Trigger full production pipeline (#41)

## Purpose
Trigger an important-file change on main to validate full production
execution, including docs site build and Pages publish.

## Change
- update README.md with a validation marker

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>

Author: MariusStorhaug

README.md

@@ -67,3 +67,5 @@ You can either help by picking up an existing issue or submit a new one if you h
 ## Acknowledgements
 
 Here is a list of people and projects that helped this project in some way.
+
+Validation marker: docs publish verification run at 2026-07-18 22:41:56Z.