Function handleAddCustomServer

app/src/components/AppHeader.tsx:399–403

(address: string)

  // Custom server handlers
  const handleAddCustomServer = (address: string) => {
    const updated = addCustomServer(address);
    setCustomServers(updated);
    fetchModels();
  };

  const handleRemoveCustomServer = (address: string) => {
    const updated = removeCustomServer(address);