Context Contamination: How a Coding Harness De-Blinded a Blind Evaluation
The audit behind the convergent-personality paper's blindness caveat: every evaluative claude -p call in the project ran with the subject's ground-truth trait scores silently in context, because the CLI boots a full agent harness that loads the operator's memory file. Mechanism, empirical canary, blast radius, and the isolation protocol that closed it.