fix: Move selectedFrame definition before useEffect that references it

frontend/src/components/preview/preview-player.tsx

@@ -86,6 +86,8 @@ export function PreviewPlayer() {
         }
     }, [isPlaying, storyboard, setCurrentTime, setPlaying])
 
+    const selectedFrame = storyboard?.frames.find((f) => f.id === selectedFrameId)
+
     // Audio playback sync
     useEffect(() => {
         if (!audioRef.current) return
@@ -112,8 +114,6 @@ export function PreviewPlayer() {
         }
     }, [selectedFrameId])
 
-    const selectedFrame = storyboard?.frames.find((f) => f.id === selectedFrameId)
-
     // Calculate canvas size when entering inpainting mode
     useEffect(() => {
         if (isInpaintingMode && selectedFrame?.imagePath) {