Research brief reopening the 09-19 Jev evaluation: same model
(jev-1.13.0), only the state changes (previous turn + previous
decision + continuation Noul, per Magpie v0.1.142). Re-extract
source B with case_id; thresholds unchanged.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0199rbQDTsUbCVw84wc8BTFe