Add public REST API, anti-abuse protections, radio/GitHub cron jobs

Phase A — Public REST API (was the biggest gap). 20 JSON endpoints under
/api mirroring AtomCMS: users/[username], online(+/count), me, articles
(+/[slug]), photos, home, staff, teams, leaderboard, shop(+/categories),
values(+/categories), settings, radio/{config,now-playing,listeners,
shouts}. Shared src/lib/api.ts (apiJson — BigInt-safe + CORS, pagination).
Read-only, fail-soft, and field-safe (never exposes password/auth_ticket/
2FA secrets/mail).

Phase B — Anti-abuse on registration: CAPTCHA (Cloudflare Turnstile /
Google reCAPTCHA, settings-driven, widget rendered on the register page),
VPN/proxy detection (proxycheck.io / IPQualityScore via /admin/vpn
settings), and max-accounts-per-IP. All fail-open when unconfigured.
src/lib/services/{captcha,ip-lookup}.ts.

Phase C — jobs-worker cron suite: radio-record-songs (30s, logs track
changes to radio_song_plays), radio-auto-dj (rotates radio_auto_dj_playlist
when no live DJ), github-update-check (hourly, sets update_available).
Shared src/lib/services/radio.ts (now-playing/listeners parsing).

Verified live (prod, amx_test): /api/* return real JSON (leaderboard 6
users, settings carry no secrets, user endpoint hides password). tsc 0,
vitest 49/49, next build 0 (20 new API routes).

src/app/api/online/count/route.ts

@@ -0,0 +1,21 @@
+// Public REST API — count of currently-online users.
+//
+// `online` is the emulator's string flag "1" / "0" (see User model). Returns
+// { count: 0 } (never 500) on DB failure.
+
+import { apiJson } from "@/lib/api";
+import { prisma } from "@/lib/prisma";
+
+export const dynamic = "force-dynamic";
+
+export async function GET(_req: Request) {
+  try {
+    const count = await prisma.user.count({
+      where: { online: "1" },
+    });
+
+    return apiJson({ count });
+  } catch {
+    return apiJson({ count: 0 });
+  }
+}

src/app/api/online/route.ts

@@ -0,0 +1,24 @@
+// Public REST API — list of currently-online users (username + look only).
+//
+// `online` is stored by the emulator as the string "1" / "0" (see User model in
+// prisma/schema.prisma). Capped at 100 rows. Returns empty data (never 500) on
+// DB failure.
+
+import { apiJson } from "@/lib/api";
+import { prisma } from "@/lib/prisma";
+
+export const dynamic = "force-dynamic";
+
+export async function GET(_req: Request) {
+  try {
+    const users = await prisma.user.findMany({
+      where: { online: "1" },
+      select: { username: true, look: true },
+      take: 100,
+    });
+
+    return apiJson({ users });
+  } catch {
+    return apiJson({ users: [] });
+  }
+}