docs: site skeleton & initial placeholder content

.github/workflows/build-docs.yml

@@ -44,10 +44,13 @@ jobs:
           uv pip install \
             "myst-parser>=4.0.1" \
             "nvidia-sphinx-theme>=0.0.8" \
-            "sphinx>=8.1.3" \
-            "sphinx-autobuild>=2024.10.3" \
+            "sphinx>=8.2.3" \
+            "sphinx-autobuild>=2025.8.25" \
             "sphinx-autodoc2>=0.5.0" \
-            "sphinx-copybutton>=0.5.2"
+            "sphinx-copybutton>=0.5.2" \
+            "sphinxcontrib-mermaid>=1.0.0" \
+            "sphinx-design>=0.6.1" \
+            "swagger-plugin-for-sphinx>=6.0.0"
 
       - name: Build documentation
         run: |