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/mchx-condenser-coil.md

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+# MchxCondenserCoil / MchxCoil
+
+Config types: `"MchxCondenserCoil"`, `"MchxCoil"`  
+Source: microchannel condenser coil module
+
+---
+
+## EN
+
+### Purpose & model
+
+**Microchannel** air-cooled condenser coil. Compact multi-port tubes + air fins. UA from geometry and air/refrigerant side coefficients as coded; runtime residual path follows condenser-style energy balances.
+
+### Residuals
+
+Condenser-like refrigerant + air coupling residuals.
+
+### Ports
+
+Refrigerant + air.
+
+### Calibration
+
+Z-factors on UA/ΔP when exposed (default 1.0).
+
+### JSON
+
+Geometry and air-side setpoints per CLI arm / UI meta (`design_capacity_kw`, face velocity, OAT, …).
+
+---
+
+## FR
+
+### But
+
+Batterie **micro-canaux** de condensation.
+
+### JSON
+
+Voir meta UI / exemples.