Initial dev export (exclude uploads/runtime)

views/site/404.php

@@ -0,0 +1,12 @@
+<?php
+$pageTitle = $title ?? 'Not Found';
+ob_start();
+?>
+<section class="card">
+  <div class="badge">404</div>
+  <h1 style="margin-top:16px; font-size:28px;"><?= htmlspecialchars($title ?? 'Not Found', ENT_QUOTES, 'UTF-8') ?></h1>
+  <p style="color:var(--muted);"><?= htmlspecialchars($message ?? 'Missing page', ENT_QUOTES, 'UTF-8') ?></p>
+</section>
+<?php
+$content = ob_get_clean();
+require __DIR__ . '/layout.php';