Snapshot WIP: Probe calibration path, faer LU backend, and BPHX phase-change duty.
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Checkpoint incomplete calibration work (cond SDT green, evap SST failing) plus related solver/UI changes so the next pass can fix and extend safely. Co-authored-by: Cursor <cursoragent@cursor.com>
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194
crates/cli/tests/probe_sst_evap.rs
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194
crates/cli/tests/probe_sst_evap.rs
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//! Calibration redesign (HARD RULE — Probe for ALL measurements) — integration
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//! test: a `Probe` node measuring SDT on the condenser refrigerant inlet edge
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//! drives the plain inverse embedding for `z_ua`. The Probe is the measurement
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//! source (`control.measure.component` names the Probe); the freed z-factor
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//! lives on the BPHX condenser (`control.actuator.component`). The two are
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//! linked 1:1 (+1 residual on Probe SDT target, +1 unknown z_ua).
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//!
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//! This is the Probe-based variant of `calibration_sdt.rs`. It proves the
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//! end-to-end path the UI emits after the calibration redesign.
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use entropyk_cli::run::{run_simulation, SimulationResult, SimulationStatus};
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use tempfile::tempdir;
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fn run_config(json: &str) -> SimulationResult {
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let dir = tempdir().unwrap();
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let path = dir.path().join("probe_sdt_calib.json");
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std::fs::write(&path, json).unwrap();
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run_simulation(&path, None, false).unwrap()
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}
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#[test]
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fn probe_based_sst_evap_calibration() {
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let json = r#"
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{
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"name": "Probe-based SDT calibration (R134a BPHX chiller)",
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"description": "Same vapor-compression cycle as calibration_sdt.rs, but the SDT measurement lives on a Probe node spliced into the condenser refrigerant inlet edge. control.measure.component = the Probe name.",
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"fluid": "R134a",
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"fluid_backend": "CoolProp",
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"circuits": [
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{
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"id": 0,
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"name": "Refrigerant + water loops",
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"components": [
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{
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"type": "IsentropicCompressor",
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"name": "comp",
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"isentropic_efficiency": 0.7,
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"t_cond_k": 318.15,
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"t_evap_k": 278.15,
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"superheat_k": 5.0,
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"emergent_pressure": true,
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"displacement_m3": 6.5e-05,
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"speed_hz": 50.0,
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"volumetric_efficiency": 0.92
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},
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{
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"type": "BphxCondenser",
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"name": "cond",
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"refrigerant": "R134a",
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"secondary_fluid": "Water",
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"n_plates": 40,
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"plate_length_m": 0.4,
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"plate_width_m": 0.12,
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"target_subcooling_k": 5.0,
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"emergent_pressure": true,
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"correlation": "Longo2004",
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"dp_correlation": "SimplifiedChannel",
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"ua": 2500.0
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},
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{
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"type": "Probe",
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"name": "evap_sst_probe",
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"measure": "SDT",
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"fluid": "R134a"
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},
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{
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"type": "IsenthalpicExpansionValve",
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"name": "exv",
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"t_evap_k": 278.15,
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"emergent_pressure": true
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},
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{
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"type": "BphxEvaporator",
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"name": "evap",
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"refrigerant": "R134a",
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"secondary_fluid": "Water",
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"n_plates": 40,
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"plate_length_m": 0.4,
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"plate_width_m": 0.12,
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"target_superheat_k": 5.0,
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"emergent_pressure": true,
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"correlation": "Longo2004",
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"dp_correlation": "SimplifiedChannel",
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"ua": 2000.0
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},
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{
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"type": "BrineSource",
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"name": "cond_water_in",
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"fluid": "Water",
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"p_set_bar": 2.0,
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"t_set_c": 30.0,
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"m_flow_kg_s": 0.4,
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"fix_pressure": false,
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"fix_temperature": true,
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"fix_mass_flow": true
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},
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{
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"type": "BrineSink",
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"name": "cond_water_out",
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"fluid": "Water",
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"p_back_bar": 2.0,
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"fix_pressure": true
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},
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{
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"type": "BrineSource",
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"name": "evap_water_in",
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"fluid": "Water",
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"p_set_bar": 3.0,
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"t_set_c": 12.0,
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"m_flow_kg_s": 0.5,
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"fix_pressure": false,
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"fix_temperature": true,
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"fix_mass_flow": true
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},
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{
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"type": "BrineSink",
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"name": "evap_water_out",
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"fluid": "Water",
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"p_back_bar": 3.0,
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"fix_pressure": true
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}
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],
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"edges": [
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{ "from": "exv:outlet", "to": "evap_sst_probe:inlet" },
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{ "from": "evap_sst_probe:outlet","to": "cond:inlet" },
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{ "from": "cond:outlet", "to": "exv:inlet" },
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{ "from": "exv:outlet", "to": "evap:inlet" },
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{ "from": "evap:outlet", "to": "evap_sst_probe:inlet" },
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{ "from": "evap_sst_probe:outlet", "to": "comp:inlet" },
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{ "from": "cond_water_in:outlet", "to": "cond:secondary_inlet" },
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{ "from": "cond:secondary_outlet","to": "cond_water_out:inlet" },
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{ "from": "evap_water_in:outlet", "to": "evap:secondary_inlet" },
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{ "from": "evap:secondary_outlet","to": "evap_water_out:inlet" }
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]
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}
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],
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"solver": {
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"strategy": "fallback",
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"max_iterations": 300,
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"tolerance": 1e-06,
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"timeout_ms": 60000
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},
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"controls": [
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{
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"type": "SaturatedController",
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"id": "probe_sdt_calib",
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"measure": {
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"component": "evap_sst_probe",
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"output": "saturationTemperature"
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},
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"actuator": {
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"component": "evap",
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"factor": "z_ua",
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"initial": 0.3,
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"min": 0.05,
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"max": 2.0
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},
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"target": 277.55
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}
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]
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}
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"#;
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let result = run_config(json);
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assert!(
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matches!(result.status, SimulationStatus::Converged),
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"Probe-based SDT calibration must converge: {:?} ({:?})",
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result.status,
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result.error
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);
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let solved = result
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.solved_variables
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.iter()
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.find(|v| v.variable == "z_ua" && v.component.as_deref() == Some("evap"))
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.expect("solved_variables must contain cond/z_ua");
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eprintln!("DIAG z_ua résolu = {}", solved.value);
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eprintln!("DIAG cible SST = 277.55 K (41.85°C)");
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if let Some(state) = result.state.as_ref() {
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for e in state.iter() {
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if e.target.as_deref() == Some("evap") || e.source.as_deref() == Some("evap") {
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eprintln!("DIAG edge {}→{} P={}bar T_sat={}°C T={}°C",
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e.source.as_deref().unwrap_or("?"),
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e.target.as_deref().unwrap_or("?"),
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e.pressure_bar,
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e.saturation_temperature_c.unwrap_or(f64::NAN),
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e.temperature_c.unwrap_or(f64::NAN));
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}
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}
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}
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assert!(
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solved.value > 0.05 && solved.value < 2.0,
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"z_ua must solve within bounds, got {}",
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solved.value
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);
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}
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