Pages validation action

Fetches the published Pages artifacts and compares them with the local source or locally rendered output.

Source paths come from actions/publication.manifest. Documentation routes are discovered from the complete local render, so adding a canonical docs/**/readme.md page does not require another hard-coded validation list.

bash actions/validate.pages.sh

The default target is https://devs-guide.github.io/debian. Override it with BASE_URL after a deployment to another project site. This action requires network access, curl, and Pandoc because it renders the canonical local documentation before comparing public routes.

BASE_URL=https://example.invalid/debian \
  bash actions/validate.pages.sh

Downloads and the local documentation render are kept in an isolated per-invocation temporary directory and removed by the action’s exit trap.