The 300-probe sample this harness scored by modality read the screenshot
modality 0.818 where all 320 of its answerable queries read 0.659, because
striding a file-ordered list and truncating at 300 reshuffles the modality
mix. Recall is now scored over every answerable query (2,928) and latency
over a stratified sample, which is what latency needs and what recall does
not. The separate conversation sub-pass is gone: conversation is inside the
suite, and by_category already carries its six LongMemEval types.