- cardDirs: course/cards only from Module 5 (spec 6.2a); fixture modules 04/05 and tests - coupling-audit: noun words match as UPPERCASE, PascalCase or a whole string literal; lowercase identifiers like key/flag pass; card names keep every variant - isMain() argv guard replaces import.meta.main in coupling-audit and verify-references; engines.node >=22 - expansion-check: git diff --no-renames so moving engine code into content fails - start-module and other tools: clear error when .course.json is missing - check-links: malformed URLs reported as invalid URL instead of throwing Co-Authored-By: Claude Opus 5.5 <[email protected]>