现有组件功能与Amesim组件比较对齐，补全功能；仿真服务启动环境检测，旧版json工程文件适配读取

app/simulation/native_codegen/compiler.py

@@ -74,11 +74,16 @@ def compile_native_program(network: SimulationNetwork) -> NativeProgram:
     network.validate_port_supplies()
     from .extended import catalog_contracts
     contracts = catalog_contracts()
+    from app.simulation.components.amesim.semantics import validate_numerical_semantics
     for component in network.components.values():
         if type(component) is not contracts.get(component.model_type):
             raise NativeCapabilityError(f'{component.name}: no native contract for {component.model_type}')
         if component.MODEL_VERSION != SUPPORTED_VERSIONS.get(component.model_type):
             raise NativeCapabilityError(f'{component.name}: native kernel version does not match the component contract')
+        try:
+            validate_numerical_semantics(component)
+        except ValueError as exc:
+            raise NativeCapabilityError(str(exc)) from exc
     # Preserve the compact, verified schedule for its supported topology.
     # Both paths emit C; this never falls back to Python numerical execution.
     try:
@@ -258,9 +263,11 @@ def _compile_storage_anchored_program(network: SimulationNetwork) -> NativeProgr
             put(c, "dvol", f"{get(c, 'vol')} <= {_number(c.cvol0 / 100)} ? 0.0 : ({rate})")
             volume, rate = get(c, "vol"), get(c, "dvol")
         volume_expressions[c.name] = (volume, rate)
-        # Match the Python constructor: m/U use configured storage volume;
-        # connected moving volumes subsequently change recovered p/T.
-        initial_volume = max(base, c.cvol0 / 100) if c.model_type == "amesim_pnch012" else base
+        # p0/T0 refer to the complete connected volume at the initial positions.
+        initial_volume = base
+        if c.model_type == "amesim_pnch012":
+            initial_volume += sum(p.effective_area * (p.x0 + mass_at(p, "port_5").x0 - mass_at(p, "port_4").x0) for p in connected)
+            initial_volume = max(initial_volume, c.cvol0 / 100)
         init.append(f"if (!native_gas_init({_number(c.p0)}, {_number(c.T0)}, {_number(initial_volume)}, &y[{si(c, 'm')}])) return 0;")
         lines.append(f"NativeGas gas_{gi};")
         lines.append(f"if (!native_gas_context(properties, y[{si(c, 'm')}], y[{si(c, 'U')}], {volume}, &gas_{gi})) return 0;")