chore: remove deprecated flow_boundary and update docs to match new architecture

crates/cli/examples/chiller_screw_mchx_validate.json

@@ -0,0 +1,68 @@
+{
+  "name": "Chiller Screw Economisé MCHX - Validation",
+  "description": "Fichier de validation pour tester le parsing du config sans lancer la simulation",
+  "fluid": "R134a",
+  "circuits": [
+    {
+      "id": 0,
+      "components": [
+        {
+          "type": "ScrewEconomizerCompressor",
+          "name": "screw_0"
+        },
+        {
+          "type": "Placeholder",
+          "name": "splitter_0",
+          "n_equations": 1
+        },
+        {
+          "type": "MchxCondenserCoil",
+          "name": "mchx_0a",
+          "ua": 15000.0,
+          "coil_index": 0,
+          "t_air_celsius": 35.0
+        },
+        {
+          "type": "MchxCondenserCoil",
+          "name": "mchx_0b",
+          "ua": 15000.0,
+          "coil_index": 1,
+          "t_air_celsius": 35.0
+        },
+        {
+          "type": "Placeholder",
+          "name": "merger_0",
+          "n_equations": 1
+        },
+        {
+          "type": "Placeholder",
+          "name": "exv_0",
+          "n_equations": 2
+        },
+        {
+          "type": "FloodedEvaporator",
+          "name": "evap_0",
+          "ua": 20000.0,
+          "refrigerant": "R134a",
+          "secondary_fluid": "MEG",
+          "target_quality": 0.7
+        }
+      ],
+      "edges": [
+        { "from": "screw_0:outlet",   "to": "splitter_0:inlet" },
+        { "from": "splitter_0:out_a", "to": "mchx_0a:inlet" },
+        { "from": "splitter_0:out_b", "to": "mchx_0b:inlet" },
+        { "from": "mchx_0a:outlet",   "to": "merger_0:in_a" },
+        { "from": "mchx_0b:outlet",   "to": "merger_0:in_b" },
+        { "from": "merger_0:outlet",  "to": "exv_0:inlet" },
+        { "from": "exv_0:outlet",     "to": "evap_0:inlet" },
+        { "from": "evap_0:outlet",    "to": "screw_0:inlet" }
+      ]
+    }
+  ],
+  "solver": {
+    "strategy": "fallback",
+    "max_iterations": 100,
+    "tolerance": 1e-6
+  }
+}