Snapshot WIP: solver HP epic progress, BPHX/HX physics, BMAD skill refresh.

Capture uncommitted solver robustness work (regularization, domain errors, linear solver lifecycle, tube DP/MSH), web workbench updates, and synced BMAD skills across IDE agent folders before starting BPHX pressure-drop.

Co-authored-by: Cursor <cursoragent@cursor.com>

crates/solver/tests/inverse_calibration_algorithm.rs

@@ -44,7 +44,7 @@ impl Component for MockCalibratedHx {
     ) -> Result<(), ComponentError> {
         // Fix edge states to known values.
         // CM1.2: per-edge state is (ṁ, P, h); skip ṁ at index 0.
-        residuals[0] = state[1] - 300.0;
+        residuals[0] = state[1] - 300_000.0;
         residuals[1] = state[2] - 400.0;
         Ok(())
     }