重构参赛队伍相关模型，更新API接口以支持队伍详情获取；

调整UI逻辑以使用新的数据结构，优化比赛信息展示；
更新构建脚本以支持新功能。

lib/features/competition_teams/model/model_competition_team.dart

@@ -42,44 +42,59 @@ class CompetitionMatchup {
   }
 }
 
+/// 参赛项目/组别列表项（来自 /api/events/device/item/group）
 class CompetitionTeamListItem {
   const CompetitionTeamListItem({
-    required this.id,
-    required this.eventName,
-    required this.itemName,
+    required this.eventId,
+    required this.itemId,
+    required this.name,
     required this.groupName,
-    required this.matchPlace,
-    required this.matchStartTime,
-    required this.matchEndTime,
-    required this.matchups,
-    this.completed = false,
+    this.matchStartTime = '',
+    this.matchEndTime = '',
+    this.matchups = const [],
   });
 
-  final String id;
-  final String eventName;
-  final String itemName;
+  final String eventId;
+  final String itemId;
+  final String name;
   final String groupName;
-  final String matchPlace;
   final String matchStartTime;
   final String matchEndTime;
+
+  /// 对阵明细暂未由列表接口返回，默认空
   final List<CompetitionMatchup> matchups;
-  final bool completed;
 
-  String get title => groupName.isEmpty ? itemName : '$itemName （$groupName）';
+  String get title => groupName.isEmpty ? name : '$name （$groupName）';
 
-  String get scheduleTime => '$matchStartTime-$matchEndTime';
+  String get scheduleTime {
+    if (matchStartTime.isEmpty && matchEndTime.isEmpty) return '';
+    if (matchStartTime.isNotEmpty && matchEndTime.isNotEmpty) {
+      return '$matchStartTime-$matchEndTime';
+    }
+    if (matchStartTime.isNotEmpty) return matchStartTime;
+    return matchEndTime;
+  }
+
+  factory CompetitionTeamListItem.fromJson(Map<String, dynamic> json) {
+    return CompetitionTeamListItem(
+      eventId: (json['eventId'] ?? '').toString(),
+      itemId: (json['itemId'] ?? '').toString(),
+      name: (json['name'] ?? '').toString(),
+      groupName: (json['groupName'] ?? '').toString(),
+      matchStartTime: (json['matchStartTime'] ?? '').toString(),
+      matchEndTime: (json['matchEndTime'] ?? '').toString(),
+    );
+  }
 
   CompetitionTeamListItem copyWith({List<CompetitionMatchup>? matchups}) {
     return CompetitionTeamListItem(
-      id: id,
-      eventName: eventName,
-      itemName: itemName,
+      eventId: eventId,
+      itemId: itemId,
+      name: name,
       groupName: groupName,
-      matchPlace: matchPlace,
       matchStartTime: matchStartTime,
       matchEndTime: matchEndTime,
       matchups: matchups ?? this.matchups,
-      completed: completed,
     );
   }
 }
@@ -98,4 +113,59 @@ class CompetitionTeamPageResult {
   final int pageSize;
 
   bool get hasMore => page * pageSize < total;
+
+  factory CompetitionTeamPageResult.fromJson(
+    dynamic json, {
+    required int page,
+    required int pageSize,
+  }) {
+    if (json is List) {
+      // 整表无分页：本页即全部，hasMore = false
+      final items = json
+          .whereType<Map>()
+          .map(
+            (item) => CompetitionTeamListItem.fromJson(
+              Map<String, dynamic>.from(item),
+            ),
+          )
+          .toList(growable: false);
+      final effectivePageSize = items.isEmpty ? pageSize : items.length;
+      return CompetitionTeamPageResult(
+        items: items,
+        total: items.length,
+        page: page,
+        pageSize: effectivePageSize,
+      );
+    }
+
+    if (json is Map) {
+      final map = Map<String, dynamic>.from(json);
+      final rawItems =
+          map['items'] ?? map['rows'] ?? map['list'] ?? map['records'];
+      final items = rawItems is List
+          ? rawItems
+                .whereType<Map>()
+                .map(
+                  (item) => CompetitionTeamListItem.fromJson(
+                    Map<String, dynamic>.from(item),
+                  ),
+                )
+                .toList(growable: false)
+          : const <CompetitionTeamListItem>[];
+      final total = (map['total'] as num?)?.toInt() ?? items.length;
+      return CompetitionTeamPageResult(
+        items: items,
+        total: total,
+        page: page,
+        pageSize: pageSize,
+      );
+    }
+
+    return CompetitionTeamPageResult(
+      items: const [],
+      total: 0,
+      page: page,
+      pageSize: pageSize,
+    );
+  }
 }