perf(jacobian-action): major updates to jacobian action application by removing redudant quadrature work. ~5x increase in speed

libmeanfield/interface/operators/stellar_equilibrium_system.cppm

@@ -0,0 +1,26 @@
+module;
+
+#include <type_traits>
+#include <utility>
+
+export module mean_field:operators.stellar_equilibrium_system;
+
+export import :operators.stellar_equilibrium_problem;
+
+export namespace mean_field::equilibrium {
+    // Transitional source-compatible names. New code should use
+    // StellarEquilibriumProblem and equilibrium::discretize.
+    template <typename Candidate>
+    concept CurrentlySupportedStellarModel                                  = StellarEquilibriumModel<Candidate>;
+
+    template <StellarEquilibriumModel Model> using StellarEquilibriumSystem = StellarEquilibriumProblem<Model>;
+
+    template <StellarEquilibriumModel Model>
+    [[nodiscard]] auto makeStellarEquilibriumSystem(
+        fem::FEM &finiteElementModel,
+        const mapping::DomainMapper &domainMapper,
+        Model &&stellarModel
+    ) {
+        return discretize(std::forward<Model>(stellarModel), StellarDiscretization{finiteElementModel, domainMapper});
+    }
+} // namespace mean_field::equilibrium