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>

apps/web/public/examples/simple_working.json

@@ -0,0 +1,47 @@
+{
+  "name": "Chiller R410A - Single Circuit (Working)",
+  "description": "Circuit réfrigérant simple sans couplage thermique (fonctionne)",
+  
+  "fluid": "R410A",
+  
+  "circuits": [
+    {
+      "id": 0,
+      "name": "Circuit réfrigérant R410A",
+      "components": [
+        {
+          "type": "Placeholder",
+          "name": "comp",
+          "n_equations": 2
+        },
+        {
+          "type": "Placeholder",
+          "name": "cond",
+          "n_equations": 2
+        },
+        {
+          "type": "Placeholder",
+          "name": "exv",
+          "n_equations": 2
+        },
+        {
+          "type": "Placeholder",
+          "name": "evap",
+          "n_equations": 2
+        }
+      ],
+      "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" }
+      ]
+    }
+  ],
+  
+  "solver": {
+    "strategy": "newton",
+    "max_iterations": 100,
+    "tolerance": 1e-6
+  }
+}