feat(surface): major work on implementing surface constraints in a presciption agnostic manner

CMakeLists.txt

@@ -1,5 +1,5 @@
 cmake_minimum_required(VERSION 3.28)
-project(MeanField CXX)
+project(MeanField C CXX)
 
 set(CMAKE_CXX_STANDARD 23)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
@@ -138,15 +138,24 @@ target_sources(mean_field
         libmeanfield/interface/operators/kernels/rotation_displacement_force_kernels.cppm
         libmeanfield/interface/operators/prepared_rotation_displacement_force.cppm
         libmeanfield/interface/operators/prepared_displacement_operator.cppm
-        libmeanfield/interface/eos/eos_base.cppm
+        libmeanfield/interface/eos/quantities.cppm
+        libmeanfield/interface/eos/relations.cppm
+        libmeanfield/interface/eos/concepts.cppm
+        libmeanfield/interface/eos/evaluation.cppm
+        libmeanfield/interface/eos/pressure_surface.cppm
+        libmeanfield/interface/eos/runtime.cppm
         libmeanfield/interface/eos/polytropic.cppm
         libmeanfield/interface/models/structure/structure_base.cppm
         libmeanfield/interface/models/structure/polytropic.cppm
         libmeanfield/interface/models/structure_profile.cppm
-        libmeanfield/interface/surface/surface_base.cppm
-        libmeanfield/interface/surface/isobaric.cppm
+        libmeanfield/interface/surface/constant.cppm
+        libmeanfield/interface/surface/dependencies.cppm
+        libmeanfield/interface/surface/compiled.cppm
+        libmeanfield/interface/surface/compiler.cppm
         libmeanfield/interface/models/stellar_model.cppm
         libmeanfield/interface/operators/prepared_mass_normalization.cppm
+        libmeanfield/interface/operators/prepared_centering_constraint.cppm
+        libmeanfield/interface/operators/prepared_surface_constraint.cppm
         libmeanfield/interface/operators/prepared_stellar_equilibrium.cppm
 )
 
@@ -194,6 +203,12 @@ add_executable(tests
         tests/operators/contexts/gravity_field_context.cpp
         tests/physics/gravity_monopole_accuracy.cpp
         tests/physics/barotrope.cpp
+        tests/physics/polytropic_eos_characterization.cpp
+        tests/physics/equation_of_state_type_system.cpp
+        tests/physics/equation_of_state_consumer_contracts.cpp
+        tests/physics/polytropic_eos_relations.cpp
+        tests/physics/equation_of_state_runtime_view.cpp
+        tests/surface/constant_surface_compilation.cpp
         tests/operators/kernels/barotropic_closure_kernels.cpp
         tests/operators/prepared_barotropic_closure.cpp
         tests/operators/contexts/barotropic_closure_linearization_context.cpp
@@ -215,7 +230,6 @@ add_executable(tests
         tests/operators/prepared_rotation_displacement_force_analytic.cpp
         tests/operators/prepared_rotation_displacement_force_affine_deformation.cpp
         tests/operators/prepared_displacement_operator.cpp
-        tests/surface/isobaric.cpp
         tests/models/stellar_model.cpp
         tests/operators/prepared_mass_normalization.cpp
         tests/operators/prepared_stellar_equilibrium.cpp
@@ -233,6 +247,7 @@ target_sources(experiment_mod
         PUBLIC
         FILE_SET CXX_MODULES FILES
         experiments/experiment_results.cppm
+        experiments/stellar_null_space.cppm
 )
 target_link_libraries(experiment_mod
         PUBLIC
@@ -247,6 +262,21 @@ add_executable(experiments
 
 target_link_libraries(experiments PRIVATE mean_field test_mod experiment_mod Catch2::Catch2 Boost::boost)
 
+add_executable(stellar_null_space_experiments
+        experiments/experiment_main.cpp
+        experiments/rigid_motion_null_space.cpp
+        experiments/gravity_completed_rigid_motion.cpp
+)
+
+target_link_libraries(stellar_null_space_experiments
+        PRIVATE
+        mean_field
+        test_mod
+        experiment_mod
+        Catch2::Catch2
+        Boost::boost
+)
+
 include (CTest)
 include (Catch)
 catch_discover_tests(