Safety screens: followers, blocking, reporting, admin

Web and mobile:
- Follower/following lists (tap the counts), with Follow buttons and
  "Remove" on your own followers.
- Profile ⋯ menu: block (with confirmation) / unblock, and report with a
  reason and optional note. "Follows you" label, "Follow back", and a
  banner on profiles you've blocked.
- Blocked accounts list in Settings, with unblock.
Web only: /admin for the admin account: stats, open/resolved reports,
resolve, suspend/unsuspend.

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

apps/mobile/src/app/(tabs)/settings.tsx

@@ -441,6 +441,7 @@ function Account() {
       <Body muted style={styles.small}>
         Signed in as @{me?.username} · {me?.plan === 'free' ? 'Free plan' : 'Plus'}
       </Body>
+      <Button small title="Blocked accounts" onPress={() => router.push('/blocked')} style={{ alignSelf: 'flex-start' }} />
       <Row>
         <Button small title="Log out" onPress={signOut} />
         <Button small variant="danger" title="Delete account" onPress={confirmDelete} />

apps/mobile/src/app/_layout.tsx

@@ -91,7 +91,11 @@ function AppNavigator() {
         </Stack.Protected>
         <Stack.Protected guard={signedIn}>
           {/* Reachable from onboarding too (scanning a friend's code, viewing a profile). */}
-          <Stack.Screen name="u/[username]" options={{ title: '' }} />
+          <Stack.Screen name="u/[username]/index" options={{ title: '' }} />
+          <Stack.Screen name="u/[username]/followers" options={{ title: 'Followers' }} />
+          <Stack.Screen name="u/[username]/following" options={{ title: 'Following' }} />
+          <Stack.Screen name="report/[username]" options={{ title: 'Report', presentation: 'modal' }} />
+          <Stack.Screen name="blocked" options={{ title: 'Blocked accounts' }} />
           <Stack.Screen name="scan" options={{ title: 'Scan a code', presentation: 'modal' }} />
         </Stack.Protected>
         <Stack.Protected guard={!signedIn}>

apps/mobile/src/app/blocked.tsx

@@ -0,0 +1,49 @@
+import { Link } from 'expo-router';
+import { FlatList, StyleSheet, Text, View } from 'react-native';
+import useSWR from 'swr';
+import type { UserSummaryDTO } from '@musicshare/shared';
+import { Avatar } from '@/components/Avatar';
+import { Body, Button } from '@/components/ui';
+import { api } from '@/lib/api';
+import { showError } from '@/lib/errors';
+import { colors, space } from '@/lib/theme';
+
+export default function BlockedScreen() {
+  const { data: blocked = [], mutate, isLoading } = useSWR<UserSummaryDTO[]>('/me/blocks');
+  const unblock = async (username: string) => {
+    try {
+      await api.unblock(username);
+      await mutate();
+    } catch (err) {
+      showError(err);
+    }
+  };
+  return (
+    <FlatList
+      data={blocked}
+      keyExtractor={(u) => u.id}
+      contentContainerStyle={styles.list}
+      ListEmptyComponent={isLoading ? null : <Body muted>You haven&apos;t blocked anyone. Block someone from the ⋯ menu on their profile.</Body>}
+      renderItem={({ item: u }) => (
+        <View style={styles.row}>
+          <Link href={`/u/${u.username}`} style={{ flex: 1 }}>
+            <View style={styles.person}>
+              <Avatar user={u} size={40} />
+              <Text style={styles.name} numberOfLines={1}>
+                {u.displayName ?? u.username}
+              </Text>
+            </View>
+          </Link>
+          <Button small title="Unblock" onPress={() => unblock(u.username)} />
+        </View>
+      )}
+    />
+  );
+}
+
+const styles = StyleSheet.create({
+  list: { padding: space.lg, gap: space.md },
+  row: { flexDirection: 'row', alignItems: 'center', gap: space.md },
+  person: { flexDirection: 'row', alignItems: 'center', gap: space.md },
+  name: { color: colors.text, fontSize: 15, fontWeight: '600', flexShrink: 1 },
+});

apps/mobile/src/app/report/[username].tsx

@@ -0,0 +1,52 @@
+import { router, useLocalSearchParams } from 'expo-router';
+import { useState } from 'react';
+import { KeyboardAvoidingView, Platform } from 'react-native';
+import { REPORT_REASONS, REPORT_REASON_LABELS, type ReportReason } from '@musicshare/shared';
+import { Screen } from '@/components/Screen';
+import { Body, Button, Chip, Field, Row, Title } from '@/components/ui';
+import { api } from '@/lib/api';
+import { showError } from '@/lib/errors';
+
+export default function ReportScreen() {
+  const { username } = useLocalSearchParams<{ username: string }>();
+  const [reason, setReason] = useState<ReportReason | null>(null);
+  const [note, setNote] = useState('');
+  const [busy, setBusy] = useState(false);
+  const [sent, setSent] = useState(false);
+
+  const submit = async () => {
+    if (!reason) return;
+    setBusy(true);
+    try {
+      await api.report(username, { reason, note: note.trim() || null });
+      setSent(true);
+    } catch (err) {
+      showError(err, "Couldn't send the report");
+    }
+    setBusy(false);
+  };
+
+  if (sent) {
+    return (
+      <Screen>
+        <Title>Thanks for letting us know</Title>
+        <Body>We&apos;ll take a look. If they&apos;re bothering you, you can also block them from the ⋯ menu on their profile.</Body>
+        <Button variant="primary" title="Done" onPress={() => router.back()} />
+      </Screen>
+    );
+  }
+  return (
+    <KeyboardAvoidingView style={{ flex: 1 }} behavior={Platform.OS === 'ios' ? 'padding' : undefined}>
+      <Screen>
+        <Body muted>What&apos;s wrong with @{username}&apos;s account?</Body>
+        <Row>
+          {REPORT_REASONS.map((r) => (
+            <Chip key={r} label={REPORT_REASON_LABELS[r]} selected={reason === r} onPress={() => setReason(r)} />
+          ))}
+        </Row>
+        <Field label="Anything else? (optional)" value={note} onChangeText={setNote} maxLength={500} multiline style={{ minHeight: 80 }} />
+        <Button variant="primary" title="Send report" disabled={!reason} loading={busy} onPress={submit} />
+      </Screen>
+    </KeyboardAvoidingView>
+  );
+}

apps/mobile/src/app/u/[username]/followers.tsx

@@ -0,0 +1,12 @@
+import { Stack, useLocalSearchParams } from 'expo-router';
+import { FollowList } from '@/components/FollowList';
+
+export default function FollowersScreen() {
+  const { username } = useLocalSearchParams<{ username: string }>();
+  return (
+    <>
+      <Stack.Screen options={{ title: 'Followers' }} />
+      <FollowList username={username} direction="followers" />
+    </>
+  );
+}

apps/mobile/src/app/u/[username]/following.tsx

@@ -0,0 +1,12 @@
+import { Stack, useLocalSearchParams } from 'expo-router';
+import { FollowList } from '@/components/FollowList';
+
+export default function FollowingScreen() {
+  const { username } = useLocalSearchParams<{ username: string }>();
+  return (
+    <>
+      <Stack.Screen options={{ title: 'Following' }} />
+      <FollowList username={username} direction="following" />
+    </>
+  );
+}