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/drizzle/meta/_journal.json

@@ -50,6 +50,27 @@
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       "tag": "0006_grey_korvac",
       "breakpoints": true
+    },
+    {
+      "idx": 7,
+      "version": "7",
+      "when": 1791116118996,
+      "tag": "0007_lowly_wilson_fisk",
+      "breakpoints": true
+    },
+    {
+      "idx": 8,
+      "version": "7",
+      "when": 1791239885734,
+      "tag": "0008_romantic_nomad",
+      "breakpoints": true
+    },
+    {
+      "idx": 9,
+      "version": "7",
+      "when": 1791240840729,
+      "tag": "0009_black_wild_pack",
+      "breakpoints": true
     }
   ]
 }