50% Compliance, Not 0%: How a Logging Spike Almost Triggered the Wrong Architecture Rewrite

Short summary

A developer discovered that a prompt augmentation pipeline's apparent 0% compliance was caused by a regex bug; actual compliance was 50%. The incident walkthrough teaches spike vs. rewrite decision methodology, LLM engineering practices, and Chrome GPU debugging, with reproducible commands and comprehensive analysis.

• •0% compliance metric masked by regex bug; real value was 50%
• •Teaches decision framework for spikes vs. architecture rewrites
• •Includes reproducible Chrome GPU deadlock diagnosis and debugging methodology

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