Runtime Behavior Review

Runtime behavior analysis layer for every infrastructure, observability, monitoring, middleware, rate-limiting, health-check, readiness-probe, metrics-collection, caching, queueing, or system-lifecycle PR. Catches what static code review misses — self-measurement contamination, cumulative-vs-windowed metric confusion, boundary math at small sample sizes, shutdown/drain race conditions, config flags that are semantic no-ops, middleware ordering that changes what gets measured, probe interference with business metrics, and metric exposure without auth. Composes with generator-reviewer-loop and triple-pass-review-loop as an additional mandatory checklist that runs AFTER Stag…