chore(subtree): 更新子树脚本逻辑

update_subtree.bat

@@ -1,10 +1,9 @@
 @echo off
-git subtree pull --prefix=src/DjangoBlog DjangoBlog g3f-CodeEdit --squash && (
-    git add .
-    git commit -m "Update subtree"
-    git push
-    echo Done!
-) || (
-    echo Failed!
+echo Updating Git subtree...
+git subtree pull --prefix=src/DjangoBlog DjangoBlog g3f-CodeEdit --squash -m "update subtree"
+if %errorlevel% equ 0 (
+    echo Subtree update successful!
+) else (
+    echo Subtree update failed!
 )
 pause