web: Strukturierte Daten (JSON-LD) und SEO-Metas fürs öffentliche Frontend

Ergänzt die bislang fehlenden strukturierten Daten auf den Presse-Seiten:

- PM-Detailseite: NewsArticle + BreadcrumbList als JSON-LD sowie
  article:published_time/-section/-tag-Metas und og:image:alt — nur auf
  der öffentlichen Seite, die noindex-Vorschau bleibt ohne Markup.
- Kategorie-Seiten: BreadcrumbList plus hreflang de/en über die
  lokalisierten Slugs (CategoryPageData liefert dafür neu
  categoryAlternateSlugs, mit View-Fallback für gecachte Alt-Daten).
- Newsroom: Organization-Markup (Logo, Website als sameAs, Boilerplate).
- Portal-Homepages: WebSite mit SearchAction (Sitelinks-Searchbox) und
  Organization.
- Layout: og:locale und twitter:image ergänzt; neue Sections meta_extra
  und structured_data.

Neue Komponente x-web.structured-data rendert JSON-LD mit JSON_HEX_TAG,
damit "</script>" in Titeln/Teasern das Script-Tag nicht aufbrechen kann.
JSON-LD-URLs werden wie der Canonical aus der Portal-Basis gebaut
(unabhängig von forceRootUrl), damit Host und Canonical übereinstimmen.

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

tests/Feature/Web/StructuredDataTest.php

@@ -0,0 +1,119 @@
+<?php
+
+use App\Enums\Portal;
+use App\Enums\PressReleaseStatus;
+use App\Models\Category;
+use App\Models\Company;
+use App\Models\PressRelease;
+use App\Models\User;
+use App\Services\Auth\MagicLinkGenerator;
+use Tests\TestCase;
+
+function makeStructuredDataRelease(): PressRelease
+{
+    $category = Category::factory()->create(['portal' => Portal::Businessportal24]);
+    $category->translations()->create(['locale' => 'de', 'name' => 'Technologie', 'slug' => 'technologie']);
+
+    $company = Company::factory()->businessportal24()->create(['name' => 'Muster GmbH']);
+
+    return PressRelease::factory()
+        ->published()
+        ->forPortal(Portal::Businessportal24)
+        ->for($category)
+        ->for($company)
+        ->create([
+            'slug' => 'strukturierte-daten-pm',
+            'title' => 'Strukturierte Daten für Pressemitteilungen',
+            'published_at' => now()->subDay(),
+        ]);
+}
+
+test('the release detail page emits NewsArticle and BreadcrumbList JSON-LD', function () {
+    /** @var TestCase $this */
+    makeStructuredDataRelease();
+
+    $this->get('https://businessportal24.test/de/press-release/strukturierte-daten-pm')
+        ->assertSuccessful()
+        ->assertSee('<script type="application/ld+json">', false)
+        ->assertSee('"@type":"NewsArticle"', false)
+        ->assertSee('"headline":"Strukturierte Daten für Pressemitteilungen"', false)
+        ->assertSee('"datePublished"', false)
+        ->assertSee('"publisher":{"@type":"Organization","name":"businessportal24"', false)
+        ->assertSee('"author":{"@type":"Organization","name":"Muster GmbH"', false)
+        ->assertSee('"@type":"BreadcrumbList"', false)
+        ->assertSee('"articleSection":"Technologie"', false);
+});
+
+test('the release detail page emits article meta tags and og locale', function () {
+    /** @var TestCase $this */
+    makeStructuredDataRelease();
+
+    $this->get('https://businessportal24.test/de/press-release/strukturierte-daten-pm')
+        ->assertSuccessful()
+        ->assertSee('<meta property="article:published_time" content="', false)
+        ->assertSee('<meta property="article:section" content="Technologie">', false)
+        ->assertSee('<meta property="og:locale" content="de_DE">', false);
+});
+
+test('the private preview emits neither JSON-LD nor article meta tags', function () {
+    /** @var TestCase $this */
+    $owner = User::factory()->create();
+    $release = PressRelease::factory()->forPortal(Portal::Businessportal24)->create([
+        'user_id' => $owner->id,
+        'status' => PressReleaseStatus::Draft->value,
+    ]);
+
+    $share = app(MagicLinkGenerator::class)->createPressReleaseShareLink($release, $owner);
+
+    $this->get(route('press-releases.preview', ['token' => $share['plain_token']]))
+        ->assertOk()
+        ->assertDontSee('application/ld+json', false)
+        ->assertDontSee('article:published_time', false);
+});
+
+test('a portal homepage emits WebSite JSON-LD with a SearchAction', function () {
+    /** @var TestCase $this */
+    $this->get('https://presseecho.test/de')
+        ->assertSuccessful()
+        ->assertSee('"@type":"WebSite"', false)
+        ->assertSee('"@type":"SearchAction"', false)
+        ->assertSee('https://presseecho.test/de/suche?q={search_term_string}', false);
+});
+
+test('the newsroom page emits Organization JSON-LD for the company', function () {
+    /** @var TestCase $this */
+    $category = Category::factory()->create(['portal' => Portal::Businessportal24]);
+    $category->translations()->create(['locale' => 'de', 'name' => 'Wirtschaft', 'slug' => 'wirtschaft']);
+
+    $company = Company::factory()->businessportal24()->create([
+        'name' => 'Newsroom AG',
+        'website' => 'https://newsroom-ag.example',
+    ]);
+
+    PressRelease::factory()
+        ->published()
+        ->forPortal(Portal::Businessportal24)
+        ->for($category)
+        ->for($company)
+        ->create(['published_at' => now()->subDay()]);
+
+    $this->get('https://businessportal24.test/de/newsroom/'.$company->slug)
+        ->assertSuccessful()
+        ->assertSee('"@type":"Organization"', false)
+        ->assertSee('"name":"Newsroom AG"', false)
+        ->assertSee('"sameAs":["https://newsroom-ag.example"]', false);
+});
+
+test('the category page emits BreadcrumbList JSON-LD and localized hreflang links', function () {
+    /** @var TestCase $this */
+    $category = Category::factory()->create(['portal' => Portal::Businessportal24]);
+    $category->translations()->create(['locale' => 'de', 'name' => 'Technologie', 'slug' => 'technologie']);
+    $category->translations()->create(['locale' => 'en', 'name' => 'Technology', 'slug' => 'technology']);
+
+    $this->get('https://businessportal24.test/de/category/technologie')
+        ->assertSuccessful()
+        ->assertSee('"@type":"BreadcrumbList"', false)
+        ->assertSee('"name":"Technologie"', false)
+        ->assertSee('<link rel="alternate" hreflang="de" href="https://businessportal24.test/de/category/technologie">', false)
+        ->assertSee('<link rel="alternate" hreflang="en" href="https://businessportal24.test/en/category/technology">', false);
+});