feat(shell-surface-pressure-load): step 1 - map-pressure-input-contract

include/fesa/model/domain.h

@@ -74,12 +74,19 @@ class StepDefinition {
   const DomainCollectionView<ConcentratedNodalLoad>& ConcentratedLoads()
       const noexcept;
 
+  /// @brief Returns additive surface pressure records in source order.
+  const std::vector<SurfacePressureLoadDefinition>& SurfacePressureLoads()
+      const noexcept;
+
   /// @brief Returns the approved static procedure identity.
   StaticProcedureKind ProcedureKind() const noexcept;
 
   /// @brief Reports whether this step uses the nonlinear static procedure.
   bool IsNonlinearStatic() const noexcept;
 
+  /// @brief Reports the source NLGEOM setting for this static step.
+  bool UsesNonlinearGeometry() const noexcept;
+
   /// @brief Returns the static initial increment provenance value.
   double InitialIncrement() const noexcept;
 
@@ -109,6 +116,7 @@ class StepDefinition {
   std::vector<std::unique_ptr<Load>> loads_;
   LoadView loads_view_;
   DomainCollectionView<ConcentratedNodalLoad> concentrated_loads_view_;
+  std::vector<SurfacePressureLoadDefinition> surface_pressure_loads_;
   StaticProcedureKind procedure_kind_;
   bool nlgeom_;
   double initial_increment_;
@@ -173,6 +181,9 @@ class Domain {
   /// @brief Returns element sets in stable declaration order.
   const std::vector<ElementSet>& ElementSets() const noexcept;
 
+  /// @brief Returns assembly element surfaces in stable declaration order.
+  const std::vector<ElementSurfaceDefinition>& ElementSurfaces() const noexcept;
+
   /// @brief Returns static steps in stable declaration order.
   const DomainCollectionView<StepDefinition>& Steps() const noexcept;