feat: 迁入 MiGu.Server、平台前端与车辆列表 reflection 回退

从 Simple-FR 拆出 Platform.Server 并重命名为 MiGu.Server；frontends 源码与构建脚本迁入本仓库。地图监控在 projection/cars 失败或为空时回退 reflection 车辆列表；Simple 仓库已移除旧 Platform.Server。

Co-authored-by: Cursor <cursoragent@cursor.com>

build-platform-frontend.bat

@@ -0,0 +1,92 @@
+@echo off
+chcp 65001 >nul 2>nul
+setlocal enableextensions
+
+rem ============================================================================
+rem  Migu2.0 platform frontend build (sync to MiGu.Server\wwwroot)
+rem ----------------------------------------------------------------------------
+rem  Usage:
+rem    build-platform-frontend.bat [--reinstall] [--npm | --pnpm] [--no-start]
+rem ============================================================================
+
+set "ROOT=%~dp0"
+set "FE_ROOT=%ROOT%frontends"
+set "FE_APP=%ROOT%frontends\apps\simple-platform-vue"
+set "DEST=%ROOT%MiGu.Server\wwwroot"
+set "MIGU_BAT=%ROOT%MiGu.Server\build-and-run.bat"
+
+set "NEED_INSTALL=0"
+set "FORCE_PM="
+set "START_MODE=platform"
+
+:argloop
+if "%~1"=="" goto argdone
+if /I "%~1"=="--reinstall" set "NEED_INSTALL=1"
+if /I "%~1"=="--npm" set "FORCE_PM=npm"
+if /I "%~1"=="--pnpm" set "FORCE_PM=pnpm"
+if /I "%~1"=="--no-start" set "START_MODE=none"
+shift
+goto argloop
+:argdone
+
+set "PM=%FORCE_PM%"
+if "%PM%"=="" (
+  where pnpm >nul 2>nul
+  if not errorlevel 1 set "PM=pnpm"
+)
+if "%PM%"=="" set "PM=npm"
+
+echo ============================================================
+echo  Migu2.0 platform frontend build
+echo    workspace : %FE_ROOT%
+echo    wwwroot   : %DEST%
+echo    pm        : %PM%
+echo ============================================================
+
+if not exist "%FE_ROOT%\package.json" (
+  echo [ERROR] Missing %FE_ROOT%\package.json
+  exit /b 1
+)
+
+pushd "%FE_ROOT%"
+if errorlevel 1 exit /b 1
+
+if not exist "node_modules" set "NEED_INSTALL=1"
+if "%NEED_INSTALL%"=="1" (
+  echo [1/3] %PM% install ...
+  call %PM% install
+  if errorlevel 1 ( popd & exit /b 1 )
+) else (
+  echo [1/3] node_modules exists, skip install. Use --reinstall to force.
+)
+
+echo [2/3] %PM% --filter simple-platform-vue build ...
+if /I "%PM%"=="pnpm" (
+  call pnpm --filter simple-platform-vue build
+) else (
+  pushd "%FE_APP%"
+  call npm run build
+  popd
+)
+if errorlevel 1 ( popd & exit /b 1 )
+popd
+
+if not exist "%FE_APP%\dist\index.html" (
+  echo [ERROR] dist not found
+  exit /b 1
+)
+
+echo [3/3] robocopy dist to wwwroot ...
+if not exist "%DEST%" mkdir "%DEST%"
+robocopy "%FE_APP%\dist" "%DEST%" /MIR /NFL /NDL /NJH /NJS /NP
+set "RC=%ERRORLEVEL%"
+if %RC% GEQ 8 exit /b %RC%
+
+echo Done: %DEST%
+if /I "%START_MODE%"=="none" exit /b 0
+if not exist "%MIGU_BAT%" (
+  echo [WARN] Missing %MIGU_BAT%
+  exit /b 0
+)
+start "" cmd /k "%MIGU_BAT%"
+exit /b 0