完善 drawio 建模界面与仿真模型集成

PythonModels/core/state.py

@@ -0,0 +1,21 @@
+from __future__ import annotations
+
+from dataclasses import dataclass
+
+
+@dataclass
+class VolumeState:
+    """Primary dynamic state for rigid adiabatic control volumes."""
+
+    m: float
+    U: float
+
+    def as_vector(self) -> list[float]:
+        return [self.m, self.U]
+
+    @classmethod
+    def from_vector(cls, values: list[float]) -> "VolumeState":
+        if len(values) != 2:
+            raise ValueError("VolumeState requires exactly two values: [m, U].")
+        return cls(m=values[0], U=values[1])
+