Merge PR #1536 into 2.0.0-beta.2

# Conflicts:
#	ui/flutter/test/widget_test.dart

ui/flutter/test/features/tasks/domain/task_record_test.dart

@@ -4,7 +4,7 @@ import 'package:gopeed/core/icons/gopeed_icons.dart';
 import 'package:gopeed/features/tasks/domain/task_record.dart';
 
 void main() {
-  api.Task buildTask(List<int> selection, int size) => api.Task.fromJson({
+  api.Task buildTask(List<int> selection, int size, {String? doneAt}) => api.Task.fromJson({
     'id': 'bt-selection',
     'name': 'bundle',
     'protocol': 'bt',
@@ -12,6 +12,7 @@ void main() {
     'uploading': false,
     'createdAt': '2026-01-01T00:00:00Z',
     'updatedAt': '2026-01-01T00:00:00Z',
+    'doneAt': doneAt,
     'meta': {
       'req': {'url': 'magnet:?xt=urn:btih:test'},
       'opts': {'path': '/downloads', 'selectFiles': selection},
@@ -43,6 +44,13 @@ void main() {
     expect(record.totalBytes, 60);
   });
 
+  test('completion time maps from api and stays null for legacy tasks', () {
+    final completed = TaskRecord.fromApi(buildTask([], 60, doneAt: '2026-01-02T03:04:05Z'));
+    expect(completed.doneAt, DateTime.parse('2026-01-02T03:04:05Z'));
+    final legacy = TaskRecord.fromApi(buildTask([], 60));
+    expect(legacy.doneAt, isNull);
+  });
+
   test('file names preserve hash and question mark characters for type detection', () {
     expect(
       taskFileTypeIcon('Slow English Podcast #2 _ Eating, Talking, and Learning Natural English.mp4'),

ui/flutter/test/widget_test.dart

@@ -4129,6 +4129,7 @@ void main() {
       remaining: '1 minute remaining',
       downloadDuration: const Duration(hours: 1, minutes: 2, seconds: 3),
       createdAt: DateTime(2026, 8, 27, 12, 34, 56),
+      doneAt: DateTime(2026, 8, 28, 1, 2, 3),
     );
 
     await tester.pumpWidget(
@@ -4199,7 +4200,14 @@ void main() {
     expect(find.text('50 B / 100 B'), findsNothing);
     expect(find.text('Created'), findsOneWidget);
     expect(find.text('2026-08-27 12:34:56'), findsOneWidget);
+    expect(find.text('Completed at'), findsOneWidget);
+    expect(find.text('2026-08-28 01:02:03'), findsOneWidget);
+    expect(
+      tester.getBottomLeft(find.text('2026-08-27 12:34:56')).dy,
+      lessThan(tester.getTopLeft(find.text('Completed at')).dy),
+    );
     final infoDivider = find.byKey(const ValueKey('task-details-info-divider'));
+    expect(tester.getBottomLeft(find.text('Completed at')).dy, lessThan(tester.getTopLeft(infoDivider).dy));
     expect(tester.getBottomLeft(find.text('Created')).dy, lessThan(tester.getTopLeft(infoDivider).dy));
     expect(tester.getBottomLeft(infoDivider).dy, lessThan(tester.getTopLeft(find.text('Download Link')).dy));
     expect(find.text('1 minute remaining'), findsNothing);
@@ -4261,6 +4269,30 @@ void main() {
     expect(find.text('—'), findsOneWidget);
   });
 
+  testWidgets('completed task details show a dash when no done time is recorded', (WidgetTester tester) async {
+    await _setTestSize(tester, const Size(900, 700));
+    final task = _taskRecord(
+      id: 'done-details',
+      name: 'done.zip',
+      status: TaskStatus.completed,
+      downloadDuration: const Duration(hours: 1, minutes: 2, seconds: 3),
+    );
+
+    await tester.pumpWidget(
+      ProviderScope(
+        child: shad.ShadcnApp(
+          theme: AppTheme.light(),
+          materialTheme: AppTheme.materialLight(),
+          home: TaskDetailsView(task: task, mobile: false, onOpenStorage: () {}, onUpdateUrl: (_) async {}),
+        ),
+      ),
+    );
+    await tester.pumpAndSettle();
+
+    expect(find.text('Completed at'), findsOneWidget);
+    expect(find.text('—'), findsOneWidget);
+  });
+
   testWidgets('failed task details omit the unavailable error reason', (WidgetTester tester) async {
     await _setTestSize(tester, const Size(900, 700));
     final task = TaskRecord(
@@ -6166,6 +6198,7 @@ TaskRecord _taskRecord({
   String? remaining,
   Duration? downloadDuration,
   DateTime? createdAt,
+  DateTime? doneAt,
   bool isFolder = false,
   Map<String, String> requestHeaders = const {},
 }) {
@@ -6186,6 +6219,7 @@ TaskRecord _taskRecord({
     remaining: remaining,
     downloadDuration: downloadDuration,
     createdAt: createdAt,
+    doneAt: doneAt,
     requestHeaders: requestHeaders,
   );
 }