S7 (a1): newsletter — THE VYNDR REPORT

Email capture + daily report assembly + operator-triggered Listmonk send.

- NewsletterCapture (dark terminal, mono) on landing (below FAQ) + /welcome
  (the real signup success surface); double-opt-in note; 'Signups open soon'
  when Listmonk env is unset.
- POST /api/newsletter/subscribe: public, 10/min IP limit, honeypot,
  server-side email validation, forwards to Listmonk subscribers API with
  preconfirm_subscriptions:false (Listmonk sends the confirmation).
  No env -> calm 200 { ok:false, reason:'not configured' }. Next proxy
  web/src/app/api/newsletter/subscribe/route.ts (S25 rule).
- newsletterService.buildDailyReport: signals from snapshot:{sport}:latest,
  STREAK WATCH via rosterLogs -> streaksService -> streakLens, THE RECORD via
  ledgerService.getModelAggregate (percentage only when hit_pct != null —
  n>=20 gate — else 'RECORD BUILDING · N pending'). RG footer (21+,
  1-800-GAMBLER, Listmonk-native {{ UnsubscribeURL }}) in html + text.
  VOICE v1.1 lint locked by tests: no '!', no banned vocabulary, numbers
  only from injected pipeline data.
- sendDailyReport: creates + starts a Listmonk campaign; env-gated no-op;
  refuses an empty report. Deliberately UNSCHEDULED — only
  POST /api/internal/newsletter/send (internal key) triggers it.
- docs/NEWSLETTER.md: box-side Listmonk runbook (install, double-opt-in
  list, API user, Coolify env, test-send).
- Spec: specs/feature-a1-s7-newsletter.md.

Tests 2398 -> 2429 (207 suites, all green); next build exit 0.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

web/src/app/api/newsletter/subscribe/route.ts

@@ -0,0 +1,35 @@
+import { NextRequest, NextResponse } from 'next/server';
+
+export const dynamic = 'force-dynamic';
+
+const BACKEND_URL = process.env.BACKEND_URL || 'http://localhost:3000';
+
+/**
+ * Newsletter subscribe proxy (Session S7, a1) — S25 rule: the browser hits
+ * the Next origin, never Express directly. Forwards to the backend, which
+ * forwards to the self-hosted Listmonk (double opt-in).
+ *
+ * Failure posture: any upstream problem degrades to the calm
+ * { ok: false, reason: 'not configured' } shape — the capture component
+ * renders "Signups open soon", never an error wall.
+ */
+export async function POST(req: NextRequest) {
+  let body: unknown = {};
+  try {
+    body = await req.json();
+  } catch {
+    return NextResponse.json({ ok: false, error: 'Enter a valid email.' }, { status: 400 });
+  }
+  try {
+    const upstream = await fetch(`${BACKEND_URL}/api/newsletter/subscribe`, {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json', Accept: 'application/json' },
+      body: JSON.stringify(body),
+      cache: 'no-store',
+    });
+    const data = await upstream.json().catch(() => ({ ok: false, reason: 'not configured' }));
+    return NextResponse.json(data, { status: upstream.status === 400 ? 400 : 200 });
+  } catch {
+    return NextResponse.json({ ok: false, reason: 'not configured' }, { status: 200 });
+  }
+}