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/benches/full_solve.rs

@@ -0,0 +1,45 @@
+//! Phase-0 benchmark: end-to-end solve on three reference cycles.
+//!
+//! Each benchmark builds a real CoolProp-backed emergent-pressure R134a cycle
+//! and solves it with the fallback Newton solver.
+
+use criterion::{black_box, criterion_group, criterion_main, Criterion};
+
+mod common;
+
+fn bench_reference_cycle_a(c: &mut Criterion) {
+    c.bench_function("full_solve_reference_cycle_a", |b| {
+        b.iter(|| {
+            let mut system = common::build_reference_cycle_a();
+            common::solve_reference_system(&mut system);
+            black_box(());
+        });
+    });
+}
+
+fn bench_reference_cycle_b(c: &mut Criterion) {
+    c.bench_function("full_solve_reference_cycle_b", |b| {
+        b.iter(|| {
+            let mut system = common::build_reference_cycle_b();
+            common::solve_reference_system(&mut system);
+            black_box(());
+        });
+    });
+}
+
+fn bench_reference_cycle_c(c: &mut Criterion) {
+    c.bench_function("full_solve_reference_cycle_c", |b| {
+        b.iter(|| {
+            let mut system = common::build_reference_cycle_c();
+            common::solve_reference_system(&mut system);
+            black_box(());
+        });
+    });
+}
+
+criterion_group! {
+    name = benches;
+    config = common::end_to_end_criterion();
+    targets = bench_reference_cycle_a, bench_reference_cycle_b, bench_reference_cycle_c
+}
+criterion_main!(benches);