feat: expor vertentes Casamentos/Corporate na jornada pública

Fecha o gap do MAN-126 na navegação e no portfólio: âncoras das
duas vertentes no header/footer, filtro por event_type e empty
state honesto para Corporate sem prova inventada.

Co-authored-by: Cursor <cursoragent@cursor.com>

app/Domain/Marketing/PortfolioVertical.php

@@ -0,0 +1,45 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Domain\Marketing;
+
+/**
+ * Public portfolio verticals used to separate Casamentos and Corporate proof.
+ *
+ * Matching is intentionally tolerant of free-text `event_type` values already
+ * stored in the CMS (e.g. "Casamento", "Mini wedding", "Corporativo").
+ */
+enum PortfolioVertical: string
+{
+    case Casamentos = 'casamentos';
+    case Corporate = 'corporate';
+
+    public function label(): string
+    {
+        return match ($this) {
+            self::Casamentos => 'Casamentos',
+            self::Corporate => 'Corporate',
+        };
+    }
+
+    /**
+     * @return list<string>
+     */
+    public function eventTypePatterns(): array
+    {
+        return match ($this) {
+            self::Casamentos => ['%casamento%', '%wedding%', '%social%'],
+            self::Corporate => ['%corporat%', '%empresa%', '%business%'],
+        };
+    }
+
+    public static function tryFromQuery(?string $value): ?self
+    {
+        if ($value === null || $value === '') {
+            return null;
+        }
+
+        return self::tryFrom($value);
+    }
+}