Use sphinx-pyproject to remove duplication

Author: adamtheturtle

docs/source/conf.py

@@ -4,11 +4,19 @@
 """
 
 import importlib.metadata
+from pathlib import Path
 
 from packaging.specifiers import SpecifierSet
+from sphinx_pyproject import SphinxConfig
 
-project = "VWS-Auth-Tools"
-author = "Adam Dangoor"
+_pyproject_file = Path(__file__).parent.parent.parent / "pyproject.toml"
+_pyproject_config = SphinxConfig(
+    pyproject_file=_pyproject_file,
+    config_overrides={"version": None},
+)
+
+project = _pyproject_config.name
+author = _pyproject_config.author
 
 extensions = [
     "sphinx_copybutton",

pyproject.toml

@@ -64,6 +64,7 @@ optional-dependencies.dev = [
     "sphinx==8.2.0",
     "sphinx-copybutton==0.5.2",
     "sphinx-lint==1.0.0",
+    "sphinx-pyproject==0.3.0",
     "sphinx-substitution-extensions==2025.2.19",
     "sphinxcontrib-spelling==8.0.1",
     "sybil==9.1.0",