The μ Atlas: Cross-System Assignment and Failure Audit v0.1
This paper turns the FRC μ topology into an auditable assignment task. It provides an authorial atlas for an egg, human, AI thread-agent, football match, ship, and solar system, while allowing absent and unresolved registers. Each application declares its unit, boundary, selective interface, retained and discarded information, testable link, and prohibited inference. A preregistered protocol then asks at least three blinded independent raters to classify fixed cases and records raw agreement and Fleiss' kappa before adjudication. Version 0.1 contains no independent-rater data and makes no reproducibility claim. Agreement would support methodological usability; structured disagreement would locate ambiguous definitions; arbitrary assignment would force revision or rejection.