claude refactorings, flutter best practices, platform dependent changes, general cleanup

lib/widget/file_pick.dart

@@ -1,29 +1,19 @@
-
 import 'package:file_picker/file_picker.dart';
 import 'package:image_picker/image_picker.dart';
 
 class FilePick {
   static final _picker = ImagePicker();
 
-  static Future<XFile?> galleryPick() async {
-    final pickedImage = await _picker.pickImage(source: ImageSource.gallery);
-    if (pickedImage != null) {
-      return pickedImage;
-    }
-    return null;
-  }
-
   static Future<List<XFile>?> multipleGalleryPick() async {
     final pickedImages = await _picker.pickMultiImage();
-    if(pickedImages.isNotEmpty) {
-      return pickedImages;
-    }
-    return null;
+    return pickedImages.isNotEmpty ? pickedImages : null;
   }
 
+  static Future<XFile?> cameraPick() => _picker.pickImage(source: ImageSource.camera);
+
   static Future<List<String>?> documentPick() async {
-    var result = await FilePicker.platform.pickFiles(allowMultiple: true);
-    var paths = result?.files.nonNulls.map((e) => e.path).toList();
+    final result = await FilePicker.pickFiles(allowMultiple: true);
+    final paths = result?.files.nonNulls.map((e) => e.path).toList();
     return paths?.nonNulls.toList();
   }
 }