style: apply prettier across fork files

check:prettier was not part of my gate routine, so formatting drift accumulated
across the session's touched files (and a few older ones). Run prettier --write
to bring the repo back to 'All matched files use Prettier code style!'.
Formatting only — no logic changes. tsc/tests/build all green.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/app/state/recentStickers.ts

@@ -32,7 +32,7 @@ export const recentStickersAtom = atom(
       const prevList = Array.isArray(prev) ? prev : [];
       return typeof updater === 'function' ? updater(prevList) : updater;
     });
-  }
+  },
 );
 
 /**
@@ -42,7 +42,7 @@ export const recentStickersAtom = atom(
 export const addRecentSticker = (
   prev: RecentSticker[],
   sticker: RecentSticker,
-  max = MAX_RECENT_STICKERS
+  max = MAX_RECENT_STICKERS,
 ): RecentSticker[] => {
   if (!sticker.url) return prev;
   const withoutDupe = prev.filter((s) => s.url !== sticker.url);