feat(import): enhance recipe creation by passing both markdown and image URL from import

flutter/lib/features/recipes/presentation/create_recipe_screen.dart

@@ -14,7 +14,14 @@ class CreateRecipeScreen extends ConsumerStatefulWidget {
   /// Optional markdown to pre-fill the input field, e.g. from import.
   final String? initialMarkdown;
 
-  const CreateRecipeScreen({super.key, this.initialMarkdown});
+  /// Optional image URL pre-filled from a quick-import result.
+  final String? initialImageUrl;
+
+  const CreateRecipeScreen({
+    super.key,
+    this.initialMarkdown,
+    this.initialImageUrl,
+  });
 
   @override
   ConsumerState<CreateRecipeScreen> createState() =>
@@ -143,6 +150,8 @@ class _CreateRecipeScreenState extends ConsumerState<CreateRecipeScreen> {
           if (servingsRaw != null) 'servings': servingsRaw,
           if (_parsed!.instructions != null)
             'instructions': _parsed!.instructions,
+          if (widget.initialImageUrl != null && widget.initialImageUrl!.isNotEmpty)
+            'imageUrl': widget.initialImageUrl,
           'ingredients': ingredients,
         },
         token: token,