docs: raise the mkdocs-material floor to 9.7.0, add mkdocs-redirects

mkdocs.yml has enabled `navigation.path` (the breadcrumb trail) since the
docs landed, but it is a mkdocs-material 9.7.0 feature: the current
`>=9.5.45` floor lets a fresh resolve land on a 9.5/9.6 release that
silently drops it. Raise the floor to what the config actually needs.

There is currently no redirect machinery in these docs at all, so any page
rename 404s every existing inbound link, including the ones in the
published llms.txt. Add mkdocs-redirects so renames can carry a redirect
map. It is inert until a `redirect_maps` is configured; nothing in this
branch renames a page.

Author: maxisbey

pyproject.toml

@@ -80,7 +80,8 @@ docs = [
     "mkdocs-gen-files>=0.5.0",
     "mkdocs-glightbox>=0.4.0",
     "mkdocs-literate-nav>=0.6.1",
-    "mkdocs-material[imaging]>=9.5.45",
+    "mkdocs-material[imaging]>=9.7.0",
+    "mkdocs-redirects>=1.2.2",
     "mkdocstrings-python>=2.0.1",
 ]
 codegen = ["datamodel-code-generator==0.57.0"]