refactor(frontend): replace all '直推' with '引荐'

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

frontend/mining-app/lib/data/datasources/remote/referral_remote_datasource.dart

@@ -9,7 +9,7 @@ abstract class ReferralRemoteDataSource {
     required String accountSequence,
   });
 
-  /// 获取指定用户的直推列表（用于伞下树懒加载）
+  /// 获取指定用户的引荐列表（用于伞下树懒加载）
   Future<DirectReferralsResponse> getUserDirectReferrals({
     required String accountSequence,
     int limit = 100,
@@ -50,7 +50,7 @@ class ReferralRemoteDataSourceImpl implements ReferralRemoteDataSource {
     int offset = 0,
   }) async {
     try {
-      debugPrint('获取用户直推列表: accountSequence=$accountSequence');
+      debugPrint('获取用户引荐列表: accountSequence=$accountSequence');
       final response = await client.get(
         ApiEndpoints.teamDirectReferrals(accountSequence),
         queryParameters: {
@@ -61,13 +61,13 @@ class ReferralRemoteDataSourceImpl implements ReferralRemoteDataSource {
 
       if (response.statusCode == 200) {
         final data = response.data as Map<String, dynamic>;
-        debugPrint('用户直推列表获取成功: total=${data['total']}');
+        debugPrint('用户引荐列表获取成功: total=${data['total']}');
         return DirectReferralsResponse.fromJson(data);
       }
 
-      throw Exception('获取用户直推列表失败');
+      throw Exception('获取用户引荐列表失败');
     } catch (e) {
-      debugPrint('获取用户直推列表失败: $e');
+      debugPrint('获取用户引荐列表失败: $e');
       rethrow;
     }
   }

frontend/mining-app/lib/data/models/referral_model.dart

@@ -22,7 +22,7 @@ class ReferralInfoResponse {
   }
 }
 
-/// 直推成员信息
+/// 引荐成员信息
 class DirectReferralInfo {
   final String accountSequence;
   final int personalPlantingCount;
@@ -46,7 +46,7 @@ class DirectReferralInfo {
   }
 }
 
-/// 直推列表响应
+/// 引荐列表响应
 class DirectReferralsResponse {
   final List<DirectReferralInfo> referrals;
   final int total;

frontend/mining-app/lib/domain/entities/contribution.dart

@@ -27,7 +27,7 @@ class Contribution extends Equatable {
   final String totalContribution;
   /// 是否已参与
   final bool hasAdopted;
-  /// 直推参与用户数
+  /// 引荐参与用户数
   final int directReferralAdoptedCount;
   /// 已解锁层级深度
   final int unlockedLevelDepth;

frontend/mining-app/lib/domain/entities/contribution_record.dart

@@ -3,7 +3,7 @@ import 'package:equatable/equatable.dart';
 /// 贡献值来源类型
 enum ContributionSourceType {
   personal,   // 个人 - 参与
-  teamLevel,  // 团队层级 - 直推/间推奖励
+  teamLevel,  // 团队层级 - 引荐/间推奖励
   teamBonus,  // 团队奖励 - 额外奖励
 }
 
@@ -48,7 +48,7 @@ class ContributionRecord extends Equatable {
         return '参与';
       case ContributionSourceType.teamLevel:
         if (levelDepth == 1) {
-          return '直推奖励';
+          return '引荐奖励';
         }
         return '团队奖励($levelDepth级)';
       case ContributionSourceType.teamBonus:

frontend/mining-app/lib/presentation/pages/profile/team_page.dart

@@ -207,7 +207,7 @@ class _TeamPageState extends ConsumerState<TeamPage> {
           ),
           _buildDivider(),
           _buildStatItem(
-            '直推人数',
+            '引荐人数',
             '${_rootNode?.directReferralCount ?? 0} 人',
             Icons.person_add,
           ),

frontend/mining-app/lib/presentation/providers/profile_providers.dart

@@ -10,7 +10,7 @@ class UserStats {
   /// 是否已参与
   final bool hasAdopted;
 
-  /// 直推参与用户数
+  /// 引荐参与用户数
   final int directReferralAdoptedCount;
 
   /// 已解锁层级深度（可理解为团队层数）
@@ -47,7 +47,7 @@ class UserStats {
     return 'V$unlockedBonusTiers';
   }
 
-  /// 参与数量（简化展示直推数）
+  /// 参与数量（简化展示引荐数）
   int get adoptionCount => hasAdopted ? 1 : 0;
 
   /// 团队人数估算（基于已解锁层级）

frontend/mining-app/lib/presentation/widgets/team_tree_widget.dart

@@ -480,8 +480,8 @@ class _NodeDetailsSheet extends StatelessWidget {
           _buildDetailRow('团队参与', '${node.teamPlantingCount} 棵'),
           const SizedBox(height: 12),
 
-          // 直推人数
-          _buildDetailRow('直推人数', '${node.directReferralCount} 人'),
+          // 引荐人数
+          _buildDetailRow('引荐人数', '${node.directReferralCount} 人'),
           const SizedBox(height: 24),
 
           // 操作按钮