fix: align mechanical dynamic port validation

app/simulation/components/amesim/mechanical/translational.py

@@ -1129,14 +1129,29 @@ class AmesimLmechn1(AlgebraicComponent):
                 raise ValueError(f"LMECHN1 {integer_name} must be an integer.")
         return cls(name=name, medium=medium, v1=parameters["v1"], sum=parameters["sum"])
 
-    @property
-    def active_ports(self) -> tuple[str, ...]:
-        return tuple(f"port_{index}" for index in range(1, self.v1 + 2))
+    @classmethod
+    def active_port_definitions_for_parameters(
+        cls,
+        parameters: Mapping[str, float],
+    ) -> tuple[PortDefinition, ...]:
+        right_port_count = float(parameters["v1"])
+        if not right_port_count.is_integer():
+            raise ValueError("LMECHN1 v1 must be an integer.")
+        count = int(right_port_count)
+        if count < 1 or count > 20:
+            raise ValueError("LMECHN1 v1 must be between 1 and 20.")
+        return cls.PORTS[: count + 1]
 
     @property
     def active_port_definitions(self) -> tuple[PortDefinition, ...]:
         return self.PORTS[: self.v1 + 1]
 
+    @property
+    def active_ports(self) -> tuple[str, ...]:
+        return tuple(
+            definition.name for definition in self.active_port_definitions
+        )
+
     @property
     def reference_port_name(self) -> str:
         return f"port_{self.v1 + 1}"