KL lower bound : 0.020110   95% CI over 24 windows [0.014211, 0.026321]
median KLD     : 0.000036     p90 0.046850  p95 0.095613  p99 0.325966  max 6.8365
same top-1     : 96.716 %   [95.532, 97.833]
ppl            : reference 1.8919   candidate 1.9004   (+0.448 %)
|d logprob|    : 0.08432 on the actual tokens
common set     : mass median 1.00000  p1 0.99213  min 0.7041   (coarsened with 9 run(s))
normalization  : stored top-K mass max 1.0000018, rows past 1+1e-4: 0
written to /logs/kld-flat-r2-code.json