fix(select-event): 根据参赛类型过滤项目列表

- 单人赛只显示type=1的项目
- 集体赛只显示type=2的项目
- 修复Issue #5: 单人/集体比赛区分问题

src/pages/select-event/select-event.vue

@@ -39,19 +39,32 @@ export default {
   onLoad(options) {
     if (options.eventId) {
       this.eventId = options.eventId;
-      this.loadProjectList(options.eventId)
     }
     if (options.type) {
       this.type = options.type;
     }
+    // Load project list after type is set
+    if (this.eventId) {
+      this.loadProjectList(this.eventId)
+    }
   },
   methods: {
     /**
-     * 加载报名项目列表
+     * Load project list filtered by participation type
+     * @param {String} eventId Competition ID
      */
     async loadProjectList(eventId) {
       try {
-        const res = await competitionAPI.getProjectList({ competitionId: eventId })
+        const params = { competitionId: eventId }
+        
+        // Filter by participation type: single=1, team=2
+        if (this.type === 'single') {
+          params.type = 1
+        } else if (this.type === 'team') {
+          params.type = 2
+        }
+        
+        const res = await competitionAPI.getProjectList(params)
 
         let list = []
         if (res.records) {
@@ -60,7 +73,6 @@ export default {
           list = res
         }
 
-        // 数据映射
         this.projectList = list.map(item => ({
           id: item.id,
           name: item.name || item.projectName,