G.5:4.6a - Causal method dispatch declarations

When method dispatch compares causal uses, each compared Method declares its causal question/rung and whether it is being used as an observational predictor, intervention optimizer, counterfactual strategy, causal fairness estimator, causal-RL policy, or simulation-only Method.

MethodFamily.causalUseDispatchSpec?:
  causalUseQuestionRef?: CausalUseQuestionRef
  targetCausalityLadderRung: CausalityLadderRung
  causalUseClaimKind: CausalUseClaimKind
  causalActionPolicyClass?: CausalActionPolicyClass
  causalSupportComponentRefs?: CausalSupportComponentRefs
  causalUseSupportResultRef?: CausalUseSupportResultRef
  causalMethodUseClassification:
    observationalPredictor |
    interventionOptimizer |
    counterfactualStrategy |
    causalFairnessEstimator |
    causalRLPolicy |
    simulationOnlyMethod
  supportedUse
  unsupportedUse

CausalUseQuestionRef identifies the question content used by C.28; it is not a durable root U-kind. causalMethodUseClassification describes the Method’s proposed selector-facing use and supplies no system-role assignment, responsibility, authority, or causal certification.

A simulation-only Method cites simulationResultRef inside its support components and states bounded model use plus unsupported realized/interventional use. G.5 declares the dispatch result; C.28 supplies the causal-support result. A selector may still abstain even when a C.28 result is supported.