Read the README.md of every repo in the GitLab challenges group via the
REST API and rework the HedgeDoc note for project tracking: challenges
ready for infra testing first, then status by category and a
category x difficulty grid. Free-text status/difficulty/category values
are normalised; untouched templates and repos scheduled for deletion
are left out of the counts.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>