fix: truncate context logic

Plugins/ZShell/Llm/chat.cpp

@@ -40,7 +40,6 @@ Chat::Chat(QObject* parent)
 	});
 
 	connect(m_client, &LlmClient::busyChanged, this, [this]() {
-		// A fresh run supersedes the previous error.
 		if (m_client->busy() && !m_lastError.isEmpty()) {
 			m_lastError.clear();
 			Q_EMIT lastErrorChanged();
@@ -161,6 +160,10 @@ void Chat::refreshModels() {
 	m_client->refreshModels();
 }
 
+void Chat::refreshFromServer() {
+	m_client->refreshFromServer();
+}
+
 void Chat::selectModel(const QString& id) {
 	if (id.isEmpty()) return;
 	m_client->setModel(id);