前端增加3：4选择

components/create-studio.tsx

@@ -136,6 +136,7 @@ const seedreamOptimizeModeOptions = [
 const imageSizePresets = [
   { label: "1:1", width: 2048, height: 2048 },
   { label: "4:3", width: 2304, height: 1728 },
+  { label: "3:4", width: 1728, height: 2304 },
   { label: "16:9", width: 2560, height: 1440 },
   { label: "9:16", width: 1440, height: 2560 }
 ];