Hiddenness as a Structural Law of Emergence

When does prediction become trivial? This paper gives a typed structural answer: within the CSL scope, predictive content collapses when an upstream determining state is exposed to current observation. The load-bearing variable is the visibility coupling predicate Exposure(Lift, Substrate), which asks whether some polynomial-time current observable factors through the autonomous lift's internal state by a function non-constant on the realized carrier. We state a typed CSL core over the predictive-quotient holonomy carrier on autonomous-lifted polynomial-time substrates. The law has four clauses: dissolution under exposure, preservation under non-exposure, a degenerate clause when there is no predictive witness content, and strength-independence of the coupling function. The CSL is stated at diagnosis grade. We also give a granularity-mismatch theorem at R-Diagnosis: the framework's current and predictive quotients are strictly finer than the standard classes P and NP at the history level, but this strictness can be lost under standard language-level projection.