Initial import of fitme3070.pt platform

Plain-PHP fleet platform with id.andmore.pt SSO. Wires shared/platform-tools
as a submodule (platform_update, backups, git/migration tools) like the other
platforms.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

site/includes/newsletter.php

@@ -0,0 +1,35 @@
+<section id="newsletter" class="newsletter-section set-bg fade-in" data-setbg="<?= base_url('site/assets/img/newsletter-bg/1.jpg') ?>">
+  <div class="container">
+    <div class="row">
+      <div class="col-lg-6">
+        <div class="section-title text-white mb-0">
+          <h2>Subscreve a nossa <span>newsletter</span></h2>
+          <p>Fica a par de todas as novidades e campanhas que temos para ti!</p>
+          <p class="small" style="opacity:.6;margin-top:-.5rem;">Junta-te a centenas de atletas que já recebem as nossas dicas e ofertas exclusivas.</p>
+        </div>
+      </div>
+      <div class="col-lg-6">
+        <form class="newsletter-form"  method="post"  action="<?= base_url('email/send_email_newsletter') ?>">
+          <input type="email" required name="newsletter-email" id="newsletter-email" placeholder="Escreve aqui o teu e-mail" aria-label="Endereço de e-mail">
+          <button class="site-btn" id="newsletter-btn" type="submit">Subscrever</button>
+          <label class="consent-check">
+            <input type="checkbox" required name="newsletter-consent" value="1">
+            <span>Li e aceito a <a href="<?= base_url('home/privacidade') ?>" target="_blank" rel="noopener">Política de Privacidade</a>.</span>
+          </label>
+        </form>
+      </div>
+    </div>
+    <?php
+    $session = session();
+    if ( $session->getFlashdata( 'newsletter' ) !== null ):
+      ?>
+    <script>
+			document.getElementById('newsletter-email').value = <?= json_encode((string) $session->getFlashdata('newsletter'), JSON_HEX_TAG | JSON_HEX_AMP) ?>;
+				document.getElementById("newsletter-email").readOnly = true;
+				document.getElementById("newsletter-btn").disabled = true;
+				document.getElementById("newsletter-email").style.opacity = "0.7";
+				document.getElementById("newsletter-btn").style.opacity = "0.7";
+			</script>
+    <?php endif; ?>
+  </div>
+</section>