fix(home): defer first-launch intro until the save-account sheet is dismissed

On first login with "save account" checked, the intro sheet's 1s timer
fired while the post-login save-account bottom sheet was still up and
stole its presentation (both are gorhom modals), closing it. Gate the
intro on pendingAccountSaveAtom so it only schedules once no account
save is pending: before the sheet opens, or after it is dismissed.

components/home/Home.tsx

@@ -39,7 +39,11 @@ import { useRefreshLibraryOnFocus } from "@/hooks/useRefreshLibraryOnFocus";
 import { useInvalidatePlaybackProgressCache } from "@/hooks/useRevalidatePlaybackProgressCache";
 import { useDownload } from "@/providers/DownloadProvider";
 import { useIntroSheet } from "@/providers/IntroSheetProvider";
-import { apiAtom, userAtom } from "@/providers/JellyfinProvider";
+import {
+  apiAtom,
+  pendingAccountSaveAtom,
+  userAtom,
+} from "@/providers/JellyfinProvider";
 import { SortByOption, SortOrderOption } from "@/utils/atoms/filters";
 import { useSettings } from "@/utils/atoms/settings";
 import { eventBus } from "@/utils/eventBus";
@@ -89,6 +93,9 @@ const HomeMobile = () => {
   const invalidateCache = useInvalidatePlaybackProgressCache();
   const [loadedSections, setLoadedSections] = useState<Set<string>>(new Set());
   const { showIntro } = useIntroSheet();
+  // Gate the intro so it can't steal presentation from the post-login
+  // save-account sheet (both are BottomSheetModals): wait until no save is pending.
+  const pendingAccountSave = useAtomValue(pendingAccountSaveAtom);
 
   // Fallback refresh for newly added content when returning to the home screen
   // (primary path is the LibraryChanged WebSocket event).
@@ -97,7 +104,9 @@ const HomeMobile = () => {
   // Show intro modal on first launch
   useEffect(() => {
     const hasShownIntro = storage.getBoolean("hasShownIntro");
-    if (!hasShownIntro) {
+    // Defer while the save-account sheet is up; this effect re-runs and schedules
+    // the intro once the sheet is dismissed (pendingAccountSaveAtom cleared).
+    if (!hasShownIntro && !pendingAccountSave) {
       const timer = setTimeout(() => {
         showIntro();
       }, 1000);
@@ -106,7 +115,7 @@ const HomeMobile = () => {
         clearTimeout(timer);
       };
     }
-  }, [showIntro]);
+  }, [showIntro, pendingAccountSave]);
 
   useEffect(() => {
     if (isConnected && !prevIsConnected.current) {