Add OTP_REQUIRED switch for email OTP login

app/include_topbar.php

@@ -3,6 +3,7 @@
 require_once __DIR__ . '/config.php';
 require_once __DIR__ . '/dbconn.php';
 require_once __DIR__ . '/assets/utils/classes/UsageGuard.php';
+require_once __DIR__ . '/assets/utils/otp_policy.php';
 
 // Redirect to login if the user has not completed full authentication.
 // login_company_id is only written by login_confirm.php after OTP is verified —
@@ -198,6 +199,18 @@ $_usage_full   = $_usage_max_pct >= 100;
       </li>
       <?php endif; ?>
 
+      <!-- Email OTP off: a weakened sign-in must never be invisible to whoever is using it -->
+      <?php if (!otp_required()): ?>
+      <li class="d-none d-md-block">
+        <span class="badge bg-warning text-dark d-flex align-items-center gap-1 px-2 py-1"
+              style="font-size:11px; cursor:default;"
+              title="OTP_REQUIRED=false in config.php">
+          <i class="ti ti-shield-off"></i>
+          OTP off
+        </span>
+      </li>
+      <?php endif; ?>
+
       <!-- Usage limit warning -->
       <?php if ($_usage_full || $_usage_warn): ?>
       <li>