Loop detector: repeating-cycle guard (A→B→A→B evaded stop forever) - #59
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Per-signature counting peaks at windowSize/cycleLen — for any 2-tool cycle in a window of 6 that's 3, below the stop threshold of 5, so an alternating loop could NEVER be stopped (observed live: endless sim_rotate → sim_screenshot the user had to interrupt). The detector now also finds the trailing block of length 2-3 repeating verbatim and nudges/stops on REPETITION count, with a names-only cycle label and a cycle-specific nudge message. Uniform runs keep the original path. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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Per-signature counting peaks at windowSize/cycleLen — for any 2-tool
cycle in a window of 6 that's 3, below the stop threshold of 5, so an
alternating loop could NEVER be stopped (observed live: endless
sim_rotate → sim_screenshot the user had to interrupt). The detector now
also finds the trailing block of length 2-3 repeating verbatim and
nudges/stops on REPETITION count, with a names-only cycle label and a
cycle-specific nudge message. Uniform runs keep the original path.
Co-Authored-By: Claude Opus 4.8 (1M context) noreply@anthropic.com