Add guided baseline and defended comparison

[maximalfocus]

Summary

• add a same-seed, single-variable baseline/defended comparison
• report required outcome, privilege, organization, detection, containment, and reuse metrics
• add the eight-minute presenter sequence and prediction-before-reveal flow
• qualify the intervention as specific to the modeled chain

Verification

• npm test — 12 tests passed
• npm run typecheck — passed
• npm run lint — passed
• npm run build — passed

Closes #5