w3winred --selftest: OK - the 17 Sep crossovers (177/234/348, 185/240/353, 155/205/372) and their published k values (376/416, 370/414, 337/478) reproduce through the shared arithmetic, the -t12 CPU -m1024 cell stays a bound with m=512 excluded, the drift arm reproduces the A/D control's four published deltas, a REFUSED cell neither crashes the bootstrap nor re-enters it, the shape test refuses two window sizes by name, the jsonl adapter reproduces the 15 Sep EPYC guest (234/202/323 CPU) with the k phase excluded, a repeated --grade label is refused rather than fused, and the --grade arm reproduces the 15 Sep block-size table (410/343 CPU, 490 wall) and the create payload null (+4/-7 with its signs) and refuses a label containing "=", the rung-noise column reproduces crossbias arm 5 (3.9/3.4, 4.2/3.6, 5.3/1.3, 0.8/0.2 rows) through the ONE shared rung_noise and reaches the --grade output, and a leg missing a reduced field is refused by file, line and field on the jsonl side too