已完成用户APP首期功能开发

交付用户端首期页面、配套接口、后台资源及测试文档。用户APP构建、静态分析和三个管理后台构建通过；完整测试仍有2项失败，后端模型注释检查未通过，详见交付记录。

apps/user_app/test/domain/recharge_flow_test.dart

@@ -0,0 +1,121 @@
+// 功能描述：充值先存后发和未确认订单保留；版本：1.0.0。
+import 'package:flutter_test/flutter_test.dart';
+import 'package:user_app/data/services/recharge_draft_store.dart';
+import 'package:user_app/data/services/recharge_flow.dart';
+import 'package:user_app/data/services/api_client.dart';
+import 'package:user_app/domain/models/recharge.dart';
+import '../support/a1_fixture.dart';
+
+class _Store implements RechargeDraftStore {
+  PendingRecharge? value;
+  bool fail = false;
+  @override
+  Future<PendingRecharge?> read(String owner) async => value;
+  @override
+  Future<void> write(String owner, PendingRecharge draft) async {
+    if (fail) throw StateError('存储失败');
+    value = draft;
+  }
+
+  @override
+  Future<void> delete(String owner) async {
+    value = null;
+  }
+}
+
+class _Repo extends A1FixtureRepository {
+  _Repo(this.store);
+  final _Store store;
+  int calls = 0, status = 10;
+  int? queryError;
+  String owner = 'api#alice';
+  bool changeOwnerOnQuery = false;
+  @override
+  Future<String> rechargeDraftOwner() async => owner;
+  @override
+  Future<Map<String, Object?>> createRecharge({
+    required String request,
+    required int amount,
+    required String channel,
+    required String payType,
+  }) async {
+    expect(store.value?.request, request);
+    calls++;
+    throw StateError('响应丢失');
+  }
+
+  @override
+  Future<RechargeRecord> rechargeResult(String request) async {
+    if (changeOwnerOnQuery) owner = 'api#bob';
+    if (queryError != null) throw ApiException(queryError!, '查询失败');
+    return RechargeRecord(
+      identity: 'order',
+      number: request,
+      amount: 100,
+      status: status,
+      channel: 'alipay',
+      createdAt: DateTime(2026),
+    );
+  }
+}
+
+void main() {
+  test('明确不存在可原号重发，网络错误和账号切换不能发单', () async {
+    const draft = PendingRecharge(
+      request: 'request-1',
+      amount: 100,
+      channel: 'alipay',
+      payType: 'wap',
+    );
+    for (final code in [1112, 500]) {
+      final store = _Store()..value = draft;
+      final repo = _Repo(store)..queryError = code;
+      final flow = RechargeFlow(repo, store);
+      await expectLater(
+        flow.create(draft),
+        code == 1112
+            ? throwsStateError
+            : throwsA(isA<ApiException>().having((e) => e.code, '错误码', 500)),
+      );
+      expect(repo.calls, code == 1112 ? 1 : 0);
+      expect(store.value?.request, draft.request);
+    }
+    final store = _Store()..value = draft;
+    final repo = _Repo(store)..changeOwnerOnQuery = true;
+    await expectLater(RechargeFlow(repo, store).create(draft), throwsStateError);
+    expect(repo.calls, 0);
+    expect(store.value, isNotNull);
+  });
+  test('存储失败不发单，响应丢失保留原请求，到账后才清除', () async {
+    final store = _Store()..fail = true;
+    final repo = _Repo(store);
+    final flow = RechargeFlow(repo, store);
+    const draft = PendingRecharge(
+      request: 'request-1',
+      amount: 100,
+      channel: 'alipay',
+      payType: 'wap',
+    );
+    await expectLater(flow.create(draft), throwsStateError);
+    expect(repo.calls, 0);
+    store.fail = false;
+    await expectLater(flow.create(draft), throwsStateError);
+    expect(repo.calls, 1);
+    expect(store.value?.request, 'request-1');
+    await expectLater(
+      flow.create(
+        const PendingRecharge(request: 'request-2', amount: 100, channel: 'alipay', payType: 'wap'),
+      ),
+      throwsStateError,
+    );
+    expect(repo.calls, 1);
+    expect((await flow.recover())?.credited, isFalse);
+    expect(store.value, isNotNull);
+    repo.status = 23;
+    expect(await flow.create(draft), {'recharge_status': 23});
+    expect(repo.calls, 1);
+    expect(store.value, isNotNull);
+    expect((await flow.recover())?.credited, isTrue);
+    expect(store.value, isNull);
+  });
+}