Raw succeeded/total read 61% on a healthy pipeline because coverage
gaps (no-catalog, unknown VIN) counted as failures, and latency
percentiles mixed ~10ms cache hits with ~5-40s provider chains
(P50 28ms next to P95 25.8s meant nothing).
- partition failures exactly: no_catalog / unknown / real (timeout,
provider) via one CASE bucket
- Başarı = decode health (coverage gaps excluded), Gerçek hata real
failures only, new Kapsama dışı card (katalog yok + unknown VIN)
- P50/P95/P99 now fresh decodes only, cache hits excluded
- evening brief gains realErrorRatePct/decodeHealthPct/noCatalog24h
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>