Loop detector: cycles up to length 5, stop one rep after the nudge - #60
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A live run evaded the length-3 guard within hours using a 4-tool cycle (terminate → launch → wait → screenshot) that also starves the per-signature window. Cycle guard now covers lengths 2-5 and stops at nudgeThreshold+1 verbatim repetitions — 5 reps of a 4-cycle would have meant 20 wasted calls. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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A live run evaded the length-3 guard within hours using a 4-tool cycle
(terminate → launch → wait → screenshot) that also starves the
per-signature window. Cycle guard now covers lengths 2-5 and stops at
nudgeThreshold+1 verbatim repetitions — 5 reps of a 4-cycle would have
meant 20 wasted calls.
Co-Authored-By: Claude Opus 4.8 (1M context) noreply@anthropic.com