performance: Caching, deferred Tracking & externe Timeouts (H7, M12, M13)

- Navigations-Chrome (CategoryNavigation), Suche- und Newsroom-Seitendaten
  300s gecacht; gemeinsamer WebPageCache-Helper (eine TTL/Key-Konvention).
- Cache-Poisoning über ?page= geschlossen (Key an Paginator ausgerichtet,
  kein withQueryString im Cache); Newsrooms cachet nur den ungefilterten
  Fall und die ersten Seiten (kein unbegrenzter Key-Raum).
- Detailseiten schreiben Hits/View-Events deferred nach der Response
  (M12); OpenAI-/Markt-/USt-ID-Aufrufe mit Connect-Timeouts und
  begrenzten Retries; Admin-Memo-Caches konsistent invalidiert.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

app/Services/Web/SuchePageData.php

@@ -4,6 +4,7 @@ namespace App\Services\Web;
 
 use App\Models\PressRelease;
 use App\Scopes\PortalScope;
+use App\Support\WebPageCache;
 use App\Support\WebPortalContext;
 
 /**
@@ -17,20 +18,28 @@ class SuchePageData
      */
     public function build(WebPortalContext $context): array
     {
-        $mostReadReleases = PressRelease::query()
-            ->withoutGlobalScope(PortalScope::class)
-            ->forPortalValues($context->portalValues)
-            ->forLanguage($context->language)
-            ->visibleInArchive()
-            ->orderByDesc('hits')
-            ->orderByDesc('published_at')
-            ->limit(5)
-            ->get(['id', 'slug', 'title', 'hits', 'portal', 'language']);
+        $cacheKey = WebPageCache::key('search', [
+            'most-read',
+            implode('-', $context->portalValues),
+            $context->language,
+        ]);
 
-        return [
-            'portal' => $context->portal->value,
-            'language' => $context->language,
-            'mostReadReleases' => $mostReadReleases,
-        ];
+        return WebPageCache::remember($cacheKey, static function () use ($context): array {
+            $mostReadReleases = PressRelease::query()
+                ->withoutGlobalScope(PortalScope::class)
+                ->forPortalValues($context->portalValues)
+                ->forLanguage($context->language)
+                ->visibleInArchive()
+                ->orderByDesc('hits')
+                ->orderByDesc('published_at')
+                ->limit(5)
+                ->get(['id', 'slug', 'title', 'hits', 'portal', 'language']);
+
+            return [
+                'portal' => $context->portal->value,
+                'language' => $context->language,
+                'mostReadReleases' => $mostReadReleases,
+            ];
+        });
     }
 }