refactor(frontend): rename '团队上级/下级' to '团队上/下贡献值'

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

frontend/mining-app/lib/presentation/pages/contribution/contribution_page.dart

@@ -87,7 +87,7 @@ class ContributionPage extends ConsumerWidget {
                           // 贡献值明细（三类汇总）
                           _buildContributionDetailCard(context, ref, contribution, isLoading),
                           const SizedBox(height: 16),
-                          // 团队下级统计
+                          // 团队下贡献值统计
                           _buildTeamStatsCard(contribution, isLoading),
                           const SizedBox(height: 16),
                           // 贡献值失效倒计时
@@ -265,8 +265,8 @@ class ContributionPage extends ConsumerWidget {
       child: Row(
         children: [
           _buildStatColumn('个人贡献值', contribution?.personalContribution, isLoading, false, hideAmounts),
-          _buildStatColumn('团队下级', contribution?.teamLevelContribution, isLoading, true, hideAmounts),
+          _buildStatColumn('团队下贡献值', contribution?.teamLevelContribution, isLoading, true, hideAmounts),
-          _buildStatColumn('团队上级', contribution?.teamBonusContribution, isLoading, true, hideAmounts),
+          _buildStatColumn('团队上贡献值', contribution?.teamBonusContribution, isLoading, true, hideAmounts),
         ],
       ),
     );
@@ -424,7 +424,7 @@ class ContributionPage extends ConsumerWidget {
                 _buildDetailSummaryRow(
                   icon: Icons.groups_outlined,
                   iconColor: Colors.blue,
-                  title: '团队下级',
+                  title: '团队下贡献值',
                   subtitle: '引荐及间推用户参与产生的贡献值',
                   amount: contribution?.teamLevelContribution ?? '0',
                   hideAmounts: hideAmounts,
@@ -433,7 +433,7 @@ class ContributionPage extends ConsumerWidget {
                 _buildDetailSummaryRow(
                   icon: Icons.card_giftcard_outlined,
                   iconColor: Colors.purple,
-                  title: '团队上级',
+                  title: '团队上贡献值',
                   subtitle: '满足条件后获得的额外奖励贡献值',
                   amount: contribution?.teamBonusContribution ?? '0',
                   hideAmounts: hideAmounts,
@@ -541,7 +541,7 @@ class ContributionPage extends ConsumerWidget {
         crossAxisAlignment: CrossAxisAlignment.start,
         children: [
           const Text(
-            '团队下级统计',
+            '团队下贡献值统计',
             style: TextStyle(fontSize: 16, fontWeight: FontWeight.bold, color: _darkText),
           ),
           const SizedBox(height: 16),

frontend/mining-app/lib/presentation/pages/contribution/contribution_records_page.dart

@@ -101,9 +101,9 @@ class _ContributionRecordsListPageState extends ConsumerState<ContributionRecord
           const SizedBox(width: 8),
           _buildFilterChip('个人', ContributionSourceType.personal),
           const SizedBox(width: 8),
-          _buildFilterChip('团队下级', ContributionSourceType.teamLevel),
+          _buildFilterChip('团队下贡献值', ContributionSourceType.teamLevel),
           const SizedBox(width: 8),
-          _buildFilterChip('团队上级', ContributionSourceType.teamBonus),
+          _buildFilterChip('团队上贡献值', ContributionSourceType.teamBonus),
         ],
       ),
     );
@@ -388,12 +388,12 @@ class _ContributionRecordsListPageState extends ConsumerState<ContributionRecord
         textColor = _orange;
         break;
       case ContributionSourceType.teamLevel:
-        label = '团队下级';
+        label = '团队下贡献值';
         bgColor = Colors.blue.withOpacity(0.1);
         textColor = Colors.blue;
         break;
       case ContributionSourceType.teamBonus:
-        label = '团队上级';
+        label = '团队上贡献值';
         bgColor = Colors.purple.withOpacity(0.1);
         textColor = Colors.purple;
         break;

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

@@ -89,7 +89,7 @@ class HelpCenterPage extends StatelessWidget {
               ),
               _FAQItem(
                 question: '团队收益如何计算？',
-                answer: '当您引荐的好友参与后，您将获得团队下级贡献值奖励。引荐的用户越多、参与数量越多，您的团队收益越高。',
+                answer: '当您引荐的好友参与后，您将获得团队下贡献值奖励。引荐的用户越多、参与数量越多，您的团队收益越高。',
               ),
             ]),
             const SizedBox(height: 16),

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

@@ -240,13 +240,13 @@ class ProfilePage extends ConsumerWidget {
           ),
           _buildDivider(),
           _buildStatItem(
-            '团队下级',
+            '团队下贡献值',
             stats?.unlockedLevelDepth.toString() ?? '0',
             isLoading,
           ),
           _buildDivider(),
           _buildStatItem(
-            '团队上级',
+            '团队上贡献值',
             '15',
             isLoading,
           ),