loop-design-check

Design a goal-oriented agent loop or review one for failure modes: spinning, Goodhart-gaming the verifier, or running a wrong answer to completion. Covers machine-decidable goals, loop types, plan/build/judge skeletons, and runaway prevention; mechanism wiring lives in autonomous-loops. Use when designing, writing, or checking an agent loop. Chinese triggers: write a loop, design a loop, make a loop, check whether a loop is correct, loop health check, whether a loop will run away, decidable goals, the five failure modes, plan build judge.