tune updating script

HiNC-update.bat

@@ -4,6 +4,15 @@ set "remoteRepo=https://HiNC-Public-Client:HiNCProduct20241117@superhightech-git
 "%git%" clone "%remoteRepo%" HiNC
 cd HiNC
 "%git%" remote set-url origin "%remoteRepo%" 
-"%git%" update-index --skip-worktree appsettings.json
-"%git%" reset --hard && "%git%" pull
+rem 僅保留 appsettings.json，本次更新其餘內容均以遠端為準
+set "APP_FILE=appsettings.json"
+set "APP_BAK=%~dp0appsettings.json.bak"
+
+if exist "%APP_FILE%" copy /Y "%APP_FILE%" "%APP_BAK%"
+
+"%git%" fetch --all
+"%git%" reset --hard origin/master
+"%git%" clean -fd
+
+if exist "%APP_BAK%" copy /Y "%APP_BAK%" "%APP_FILE%"
 cd ..