fix: suppress CLI noise from docstring escape sequences and third-party warnings

Convert docstrings containing LaTeX math and ASCII art to raw strings (r""")
to fix SyntaxWarning: invalid escape sequence warnings during test collection.
Add pytest filterwarnings for JAX CUDA plugin and deprecation warnings.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: 2 people

pyproject.toml

@@ -51,4 +51,8 @@ test = ["pytest"]
 dev = ["pytest", "black"]
 
 [tool.pytest.ini_options]
-testpaths = ["test_autoconf"]
+testpaths = ["test_autoconf"]
+filterwarnings = [
+    "ignore:cuda_plugin_extension:UserWarning",
+    "ignore::DeprecationWarning:jax",
+]