pytest-asyncio>=1.2.0",
     "pytest-sugar>=1.1.1",
+    "ruff>=0.13.2",
 ]
 
 [tool.basedpyright]
@@ -36,3 +37,10 @@ reportUnreachable = false
 [tool.pytest.ini_options]
 asyncio_mode = "auto"
 asyncio_default_fixture_loop_scope = "function"
+
+[tool.ruff]
+extend-exclude = ["tests"]
+
+[tool.ruff.lint]
+extend-select = ["I", "D", "ERA", "UP"]
+ignore = ["D203", "D213"]