Three-Layer Frustration Detection System

Description

Production instrumentation stack for detecting user dissatisfaction: (1) zero-latency regex classification on every user message for correction-tone phrases, (2) end-of-session LLM-labeled satisfaction (good/neutral/frustrated) trended across model versions, and (3) 0.5% survey sampling with full transcript upload on 'bad' rating. Extends the simpler regex-only view in prior rounds documented by the Frustration Telemetry entity.

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src-20260409-5acfec94bd6e