fix delete connection POST request

src/static/webssh.js

@@ -776,16 +776,17 @@ function disconnectConnection(id) {
   }
 }
 
-function deleteConnection(id) {
+async function deleteConnection(id) {
   if (!confirm('Delete this connection?')) return;
   
   const conn = getConnection(id);
-  if (conn && conn.socket) {
-    conn.socket.close();
+  if (!await deleteConnectionFromServer(id)) {
+    alert('Failed to delete connection from server. Please try again.');
+    return;
   }
-  
+
+  if (conn && conn.socket) conn.socket.close();
   connections = connections.filter(c => c.id !== id);
-  deleteConnectionFromServer(id); // Delete from server storage
   autoSaveConnections();
   
   if (currentConnectionId === id) {