feat(player): add current track to playlists

apps/mobile/src/app/player.tsx

@@ -91,6 +91,12 @@ export default function PlayerScreen() {
           <Text numberOfLines={1} style={{ color: colors.text2, fontSize: 15 }}>
             {track.artists.map((a) => a.name).join(', ')}
           </Text>
+          <Pressable onPress={() => router.push({ pathname: '/playlists', params: { track: track.id } })}
+            accessibilityRole="button" accessibilityLabel={t('playlists.add')}
+            style={{ flexDirection: 'row', alignItems: 'center', gap: 8, minHeight: 44, alignSelf: 'flex-start' }}>
+            <Icon name="playlist-add" size={24} color={colors.text2} />
+            <Text style={{ color: colors.text2 }}>{t('playlists.add')}</Text>
+          </Pressable>
         </View>
 
         <View style={{ gap: 6 }}>