Boarded with 8 other PRs in one combined worktree: typecheck:core, check:file-size, check:changelog-integrity, check:complexity, check:cognitive-complexity, check:cycles, check-native-deps all green; 75/75 focused tests pass. Fixes a genuinely confusing failure mode — matches the documented TROUBLESHOOTING.md symptom exactly. Thanks for the preflight check and clear diagnostics.