完成求解器雅可比矩阵首轮优化，增加更新目录，整理了文档文件夹，增加了服务启动脚本

bat/start-all.bat

@@ -0,0 +1,40 @@
+@echo off
+setlocal EnableExtensions DisableDelayedExpansion
+
+title SystemSimulationApp Launcher
+
+set "BACKEND_SCRIPT=%~dp0start-backend.bat"
+set "FRONTEND_SCRIPT=%~dp0start-reactflow.bat"
+
+if not exist "%BACKEND_SCRIPT%" (
+  echo [ERROR] start-backend.bat was not found:
+  echo         %BACKEND_SCRIPT%
+  pause
+  exit /b 1
+)
+
+if not exist "%FRONTEND_SCRIPT%" (
+  echo [ERROR] start-reactflow.bat was not found:
+  echo         %FRONTEND_SCRIPT%
+  pause
+  exit /b 1
+)
+
+echo Starting FastAPI and ReactFlow in separate windows...
+
+set "LAUNCH_ERROR=0"
+ver >nul
+start "FastAPI - 127.0.0.1:8000" "%ComSpec%" /d /c call "%BACKEND_SCRIPT%"
+if errorlevel 1 set "LAUNCH_ERROR=1"
+ver >nul
+start "ReactFlow - 127.0.0.1:5173" "%ComSpec%" /d /c call "%FRONTEND_SCRIPT%"
+if errorlevel 1 set "LAUNCH_ERROR=1"
+
+if "%LAUNCH_ERROR%"=="1" (
+  echo.
+  echo [ERROR] One or more service windows could not be created.
+  pause
+  exit /b 1
+)
+
+exit /b 0