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>

docs/components/fin-coil-condenser.md

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+# FinCoilCondenser
+
+Config type: `"FinCoilCondenser"`  
+Source: finned-coil condenser geometry module
+
+---
+
+## EN
+
+### Purpose & model
+
+Finned-tube outdoor coil. Geometry (tubes, rows, fin pitch, face velocity) feeds air-side heat transfer estimates; refrigerant side condenses with subcooling target options.
+
+Correlations: coil/fin air-side Nu–Re style relations as implemented in the geometry stack (see source for exact correlation names).
+
+### Residuals
+
+HX residual set analogous to Condenser + coil geometry parameters for UA construction.
+
+### Ports
+
+Refrigerant + air secondary ports.
+
+### Calibration
+
+`z_ua` / geometry scales — default unity.
+
+### JSON (main)
+
+Tube OD, rows, fin density, face velocity, OAT, design capacity — see componentMeta FinCoilCondenser params.
+
+---
+
+## FR
+
+### But
+
+**Batterie ailetée** de condensation air.
+
+### Corrélations
+
+Côté air basées géométrie (détail dans le code).
+
+### JSON
+
+Voir meta UI / CLI.