add removal of chat sessions, auto title + icon, proper stick-to-bottom as response is streamed

Plugins/ZShell/Llm/chat.hpp

@@ -8,6 +8,8 @@
 #include <QStringList>
 #include <QtQml>
 
+#include <functional>
+
 #include "chatstore.hpp"
 
 class QQmlEngine;
@@ -76,6 +78,13 @@ class Chat : public QObject {
 	void updateTokenUsage(const QJsonObject& data);
 	static void trimHistory(ChatSession* session, int contextSize);
 
+	void shortRequest(
+		const QString& tag,
+		const QString& systemPrompt,
+		const QString& userText,
+		std::function<void(QString result)> onResult);
+	void requestTitle(const QString& chatId, const QString& userText);
+	void requestIcon(const QString& chatId, const QString& userText);
 	static QString titleFrom(const QString& content);
 	static QString completionsPath(const QString& endpoint, const QString& subpath);
 	static QString serverErrorMessage(