Auto-retrain is easy; auto-promote is where teams ship incidents. The champion/challenger gate design, two eval sets, segment floors, guardrail metrics, and the defensible line on when a human stays in the loop.
Updated Aug 2026 · Grounded in real Forward Deployed Engineer interview loops and written to a senior-engineer editorial bar.
Auto-retrain is easy; auto-promote is where teams ship incidents. The champion/challenger gate design, two eval sets, segment floors, guardrail metrics, and the defensible line on when a human stays in the loop.
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