避免预览容器变化重置缩放

自动适配仅在图片或逻辑尺寸变化时执行

通过尺寸引用保留初始视口兜底值

apps/ai-game-creator-shell/src/view/ui-editor/components/preview/PreviewWorkspace.tsx

@@ -55,6 +55,8 @@ export function PreviewWorkspace({
     viewportRef.current,
   );
   const [canvasSize, setCanvasSize] = useState({ width: 900, height: 640 });
+  const canvasSizeRef = useRef(canvasSize);
+  canvasSizeRef.current = canvasSize;
   const [spaceHeld, setSpaceHeld] = useState(false);
   const [renderMode, setRenderMode] =
     useState<UiEditorRenderMode>('editor-overlay');
@@ -152,18 +154,12 @@ export function PreviewWorkspace({
           height: logicalSize.height,
         },
         canvasSize: {
-          width: element?.clientWidth || canvasSize.width,
-          height: element?.clientHeight || canvasSize.height,
+          width: element?.clientWidth || canvasSizeRef.current.width,
+          height: element?.clientHeight || canvasSizeRef.current.height,
         },
       }),
     );
-  }, [
-    activeImageId,
-    canvasSize.height,
-    canvasSize.width,
-    logicalSize,
-    setViewport,
-  ]);
+  }, [activeImageId, logicalSize, setViewport]);
 
   const scaleViewportFromCenter = useCallback(
     (nextScale: number) => {