从班次信息管理的排课按钮进排课窗口，刷新页面信息

frontend/src/views/teachBusiness/schedulingWindow/index.vue

@@ -794,6 +794,15 @@ export default {
       return this.candidateTeams.filter(t => !used.includes(t.xydbh))
     }
   },
+  watch: {
+    // 页面已被缓存/已打开时，路由 query 仍会更新——同步到当前班次学期并重新加载视图
+    '$route.query.xydxqbh'(val) {
+      if (val && val !== this.xydxqbh) {
+        this.xydxqbh = val
+        this.loadView()
+      }
+    }
+  },
   created() {
     if (this.$route.query && this.$route.query.xydxqbh) {
       this.xydxqbh = this.$route.query.xydxqbh