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>

.entropyk/modules/30XF.ekmod

@@ -0,0 +1,8 @@
+{
+  "components": [],
+  "connections": [],
+  "edges": [],
+  "instances": [],
+  "params": {},
+  "ports": {}
+}