refactor: replace uni.showToast calls with shared toast

consolidates repeated toast display logic into a centralized utility, reducing code duplication and standardizing toast behavior across the codebase

src/pages/home/components/ChatMainList/index.vue

@@ -908,10 +908,7 @@ const sendMessage = async (message, isInstruct = false) => {
       if (!isWsConnected()) {
         // uni.hideLoading();
         setTimeout(() => {
-          // uni.showToast({
-          //   title: "连接服务器失败，请稍后重试",
-          //   icon: "none",
-          // });
+          showToast("连接服务器失败，请稍后重试");
         }, 100);
         return;
       }
@@ -920,20 +917,14 @@ const sendMessage = async (message, isInstruct = false) => {
       console.error("重新连接WebSocket失败:", error);
       // uni.hideLoading();
       setTimeout(() => {
-        // uni.showToast({
-        //   title: "连接服务器失败，请稍后重试",
-        //   icon: "none",
-        // });
+        showToast("连接服务器失败，请稍后重试");
       }, 100);
       return;
     }
   }
 
   if (isSessionActive.value) {
-    // uni.showToast({
-    //   title: "请等待当前回复完成",
-    //   icon: "none",
-    // });
+    showToast("请等待当前回复完成");
     return;
   }
   isSessionActive.value = true;