Pre-PR code review gate. Run before opening a pull request, and again before pushing a substantive update to an open one — not per commit. Required when the PR's branch diff touches Python under veomni/, tasks/ or tests/, or CI workflows, pyproject.toml, uv.lock, docker/ or configs/. Also trigger proactively for runtime or configuration changes that span multiple files, touch shared infrastructure (BaseTrainer, distributed, model loading, data pipeline, ops dispatch), or have uncertain safety. Docs, comments and .agents/-only changes use the self-check below. The review launches a subagent that checks implementation quality, multi-file consistency, and known constraint violations, then rates the change as safe/needs-attention/risky.