refactor(dto): move app models into dto layer

src/app/chat/chat-screen.tsx

@@ -21,7 +21,7 @@ import { useEffect, useRef } from "react";
 import Image from "next/image";
 
 import { useAuthState } from "@/stores/auth/auth-context";
-import type { LoginStatus } from "@/models/auth/login-status";
+import type { LoginStatus } from "@/data/dto/auth";
 import { AuthStorage } from "@/data/storage/auth/auth_storage";
 import { useChatDispatch, useChatState } from "@/stores/chat/chat-context";
 

src/app/chat/components/chat-area.tsx

@@ -16,7 +16,7 @@
  */
 import { useEffect, useRef } from "react";
 
-import type { UiMessage } from "@/models/chat/ui-message";
+import type { UiMessage } from "@/data/dto/chat";
 
 import { AiDisclosureBanner } from "./ai-disclosure-banner";
 import { DateHeader } from "./date-header";
@@ -79,4 +79,4 @@ function renderMessagesWithDateHeaders(messages: readonly UiMessage[]) {
       />
     ),
   );
-}
+}