增加自动切换功能

src/views/Register.vue

@@ -798,6 +798,20 @@ const addScrollListener = (tabName) => {
         
         // 移除监听器，避免重复触发
         contentRef.removeEventListener('scroll', handleScroll);
+        
+        // 自动切换到下一个未读协议
+        setTimeout(() => {
+          const currentIndex = agreementTabs.value.findIndex(t => t.name === tabName);
+          const nextUnreadTab = agreementTabs.value.find((t, index) => index >= 0 && !t.viewed);
+          
+          if (nextUnreadTab) {
+            // 切换到下一个未读协议
+            activeTab.value = nextUnreadTab.name;
+            nextTick(() => {
+              addScrollListener(nextUnreadTab.name);
+            });
+          }
+        }, 500); // 延迟500ms切换，让用户看到已读状态
       }
     }
   };