Opinionated FastAPI/Python health checker. Audits backend quality, security gates, and architectural health (Ruff/ty/Bandit/AST). Use for backend verification, route/auth audits, and identifying performance-blocking sync calls in async handlers. Keywords: FastAPI, Ruff, ty, backend health, OpenAPI, route auth, Pydantic v2
Use when refactoring fastapi-doctor toward a Ruff/Ty-style Rust-first architecture. This skill defines the exact crate boundaries, function shapes, and reference files to mimic for project walking, parsed-module management, rule selection, suppression handling, and thin crate roots.