Plan step 38 review: the index reads example titles out of each section's source with a regex, which once skipped all six Progress examples without a sound; the existing test only checked that indexed anchors exist. A new test renders every section and canonical layout page and requires the index's examples for it to equal the titled examples the page draws, both ways, so a format the regex misses (or an anchor it invents) fails by page. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Qwx5USif3wFFmxtHg5U1g9