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Phase 7 reviewer (Sonnet, combined backend + frontend) flagged 3 🟡 warnings; two real fixes here, one tracking: W1 — DetectAnomaliesUseCase had an undocumented N+1: _anomalyRepo.ListAsync was called inside ProcessEventAsync, once per event. Hoisted to ExecuteAsync before the loop and threaded into ProcessEventAsync as a parameter. The per-event slice happens in-memory now. O(N_events) DB round-trips → 1. W2 — AnomalyDetector.ExtractMatchWinProbabilities had a dead expression '(decimal?)null ?? 0m' that always evaluated to 0m. Simplified to 'drawBet is not null ? rawDraw / total : 0m'. The 0m is never surfaced anyway (PDraw in the return uses the same null guard), so behaviour is identical. W3 — PLAN.md row updated with both Phase 7 commit hashes (a6ff368backend +12208a4frontend) and review verdict. Build 0/0, 276 tests still passing.