Verified with `ruff rule PLR0915`: it is `too-many-statements` (default 50), not a line-length rule. Ruff has no line-based function-length rule at all. python.md now says so and points both limits at a pytest case; coding-dev.md gains the general distinction between a real length lint and a proxy. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>