fix: preserve dates for chat imports

Co-Authored-By: conql <49243542+conql@users.noreply.github.com>

src/lib/components/chat/Chat.svelte

@@ -55,10 +55,7 @@
 
 	import { generateChatCompletion } from '$lib/apis/ollama';
 	import {
-		addTagById,
 		createNewChat,
-		deleteTagById,
-		deleteTagsById,
 		getAllTags,
 		getChatById,
 		getChatList,

src/lib/components/chat/Settings/Chats.svelte

@@ -6,11 +6,10 @@
 
 	import {
 		archiveAllChats,
-		createNewChat,
 		deleteAllChats,
 		getAllChats,
-		getAllUserChats,
-		getChatList
+		getChatList,
+		importChat
 	} from '$lib/apis/chats';
 	import { getImportOrigin, convertOpenAIChats } from '$lib/utils';
 	import { onMount, getContext } from 'svelte';
@@ -58,10 +57,18 @@
 			console.log(chat);
 
 			if (chat.chat) {
-				await createNewChat(localStorage.token, chat.chat);
+				await importChat(
+					localStorage.token,
+					chat.chat,
+					chat.meta ?? {},
+					false,
+					null,
+					chat?.created_at ?? null,
+					chat?.updated_at ?? null
+				);
 			} else {
-				await createNewChat(localStorage.token, chat);
-			}
+				// Legacy format
+				await importChat(localStorage.token, chat, {}, false, null);
 		}
 
 		currentChatPage.set(1);