refactor(ServerManager): enhance actions layout and button styling for improved user experience and interaction

frontend/src/ServerManager.jsx

@@ -602,7 +602,7 @@ function ServerManager() {
           </span>
         }
         actions={
-          <>
+          <div className="d-flex flex-wrap align-items-center gap-2">
             <PageHeaderActions
               loading={loading}
               onRefresh={handleRefreshAll}
@@ -612,7 +612,7 @@ function ServerManager() {
               onSave={handleSaveChanges}
               disableSave={loading}
             />
-            <div className="mt-2 d-flex flex-wrap gap-2 justify-content-end">
+            <span className="vr d-none d-md-inline align-self-center" style={{ minHeight: '1.5rem' }} />
             <div className="btn-group" role="group" aria-label="Переключение режимов">
               <button
                 className={`btn ${activeTab === 'servers' ? 'btn-primary' : 'btn-outline-primary'}`}
@@ -639,7 +639,6 @@ function ServerManager() {
               <IconPlus size={16} className="me-1" /> Добавить
             </button>
           </div>
-          </>
         }
       />