Add diagram workbench UI with Modelica DoF coaching and ISO glyphs.

Ship the Next.js cycle editor with CAD chrome, technical HX symbols, Fixed/Free boundary guidance, and secondary water/air pressure drop support in the solver stack.

Co-authored-by: Cursor <cursoragent@cursor.com>

crates/cli/examples/chiller_flooded_delta_t_rating.json

@@ -0,0 +1,105 @@
+{
+  "name": "Water-cooled chiller — ΔT rating on evaporator loop",
+  "description": "Evap loop: Free ṁ + Fixed T_out=7 °C (ΔT=−5 K from 12 °C). Cond loop keeps Fixed ṁ (stable anchor).",
+  "fluid": "R134a",
+  "fluid_backend": "CoolProp",
+  "circuits": [
+    {
+      "id": 0,
+      "name": "Refrigerant + secondary loops",
+      "components": [
+        {
+          "type": "IsentropicCompressor",
+          "name": "comp",
+          "isentropic_efficiency": 0.70,
+          "t_cond_k": 313.15,
+          "t_evap_k": 278.15,
+          "superheat_k": 5.0,
+          "emergent_pressure": true,
+          "displacement_m3": 5.0e-5,
+          "speed_hz": 50.0,
+          "volumetric_efficiency": 0.92
+        },
+        {
+          "type": "Condenser",
+          "name": "cond",
+          "ua": 2200.0,
+          "emergent_pressure": true,
+          "subcooling_k": 5.0,
+          "secondary_fluid": "Water",
+          "dp_model": "msh",
+          "tube_length_m": 6.0,
+          "tube_diameter_m": 0.0095,
+          "n_parallel_tubes": 2
+        },
+        {
+          "type": "IsenthalpicExpansionValve",
+          "name": "exv",
+          "t_evap_k": 278.15,
+          "emergent_pressure": true
+        },
+        {
+          "type": "FloodedEvaporator",
+          "name": "evap",
+          "ua": 9000.0,
+          "refrigerant": "R134a",
+          "secondary_fluid": "Water",
+          "quality_control": false
+        },
+        {
+          "type": "BrineSource",
+          "name": "cond_water_in",
+          "fluid": "Water",
+          "p_set_bar": 2.0,
+          "t_set_c": 30.0,
+          "m_flow_kg_s": 0.45,
+          "fix_pressure": false,
+          "fix_temperature": true,
+          "fix_mass_flow": true
+        },
+        {
+          "type": "BrineSink",
+          "name": "cond_water_out",
+          "fluid": "Water",
+          "p_back_bar": 2.0,
+          "fix_pressure": true
+        },
+        {
+          "type": "BrineSource",
+          "name": "evap_water_in",
+          "fluid": "Water",
+          "p_set_bar": 3.0,
+          "t_set_c": 12.0,
+          "m_flow_kg_s": 0.55,
+          "fix_pressure": false,
+          "fix_temperature": true,
+          "fix_mass_flow": false
+        },
+        {
+          "type": "BrineSink",
+          "name": "evap_water_out",
+          "fluid": "Water",
+          "p_back_bar": 3.0,
+          "t_set_c": 7.0,
+          "fix_pressure": true,
+          "fix_temperature": true
+        }
+      ],
+      "edges": [
+        { "from": "comp:outlet", "to": "cond:inlet" },
+        { "from": "cond:outlet", "to": "exv:inlet" },
+        { "from": "exv:outlet", "to": "evap:inlet" },
+        { "from": "evap:outlet", "to": "comp:inlet" },
+        { "from": "cond_water_in:outlet", "to": "cond:secondary_inlet" },
+        { "from": "cond:secondary_outlet", "to": "cond_water_out:inlet" },
+        { "from": "evap_water_in:outlet", "to": "evap:secondary_inlet" },
+        { "from": "evap:secondary_outlet", "to": "evap_water_out:inlet" }
+      ]
+    }
+  ],
+  "solver": {
+    "strategy": "newton",
+    "max_iterations": 300,
+    "tolerance": 1e-6
+  }
+}