Refactor: Move image display into PhotoPrintAreaField component

- Move current image display from parent edit page into PhotoPrintAreaField
- Allows component to control visibility based on client-side removal state
- Image now properly disappears when Remove button is clicked
- Both front and back photo sections now managed entirely by component
- Verified: Remove button works, image disappears immediately, persists to database

src/components/PhotoPrintAreaField.tsx

@@ -102,6 +102,14 @@ export default function PhotoPrintAreaField({
 
   return (
     <div>
+      {currentImageUrl && !showPrintAreaEditor && (
+        <div className="mb-3 flex items-center gap-3">
+          {/* eslint-disable-next-line @next/next/no-img-element */}
+          <img src={currentImageUrl} alt="Product preview" className="h-20 w-20 border border-line object-contain" />
+          <p className="text-xs text-muted">Current photo. Upload a new one below to replace it.</p>
+        </div>
+      )}
+
       {!currentImageUrl || !showPrintAreaEditor ? (
         <>
           <input