feat(play-next): add FRIENDS row and reason text

Shows games from followed users. Reason displays friend name and finish
or playtime status. Supports reroll without mood. Added English and
German translations.

src/pages/PlayNextPage.jsx

@@ -27,7 +27,7 @@ const BUDGETS = [
 // games without that data.
 const MOODS = ['ANY', 'STORY', 'COOP', 'CHILL', 'ACTION', 'SCARY', 'SPEEDRUN'];
 // The rows in the order Core sends them; RANDOM is the mood row.
-const ROW_ORDER = ['NEXT_UP', 'SERIES', 'SIMILAR', 'STUDIO', 'LONGEST', 'RANDOM'];
+const ROW_ORDER = ['NEXT_UP', 'SERIES', 'SIMILAR', 'STUDIO', 'FRIENDS', 'LONGEST', 'RANDOM'];
 // The backend reads only this many excludes. With a bigger backlog the oldest seen games can come back.
 const MAX_EXCLUDES = 100;
 const ROW_CLASS = 'flex gap-4 overflow-x-auto snap-x snap-mandatory pb-2 sm:grid sm:grid-cols-3 sm:overflow-visible';
@@ -259,6 +259,11 @@ const reasonText = (reason, t, language) => {
     if (reason?.source === 'STUDIO') {
         return t('PLAY_NEXT.REASON.STUDIO', {name: reason.studioName});
     }
+    if (reason?.source === 'FRIENDS') {
+        return reason.friendFinished
+            ? t('PLAY_NEXT.REASON.FRIENDS_FINISHED', {name: reason.friendName})
+            : t('PLAY_NEXT.REASON.FRIENDS_PLAYED', {name: reason.friendName, playtime: formatPlaytime(reason.friendPlaytimeMinutes)});
+    }
     if (reason?.source === 'LONGEST') {
         return t('PLAY_NEXT.REASON.LONGEST', {date: formatDate(reason.firstSeenAt, language, {dateStyle: 'medium'})});
     }