前台競賽功能修復

lib/services/database-service.ts

@@ -1275,7 +1275,26 @@ export class CompetitionService {
   // 獲取所有競賽
   static async getAllCompetitions(): Promise<Competition[]> {
     const sql = 'SELECT * FROM competitions WHERE is_active = TRUE ORDER BY year DESC, month DESC';
-    return await db.query<Competition>(sql);
+    const competitions = await db.query<any>(sql);
+    
+    // 轉換字段名稱以匹配前端期望的格式
+    return competitions.map(competition => ({
+      ...competition,
+      startDate: competition.start_date,
+      endDate: competition.end_date,
+      evaluationFocus: competition.evaluation_focus,
+      maxTeamSize: competition.max_team_size,
+      isActive: competition.is_active,
+      createdAt: competition.created_at,
+      updatedAt: competition.updated_at,
+      // 添加默認的空數組，因為這些字段在競賽列表中不需要詳細數據
+      judges: [],
+      participatingApps: [],
+      participatingTeams: [],
+      participatingProposals: [],
+      rules: [],
+      awardTypes: []
+    }));
   }
 
   // 獲取競賽統計