Add 2FA, email + password reset, and batch-7 pages

Auth (hand-built on the auth core):
- 2FA: User model gains two_factor_secret/recovery_codes/confirmed_at (+ idempotent
  MariaDB migration). authorize() requires a valid TOTP code when 2FA is confirmed
  (secret decrypted via Laravel APP_KEY, fail-closed). Two-step login (precheckLogin
  reveals the code field). /settings/2fa enable/confirm/disable flow.
- Password reset: nodemailer email service; PasswordReset model + migration;
  /forgot (request, generic response) + /reset (token sha256 + 1h TTL, sets argon2id
  hash). Login links to forgot.

Batch 7 (parallel agents): /admin/commandocentrum (RCON controls + emulator_errors),
social write actions (friend request + guild forum new thread), /help/[category],
/badges (public). env: APP_KEY, APP_URL, SMTP_*. Nav extended.

Verified: tsc exit 0, vitest 48/48, next build exit 0 (64 page routes).

src/lib/services/email.ts

@@ -0,0 +1,38 @@
+import nodemailer, { type Transporter } from "nodemailer";
+import { env } from "@/env";
+
+let transporter: Transporter | null = null;
+
+function getTransport(): Transporter | null {
+  if (!env.SMTP_HOST) return null;
+  if (!transporter) {
+    transporter = nodemailer.createTransport({
+      host: env.SMTP_HOST,
+      port: env.SMTP_PORT ?? 587,
+      secure: env.SMTP_SECURE,
+      auth: env.SMTP_USER ? { user: env.SMTP_USER, pass: env.SMTP_PASSWORD } : undefined,
+    });
+  }
+  return transporter;
+}
+
+/** Send an HTML email. No-ops (returns false) when SMTP isn't configured. */
+export async function sendMail(to: string, subject: string, html: string): Promise<boolean> {
+  const t = getTransport();
+  if (!t) {
+    console.warn("[email] SMTP not configured — skipping mail to", to);
+    return false;
+  }
+  try {
+    await t.sendMail({
+      from: env.SMTP_FROM ?? `no-reply@${env.HOTEL_NAME}`,
+      to,
+      subject,
+      html,
+    });
+    return true;
+  } catch (e) {
+    console.error("[email] send failed:", (e as Error).message);
+    return false;
+  }
+}