feat: Safeguard gateway addition in EditServerModal by implementing error handling during state updates, ensuring robust server configuration management.

frontend/src/ServerManager.jsx

@@ -630,6 +630,8 @@ function ServerManager() {
     setTimeout(() => setSuccess(''), 3000);
   };
 
+  const gateways = Array.isArray(localServer.gateways) ? localServer.gateways : [];
+
   return (
     <>
       {error && (
@@ -1542,7 +1544,7 @@ function EditServerModal({ show, server, onChange, onSave, onClose }) {
                 <>
                   <div className="form-label">Шлюзы</div>
                   <div className="list-group list-group-flush border rounded mb-2">
-                    {(localServer.gateways || []).map((gw, idx) => (
+                    {gateways.map((gw, idx) => (
                       <div key={gw.id || idx} className="list-group-item">
                         <div className="row g-2 align-items-end">
                           <div className="col-12 col-md-4">
@@ -1634,6 +1636,7 @@ function EditServerModal({ show, server, onChange, onSave, onClose }) {
                     type="button"
                     className="btn btn-outline-primary btn-sm"
                   onClick={() => {
+                      try {
                         setLocalServer((prev) => {
                           const list = Array.isArray(prev?.gateways) ? prev.gateways : [];
                           const nextList = [...list, makeGateway({ primary: list.length === 0 })];
@@ -1641,6 +1644,9 @@ function EditServerModal({ show, server, onChange, onSave, onClose }) {
                           onChange && onChange(next);
                           return next;
                         });
+                      } catch (e) {
+                        console.error('Ошибка при добавлении шлюза в модалке редактирования', e);
+                      }
                     }}
                   >
                     <IconPlus className="icon" />