cd9f7e4ea3
Three tasks for spec 0046. T1: zip_params (aura-core), RED-first. T2: GridSpace retains its ParamSpec list + SweepFamily carries it + named_params (aura-engine), RED-first, with the aura-registry optimize-test SweepFamily literal threaded in the same task. T3: sim_optimal_manifest typed-Scalar migration + all eight call sites (aura-cli), behaviour-preserving. Each signature/field change threads every one of its sites within its own task, before that task's workspace compile gate. refs #57