rtx-cfd: CurvilinearPisoSolver::momentum_balance — the patch's own momentum balance on its solved cells in the scheme's fluxes (outward ρFu_f with the predictor's face value, Laplacian-form μ∇u·S on the solved/acceptor interface and the wall, the least-squares pressure volume sum vs the face-pressure integrals); flux_force, wall_force, pressure_defect δP; overset_cfd1 prints it and the acceptor band's mismatch, saves the patch flux, and RTX_OVERSET_CFD1_LOAD=dir runs the diagnostics offline on saved fields

Co-Authored-By: Claude Fable 5.1 <[email protected]>
Claude-Session: https://claude.ai/code/session_01X2GmJXeQ2njUecEKiJZ1G2

crates/specialized/rtx-cfd/src/solvers/incompressible/mod.rs

@@ -48,8 +48,8 @@ pub use boundary_conditions::{
 };
 pub use curvilinear::{
     CurvilinearParameters, CurvilinearPisoSolver, CurvilinearResult, CurvilinearSolverState,
-    NormalDiffusion, Operators, PatchBoundaries, PatchConvection, PatchField, PatchLoad, SideBc,
-    StepGeometry,
+    NormalDiffusion, Operators, PatchBalance, PatchBoundaries, PatchConvection, PatchField,
+    PatchLoad, SideBc, StepGeometry,
 };
 pub use embedded::{EmbeddedParameters, EmbeddedPisoSolver, EmbeddedResult, EmbeddedSolverState};
 pub use embedded_body::{