Hide the hover magnifier while dragging a card to arrange.

web/src/components/CardView.tsx

@@ -15,6 +15,9 @@ interface Props {
   dead?: boolean
   // preview marks the floating magnified copy so it doesn't magnify itself.
   preview?: boolean
+  // noMagnify suppresses the hover magnifier (e.g. while this card is being
+  // dragged, so the frozen preview copy doesn't linger over the drag ghost).
+  noMagnify?: boolean
 }
 
 // CardView renders one physical card: pets get a power badge and a colored
@@ -30,6 +33,7 @@ export function CardView({
   damage = 0,
   dead,
   preview,
+  noMagnify,
 }: Props) {
   // Hover magnifier: show a large floating copy beside the cursor. The
   // preview copy itself opts out so it can't recurse.
@@ -49,7 +53,7 @@ export function CardView({
 
   // Place the magnified preview near the cursor, clamped into the viewport.
   const previewEl =
-    hover && !preview
+    hover && !preview && !noMagnify
       ? createPortal(
           <div
             className="card-magnify"