red-flags

Scans code against 17 design smells (the book's 14 named Red Flags plus 3 process-stage signals) and produces a structured diagnostic report. Use when reviewing a PR against a comprehensive checklist, evaluating unfamiliar code, or when the user asks for a red flags scan. Not for diagnosing why code feels complex (use complexity-recognition) or whether a PR maintains design trajectory (use code-evolution).