Fix NoWave constructor and remove unused variable

Update NoWave() calls to match refactored wave class API; remove unused variable in SS fitter.

Author: dav-og

src/hydro/radiation/radiation_ss_fitter.cpp

@@ -244,7 +244,6 @@ Eigen::VectorXd RadiationStateSpaceFitter::ReconstructKernel(
         return Eigen::VectorXd::Zero(num_samples);
     }
 
-    const int O = result.order;
     Eigen::VectorXd K(num_samples);
 
     // K[k] = C * expm(A * dt * k) * B

src/hydro/runner/run_from_yaml.cpp

@@ -671,10 +671,9 @@ int RunHydroChronoFromYAML(int argc, char* argv[]) {
         system_info_lines.push_back(hydroc::cli::CreateAlignedLine("⚙️", "Constraints", std::to_string(system->GetLinks().size())));
         system_info_lines.push_back(hydroc::cli::CreateAlignedLine("⏱️", "Time Step", hydroc::FormatNumber(loop_dt, 4) + " s"));
 
-        // Calculate approximate DOF (6 * num_bodies - constraint equations)
+        // Calculate approximate DOF (6 * num_bodies)
         int num_bodies = system->GetBodies().size();
-        int num_constraints = system->GetLinks().size();
-        int approx_dof = num_bodies * 6;  // Rough estimate
+        int approx_dof = num_bodies * 6;
         system_info_lines.push_back(hydroc::cli::CreateAlignedLine("🎯", "Est. Degrees of Freedom", std::to_string(approx_dof)));
 
         hydroc::cli::ShowSectionBox("System Configuration", system_info_lines);

tests/regression/oswec/test_oswec_decay_ss.cpp

@@ -118,7 +118,7 @@ int main(int argc, char* argv[]) {
     revolute->Initialize(base_body, flap_body, ChFramed(ChVector3d(0.0, 0.0, -8.9), revoluteRot));
     system.AddLink(revolute);
 
-    auto default_dont_add_waves = std::make_shared<NoWave>(2);
+    auto default_dont_add_waves = std::make_shared<NoWave>();
 
     std::vector<std::shared_ptr<ChBody>> bodies;
     bodies.push_back(flap_body);

tests/regression/sphere/test_sphere_decay_ss.cpp

@@ -46,7 +46,7 @@ int main(int argc, char* argv[]) {
     sphereBody->SetMass(261.8e3);
     system.Add(sphereBody);
 
-    auto default_dont_add_waves = std::make_shared<NoWave>(1);
+    auto default_dont_add_waves = std::make_shared<NoWave>();
 
     std::vector<std::shared_ptr<ChBody>> bodies;
     bodies.push_back(sphereBody);