mkdocs: add automatic light/dark mode

Support operating systems that automatically switch between light and dark appearances

https://squidfunk.github.io/mkdocs-material/setup/changing-the-colors/#automatic-light-dark-mode

Author: practicalli-johnny

CHANGELOG.md

@@ -5,6 +5,7 @@
 ## Added
 - install: remove -Sdescribe (deprecated), use --version
 - cli: add run repl as an explicit section
+- mkdocs: add automatic light/dark mode
 
 # 2025-05-16
 ## Added

mkdocs.yml

@@ -31,6 +31,11 @@ theme:
     - navigation.top
     - navigation.tracking # Update URL with sub-heading anchor names
   palette:
+    # Palette toggle for automatic mode
+    - media: "(prefers-color-scheme)"
+      toggle:
+        icon: material/brightness-auto
+        name: Switch to light mode
     # Palette toggle for light mode
     - media: "(prefers-color-scheme: light)"
       scheme: default