release: restore ZUPT and harden source-only 5.2.2

packaging/portable/zupt-gui.bat

@@ -0,0 +1,30 @@
+@echo off
+rem SPDX-License-Identifier: AGPL-3.0-or-later
+rem ZUPT GUI launcher for Windows (portable package).
+rem
+rem Requirements on the target machine:
+rem   * Python 3.9+
+rem   * PySide6 or PyQt6:   py -m pip install PySide6
+rem   * The ZUPT CLI: zupt.exe next to this file, or on PATH.
+rem
+rem If zupt.exe sits beside this launcher we pin it via ZUPT_BIN so the
+rem GUI drives the bundled CLI rather than any other copy on PATH.
+setlocal
+set "HERE=%~dp0"
+if exist "%HERE%zupt.exe" set "ZUPT_BIN=%HERE%zupt.exe"
+
+rem Prefer the py launcher, fall back to python on PATH.
+where py >nul 2>nul
+if %ERRORLEVEL%==0 (
+  py -3 "%HERE%zupt_gui.py" %*
+) else (
+  python "%HERE%zupt_gui.py" %*
+)
+set "RC=%ERRORLEVEL%"
+if not "%RC%"=="0" (
+  echo.
+  echo zupt-gui exited with code %RC%.
+  echo If you saw an import error, install the Qt binding:  py -m pip install PySide6
+  echo If the CLI was not found, put zupt.exe next to this launcher or on PATH.
+)
+endlocal & exit /b %RC%