Event scoring was measured at chance level on the 77 Rodden-AA holdout
cases (BUG-1091). The new flow finds the dividing line nearest the reported
time, describes how the flipped divisional charts read on either side, asks
up to five self-assessment questions, and saves the user's own choice
(provenance user_choice) with the domains to read in both versions.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01DbBXozbkyFNqbu8pVEtZ7W
