Unlock everything, add a donation link, credit Last.fm, nudge re-linking

- Every feature is free for everyone (the plan system stays for later);
  remaining limits are abuse guards
- Optional website donation link (NEXT_PUBLIC_DONATION_URL). Not shown in
  the mobile apps, where tips to the developer generally need in-app
  purchase
- Last.fm/ListenBrainz-sourced plays link to the user's profile, as
  Last.fm's API terms require
- Connections track when they last saw activity; a scrobbler silent for
  over a week prompts re-linking Spotify (its link expires every 6 months)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MzFywujuH9TiuXbr9vjoX8

apps/mobile/src/components/RecentPlays.tsx

@@ -1,11 +1,20 @@
 import { Image } from 'expo-image';
 import { Linking, Pressable, StyleSheet, Text, View } from 'react-native';
-import { openUrl, timeAgo, type RecentPlayDTO, type StreamingService } from '@musicshare/shared';
+import { openUrl, timeAgo, type ProfileDTO, type RecentPlayDTO, type StreamingService } from '@musicshare/shared';
 import { showError } from '@/lib/errors';
 import { colors, radius, space } from '@/lib/theme';
 import { Card, Heading } from './ui';
 
-export function RecentPlays({ plays, preferred }: { plays: RecentPlayDTO[]; preferred: StreamingService | null | undefined }) {
+export function RecentPlays({
+  plays,
+  preferred,
+  attribution = {},
+}: {
+  plays: RecentPlayDTO[];
+  preferred: StreamingService | null | undefined;
+  attribution?: ProfileDTO['attribution'];
+}) {
+  const credits = (['lastfm', 'listenbrainz'] as const).filter((s) => attribution[s] && plays.some((p) => p.source === s));
   if (plays.length === 0) return null;
   return (
     <Card style={{ gap: 0 }}>
@@ -35,6 +44,11 @@ export function RecentPlays({ plays, preferred }: { plays: RecentPlayDTO[]; pref
           <Text style={styles.time}>{timeAgo(p.playedAt)}</Text>
         </Pressable>
       ))}
+      {credits.map((s) => (
+        <Text key={s} style={styles.credit} onPress={() => Linking.openURL(attribution[s]!)}>
+          Some plays via <Text style={{ textDecorationLine: 'underline' }}>{s === 'lastfm' ? 'Last.fm' : 'ListenBrainz'}</Text>
+        </Text>
+      ))}
     </Card>
   );
 }
@@ -47,4 +61,5 @@ const styles = StyleSheet.create({
   title: { color: colors.text, fontWeight: '600', fontSize: 14 },
   artist: { color: colors.muted, fontSize: 13 },
   time: { color: colors.muted, fontSize: 12 },
+  credit: { color: colors.muted, fontSize: 12, marginTop: space.sm },
 });