完善 XML 通用仿真与结果查看

start-all.bat

@@ -0,0 +1,24 @@
+@echo off
+setlocal
+
+cd /d "%~dp0"
+title SystemSimulationApp Launcher
+
+if not exist "%~dp0start-backend.bat" (
+  echo [ERROR] start-backend.bat was not found.
+  pause
+  exit /b 1
+)
+
+if not exist "%~dp0start-reactflow.bat" (
+  echo [ERROR] start-reactflow.bat was not found.
+  pause
+  exit /b 1
+)
+
+echo Starting FastAPI and ReactFlow in separate windows...
+
+start "FastAPI - 127.0.0.1:8000" "%ComSpec%" /d /c call "%~dp0start-backend.bat"
+start "ReactFlow - 127.0.0.1:5173" "%ComSpec%" /d /c call "%~dp0start-reactflow.bat"
+
+exit /b 0