refac: chatlist skip, limit -> page

src/lib/stores/index.ts

@@ -43,8 +43,7 @@ export const showChangelog = writable(false);
 export const showCallOverlay = writable(false);
 
 export const scrollPaginationEnabled = writable(true);
-export const pageSkip = writable(0);
-export const pageLimit = writable(-1);
+export const currentChatPage = writable(0);
 
 export type Model = OpenAIModel | OllamaModel;