enh: preserve input

src/lib/components/chat/Chat.svelte

@@ -131,10 +131,29 @@
 	$: if (chatIdProp) {
 		(async () => {
 			console.log(chatIdProp);
+
+			prompt = '';
+			files = [];
+			selectedToolIds = [];
+			webSearchEnabled = false;
+
+			loaded = false;
+
 			if (chatIdProp && (await loadChat())) {
 				await tick();
 				loaded = true;
 
+				if (localStorage.getItem(`chat-input-${chatIdProp}`)) {
+					try {
+						const input = JSON.parse(localStorage.getItem(`chat-input-${chatIdProp}`));
+
+						prompt = input.prompt;
+						files = input.files;
+						selectedToolIds = input.selectedToolIds;
+						webSearchEnabled = input.webSearchEnabled;
+					} catch (e) {}
+				}
+
 				window.setTimeout(() => scrollToBottom(), 0);
 				const chatInput = document.getElementById('chat-input');
 				chatInput?.focus();
@@ -390,6 +409,21 @@
 			}
 		}
 
+		if (localStorage.getItem(`chat-input-${chatIdProp}`)) {
+			try {
+				const input = JSON.parse(localStorage.getItem(`chat-input-${chatIdProp}`));
+				prompt = input.prompt;
+				files = input.files;
+				selectedToolIds = input.selectedToolIds;
+				webSearchEnabled = input.webSearchEnabled;
+			} catch (e) {
+				prompt = '';
+				files = [];
+				selectedToolIds = [];
+				webSearchEnabled = false;
+			}
+		}
+
 		showControls.subscribe(async (value) => {
 			if (controlPane && !$mobile) {
 				try {
@@ -2019,6 +2053,13 @@
 								transparentBackground={$settings?.backgroundImageUrl ?? false}
 								{stopResponse}
 								{createMessagePair}
+								onChange={(input) => {
+									if (input.prompt) {
+										localStorage.setItem(`chat-input-${$chatId}`, JSON.stringify(input));
+									} else {
+										localStorage.removeItem(`chat-input-${$chatId}`);
+									}
+								}}
 								on:upload={async (e) => {
 									const { type, data } = e.detail;
 

src/lib/components/chat/MessageInput.svelte

@@ -43,6 +43,7 @@
 
 	export let transparentBackground = false;
 
+	export let onChange: Function = () => {};
 	export let createMessagePair: Function;
 	export let stopResponse: Function;
 
@@ -62,6 +63,13 @@
 	export let selectedToolIds = [];
 	export let webSearchEnabled = false;
 
+	$: onChange({
+		prompt,
+		files,
+		selectedToolIds,
+		webSearchEnabled
+	});
+
 	let loaded = false;
 	let recording = false;