paired/uniform-r8s8/*.json: three alternating pairs and one candidate profile row.paired/r8s4/*.json: divergent four-slot evidence.paired/r8s2/*.json: divergent two-slot evidence.summary.json: prefill grouping, performance and memory interpretation.gates.json: focused/full correctness counts.environment.txt: baseline, ordering and measurement contract.
Each profile row records logical row_prefill_calls separately from physical prefill_batch_calls,
so speedup cannot be produced by silently omitting requests.