Content evaluations ask whether the answer is right; trace tools ask what ran. Ω-API asks whether the conversation actually moved. Every session is read as a process shape in three letters—C converging, S holding, M drifting—measured by exact arithmetic, not sentiment. Shadow observes read-only and shows where agents stall, drift or loop; Operator acts at the flagged turn (PROCEED, CLARIFY, STOP).

A method for maintaining agent coherence across stateless decision boundaries in systems with irreversible constraints. The bridge mechanism operates at the interaction surface between agent and environment, restoring constraint-relevant information that would otherwise be lost. Empirically prevents the convergent-to-non-convergent phase transition (structural drift) without modifying the agent's internal capacity.

Applies the SDL framework as a domain-general computational method to oncology and antimicrobial resistance. The structural approach derives treatment dynamics from the three axioms without domain-specific modelling.