fix(mobile): show a partial success message when local copies are kept

i18n/en.json

@@ -1459,6 +1459,7 @@
   "move_to": "Move to",
   "move_to_device_trash": "Move to device trash",
   "move_to_lock_folder_action_prompt": "{count} added to the locked folder",
+  "move_to_lock_folder_partial_prompt": "{count} added to the locked folder, {kept} local copies were kept",
   "move_to_locked_folder": "Move to locked folder",
   "move_to_locked_folder_confirmation": "These photos and video will be removed from all albums, and only viewable from the locked folder",
   "move_to_locked_folder_local_ios": "These items will be deleted from Photos, but will still be available on the Immich server. They will be in Recently Deleted for 30 days.",

mobile/lib/presentation/widgets/action_buttons/move_to_lock_folder_action_button.widget.dart

@@ -27,10 +27,12 @@ Future<void> performMoveToLockFolderAction(BuildContext context, WidgetRef ref,
 
   ref.read(multiSelectProvider.notifier).reset();
 
-  final successMessage = 'move_to_lock_folder_action_prompt'.t(
-    context: context,
-    args: {'count': result.count.toString()},
-  );
+  final successMessage = result.failedCount > 0
+      ? 'move_to_lock_folder_partial_prompt'.t(
+          context: context,
+          args: {'count': result.count.toString(), 'kept': result.failedCount.toString()},
+        )
+      : 'move_to_lock_folder_action_prompt'.t(context: context, args: {'count': result.count.toString()});
 
   if (context.mounted) {
     ImmichToast.show(

mobile/lib/providers/infrastructure/action.provider.dart

@@ -201,7 +201,7 @@ class ActionNotifier extends Notifier<void> {
 
     try {
       final deletedCount = await _service.moveToLockFolder(ids, localIds);
-      return ActionResult(count: ids.length, success: deletedCount == localIds.length);
+      return ActionResult(count: ids.length, success: true, failedCount: localIds.length - deletedCount);
     } catch (error, stack) {
       _logger.severe('Failed to move assets to lock folder', error, stack);
       return ActionResult(count: ids.length, success: false, error: error.toString());

mobile/test/providers/infrastructure/action_provider_test.dart

@@ -138,18 +138,19 @@ void main() {
       return result;
     }
 
-    testWidgets('reports failure when local deletion is cancelled', (tester) async {
+    testWidgets('keeps success and reports kept local copies when the OS delete is declined', (tester) async {
       final asset = _asset.copyWith(localId: 'local-owned');
       container.read(multiSelectProvider.notifier).selectAsset(asset);
       when(() => actionService.moveToLockFolder(any(), any())).thenAnswer((_) async => 0);
 
       final result = await runAction(tester);
 
-      expect(result?.success, isFalse);
+      expect(result?.success, isTrue);
+      expect(result?.failedCount, 1);
       verify(() => actionService.moveToLockFolder(['asset-1'], ['local-owned'])).called(1);
     });
 
-    testWidgets('reports failure when only some local copies are deleted', (tester) async {
+    testWidgets('reports kept local copies when only some are deleted', (tester) async {
       final first = _asset.copyWith(localId: 'local-1');
       final second = _asset.copyWith(id: 'asset-2', localId: 'local-2', checksum: 'checksum-2');
       container.read(multiSelectProvider.notifier)
@@ -159,7 +160,8 @@ void main() {
 
       final result = await runAction(tester);
 
-      expect(result?.success, isFalse);
+      expect(result?.success, isTrue);
+      expect(result?.failedCount, 1);
     });
 
     testWidgets('deletes only owned local copies from a mixed selection', (tester) async {