red-ci-adamdaniel-ai

Diagnose and fix a red or blocked CI result after pushing to a cms-platform-style Jekyll site such as adamdaniel.ai. Use when a pushed branch or PR shows a failed, cancelled or never-reported required check, a PR stuck BLOCKED, or a job that fails at "Set up job". Covers reading every check conclusion on the head commit, telling a cancelled required check from a real failure, and the fixes for concurrency cancels, timeout walls, path-filtered required checks and unpinned actions.