Adversarial, code-grounded review of an existing system's architecture: do the ADRs match the code, is the design right for a system of this nature, what are its inherent limitations and what concretely would have been better, every alternative proven against the code. Use when asked 'is our architecture sound' or 'what should we change about the design', for technical due diligence, before a major architectural commitment, or at milestone health checks. Not for one delivered ticket (code-review), decay across deliveries (rot-watch) or defect hunting (defect-sweep).
