fix: auto-save chat controls params on change

Author: Algorithm5838

src/lib/components/chat/Chat.svelte

@@ -175,6 +175,16 @@
 	let chatFiles = [];
 	let files = [];
 	let params = {};
+	let oldParams = {};
+	let paramsDebounceTimer: ReturnType<typeof setTimeout> | null = null;
+
+	$: if (!equal(params, oldParams)) {
+		oldParams = structuredClone(params);
+		if (!loading && !$temporaryChatEnabled && $chatId) {
+			if (paramsDebounceTimer) clearTimeout(paramsDebounceTimer);
+			paramsDebounceTimer = setTimeout(saveParamsHandler, 500);
+		}
+	}
 
 	$: if (chatIdProp) {
 		navigateHandler();
@@ -189,6 +199,11 @@
 
 		loading = true;
 
+		if (paramsDebounceTimer) {
+			clearTimeout(paramsDebounceTimer);
+			paramsDebounceTimer = null;
+		}
+
 		prompt = '';
 		messageInput?.setText('');
 
@@ -2723,6 +2738,14 @@
 		return _chatId;
 	};
 
+	const saveParamsHandler = async () => {
+		const _chatId = $chatId;
+		if (!_chatId || $temporaryChatEnabled || loading) return;
+		await updateChatById(localStorage.token, _chatId, {
+			params: params
+		});
+	};
+
 	const saveChatHandler = async (_chatId, history) => {
 		if ($chatId == _chatId) {
 			if (!$temporaryChatEnabled) {