API: follower lists, blocking, reports, admin; drop Spotify sign-in

- Followers/following lists (paginated), 'follows you', remove a follower
- Blocking severs follows both ways and hides each user from the other
  (profile 404s, search, follows); the blocker sees activity hidden
- Reports for moderation (App Store guideline 1.2)
- First account on a server becomes admin; admins see the report queue,
  resolve reports, and suspend accounts (signs out, blocks login, hides
  the profile, stops sharing). set-role script to promote/demote
- users.onboardedAt drives first-run onboarding; existing accounts are
  backfilled as already onboarded. Empty PATCH /me no longer 500s
- Remove Spotify account sign-in and polling: Spotify caps new apps at 5
  accounts, so Spotify arrives via its Last.fm/ListenBrainz link or the
  Android reader. App-level catalog search stays for exact links
- Shared: QR code generation and profile-link parsing (verified with jsQR)
- Integration test timeout raised; password hashing is slow by design

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

apps/api/test/admin.test.ts

@@ -0,0 +1,65 @@
+import { describe, expect, it } from 'vitest';
+import { applyPollResult } from '../src/services/nowPlaying';
+import { bearer, createUser, useTestApp } from './helpers';
+
+const app = useTestApp();
+const get = (url: string, token?: string) => app().inject({ url, headers: token ? bearer(token) : {} });
+const post = (url: string, token: string, payload: object = {}) => app().inject({ method: 'POST', url, headers: bearer(token), payload });
+
+describe('admin', () => {
+  it('makes the first account on a server the admin, and only the first', async () => {
+    const first = await createUser(app(), 'founder');
+    const second = await createUser(app(), 'second');
+    expect(first.user.role).toBe('admin');
+    expect(second.user.role).toBe('user');
+  });
+
+  it('keeps admin endpoints away from regular users', async () => {
+    await createUser(app(), 'founder');
+    const user = await createUser(app(), 'regular');
+    expect((await get('/admin/stats', user.token)).statusCode).toBe(403);
+    expect((await get('/admin/reports', user.token)).statusCode).toBe(403);
+    expect((await get('/admin/stats')).statusCode).toBe(401);
+  });
+
+  it('shows the report queue and resolves reports', async () => {
+    const admin = await createUser(app(), 'founder');
+    const alice = await createUser(app(), 'alice');
+    await createUser(app(), 'spammer');
+    await post('/users/spammer/report', alice.token, { reason: 'spam', note: 'links everywhere' });
+
+    const queue = (await get('/admin/reports', admin.token)).json();
+    expect(queue).toHaveLength(1);
+    expect(queue[0]).toMatchObject({ reason: 'spam', note: 'links everywhere', reporter: { username: 'alice' }, reported: { username: 'spammer', suspended: false } });
+    expect((await get('/admin/stats', admin.token)).json()).toMatchObject({ users: 3, openReports: 1 });
+
+    await post(`/admin/reports/${queue[0].id}/resolve`, admin.token);
+    expect((await get('/admin/reports', admin.token)).json()).toHaveLength(0);
+    expect((await get('/admin/reports?status=resolved', admin.token)).json()).toHaveLength(1);
+  });
+
+  it('suspension signs the user out, blocks login, hides them, and stops sharing', async () => {
+    const admin = await createUser(app(), 'founder');
+    const bad = await createUser(app(), 'troll');
+    const viewer = await createUser(app(), 'viewer');
+    await applyPollResult(bad.user.id, 'spotify', { track: { title: 'Loud', artist: 'X' }, isPlaying: true, progressMs: 0 });
+
+    expect((await post('/admin/users/troll/suspend', admin.token)).statusCode).toBe(200);
+    expect((await get('/me', bad.token)).statusCode).toBe(401);
+    const login = await app().inject({ method: 'POST', url: '/auth/login', payload: { email: 'troll@example.com', password: 'password123' } });
+    expect(login.statusCode).toBe(403);
+    expect((await get('/users/troll', viewer.token)).statusCode).toBe(404);
+    expect((await get('/users/search?q=tro', viewer.token)).json()).toEqual([]);
+    // Admins can still look them up.
+    expect((await get('/users/troll', admin.token)).json().nowPlaying.isPlaying).toBe(false);
+
+    await app().inject({ method: 'DELETE', url: '/admin/users/troll/suspend', headers: bearer(admin.token) });
+    const again = await app().inject({ method: 'POST', url: '/auth/login', payload: { email: 'troll@example.com', password: 'password123' } });
+    expect(again.statusCode).toBe(200);
+  });
+
+  it("can't suspend yourself or another admin", async () => {
+    const admin = await createUser(app(), 'founder');
+    expect((await post('/admin/users/founder/suspend', admin.token)).statusCode).toBe(400);
+  });
+});