ARK-480 — API Rate Limit · Dependency Loss

ARK-480 — Part of the ExecutionProof experimental corpus by Remnant Fieldworks Inc. This experiment tests fail-safe behavior when critical authorization dependencies (RateLimitStore, TokenValidator, UsageTracker, AuditLogger) become unavailable. It tests 8 arms × 100 scenarios = 800 decisions across two decision paths: ALLOW (all dependencies available), HOLD (any dependency unavailable). Verdict: PASS (g_allow_available=1.0000, g_hold_unavailable_min=1.0000, g_margin=0.9500). Dual-guard concordance: 800/800 (100%). Kill-gate: 150/150 wrong-allows (falsifiable). Tests that API rate limit authorization fails closed when critical infrastructure is unavailable.