feat(app): 完成 P0 钱包解锁、下载落盘与手机号登录

test/download/download_controller_local_test.dart

@@ -0,0 +1,149 @@
+// Author: fruit.com.cn
+
+import 'package:flutter_test/flutter_test.dart';
+import 'package:fruitshorts/core/data/models/download_license.dart';
+import 'package:fruitshorts/core/data/models/download_policy.dart';
+import 'package:fruitshorts/core/data/repositories/download_repository.dart';
+import 'package:fruitshorts/core/data/services/download_controller.dart';
+import 'package:fruitshorts/core/data/services/download_storage.dart';
+
+void main() {
+  test('should_mark_episode_downloaded_and_report_progress_when_download_finishes',
+      () async {
+    final repository = _RecordingRepository(_license('ep-1'));
+    final storage = _FakeStorage();
+    final controller = DownloadController(repository, storage: storage);
+    await controller.load();
+
+    final result = await controller.startDownload('ep-1');
+
+    expect(result.ok, isTrue);
+    expect(controller.isDownloaded('ep-1'), isTrue);
+    expect(controller.localPathFor('ep-1'), 'file:///tmp/ep-1.mp4');
+    expect(repository.statuses, containsAll(['DOWNLOADING', 'COMPLETED']));
+  });
+
+  test('should_keep_local_file_when_backend_delete_fails', () async {
+    final repository = _RecordingRepository(_license('ep-1'));
+    final storage = _FakeStorage();
+    final controller = DownloadController(repository, storage: storage);
+    await controller.load();
+    await controller.startDownload('ep-1');
+    repository.failRemove = true;
+
+    final ok = await controller.remove('ep-1');
+
+    expect(ok, isFalse);
+    expect(controller.isDownloaded('ep-1'), isTrue);
+  });
+}
+
+DownloadLicense _license(String episodeId) => DownloadLicense(
+  licenseId: 'license-$episodeId',
+  dramaId: 'drama-1',
+  dramaTitle: 'The Signal',
+  episodeId: episodeId,
+  episodeNo: 1,
+  deviceId: 'device-1',
+  quality: 'AUTO',
+  playUrl: '/files/episode/ep-1.mp4?e=1&s=abc',
+  licenseKey: 'key',
+  status: 'ACTIVE',
+  grantedAt: DateTime(2026, 10, 19),
+  expireAt: DateTime(2026, 11, 18),
+  taskStatus: 'QUEUED',
+  progressPercent: 0,
+  downloadedBytes: 0,
+  totalBytes: 0,
+  errorMsg: '',
+);
+
+class _FakeStorage implements DownloadStorage {
+  final Set<String> files = {};
+
+  @override
+  Future<Map<String, String>> restore() async => {
+    for (final id in files) id: 'file:///tmp/$id.mp4',
+  };
+
+  @override
+  Future<String?> localPathFor(String episodeId) async =>
+      files.contains(episodeId) ? 'file:///tmp/$episodeId.mp4' : null;
+
+  @override
+  Future<DownloadedMedia> download({
+    required String episodeId,
+    required String url,
+    DownloadProgress? onProgress,
+  }) async {
+    onProgress?.call(50, 100);
+    onProgress?.call(100, 100);
+    files.add(episodeId);
+    return DownloadedMedia(
+      episodeId: episodeId,
+      filePath: 'file:///tmp/$episodeId.mp4',
+      bytes: 100,
+    );
+  }
+
+  @override
+  Future<void> delete(String episodeId) async => files.remove(episodeId);
+
+  @override
+  Future<void> clear() async => files.clear();
+}
+
+class _RecordingRepository implements DownloadRepository {
+  _RecordingRepository(this.license);
+
+  DownloadLicense license;
+  bool failRemove = false;
+  final List<String> statuses = [];
+
+  @override
+  Future<DownloadPolicy> fetchPolicy() async => const DownloadPolicy(
+    maxPerDevice: 20,
+    licenseDays: 30,
+    wifiOnly: false,
+    maxQuality: 'AUTO',
+    maxStorageBytes: 0,
+    used: 1,
+    remaining: 19,
+    expirePolicyText: '30 days',
+  );
+
+  @override
+  Future<List<DownloadLicense>> list() async => [license];
+
+  @override
+  Future<DownloadLicense> grant(String episodeId, {String? quality}) async =>
+      license;
+
+  @override
+  Future<void> updateSettings({bool? wifiOnly, String? maxQuality}) async {}
+
+  @override
+  Future<DownloadLicense> refreshUrl(String episodeId) async => license;
+
+  @override
+  Future<DownloadLicense> reportProgress(
+    String episodeId, {
+    String? deviceId,
+    String? status,
+    int? progressPercent,
+    int? downloadedBytes,
+    int? totalBytes,
+    String? errorMsg,
+  }) async {
+    if (status != null) statuses.add(status);
+    return license;
+  }
+
+  @override
+  Future<void> remove(String episodeId) async {
+    if (failRemove) throw StateError('remove failed');
+  }
+
+  @override
+  Future<int> clear() async => 0;
+}