Bash SFT note 03 evidence
Sanitized aggregate packet for the 30 August 2026 mix-composition, continuation, harvest, last40, Kimi, and fair-baseline report.
Boundary: Arm A won imitation val loss on a general mix. The product checkpoint is last40 wd=0.1 at 92/98 locked file-search. Under a separate matched prompt it scored 90/98, versus 8/98 for its exact stock base and 4/98 for NL2Shell 0.8B. The historical canary remains 0/1. Training JSONL is unpublished.