A step-by-step guide to debugging failing GitHub pull requests across multiple CI layers. It covers fixing authentication/permission errors with Personal Access Token scopes, running lint checks locally with markdownlint-cli2, resolving common markdown lint errors (non-descriptive links, line length, list indentation), fixing malformed inline-code block, fixing build errors like duplicate entries in navigation files, understanding cascading CI failures and how to trace them to the root cause, and safely handling Git branch divergence with rebase vs merge and force-with-lease.
Table of contents
Understanding the CI Pipeline (What’s Actually Happening)How a CI Pipeline Processes Your Pull RequestA Practical Debugging WorkflowKey TakeawaysConclusionSort: