♻️ refactor: move portal code to features folder (lobehub#4631)

src/app/(main)/chat/(workspace)/@portal/default.tsx

@@ -6,7 +6,7 @@ import { isMobileDevice } from '@/utils/server/responsive';
 import Desktop from './_layout/Desktop';
 import Mobile from './_layout/Mobile';
 
-const PortalBody = lazy(() => import('./router'));
+const PortalBody = lazy(() => import('@/features/Portal/router'));
 
 const Inspector = () => {
   const mobile = isMobileDevice();

src/app/(main)/chat/(workspace)/@portal/features/Header.tsx

@@ -5,10 +5,9 @@ import { XIcon } from 'lucide-react';
 import { memo } from 'react';
 
 import SidebarHeader from '@/components/SidebarHeader';
+import { PortalHeader } from '@/features/Portal/router';
 import { useChatStore } from '@/store/chat';
 
-import { PortalHeader } from '../router';
-
 const Header = memo(() => {
   const [toggleInspector] = useChatStore((s) => [s.togglePortal]);