Backend-WIP: Kontakt-Queue, Page-Cache, Validierungs-Feedback, i18n

Gebuendelt, da ueber gemeinsame lang-/Service-Dateien verschraenkt:
- Kontakt-Nachrichten: contact_messages-Tabelle + Model/Enums/Factory,
  Admin-Queue (livewire/admin/contact-messages), ContactController
  persistiert das Anliegen zusaetzlich zur Brand-Mail
- Page-Data-Cache (Services/Web/*PageData) + web-archive-Indizes auf
  press_releases
- Validierungs-Feedback + Company-Portal-Restriction (Feature-Tests)
- i18n-Auslagerung lang/de|en (auth, passwords, validation, static)

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

database/migrations/2026_07_06_162634_create_contact_messages_table.php

@@ -0,0 +1,48 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+/**
+ * Kontakt-Anliegen aus dem schwebenden Kontakt-Widget und dem Hub-Kontakt-
+ * Modal: Kontaktaufnahme, Fehlermeldung, PM-Meldung und Feedback laufen in
+ * eine gemeinsame Admin-Queue („Kontakt"). Bewusst getrennt von den
+ * Compliance-Anfragen (legal_requests).
+ */
+return new class extends Migration
+{
+    public function up(): void
+    {
+        Schema::create('contact_messages', function (Blueprint $table) {
+            $table->id();
+
+            $table->string('portal', 40)->nullable();
+            $table->string('topic', 40)->default('contact');
+            $table->string('status', 40)->default('open');
+
+            $table->string('name')->nullable();
+            $table->string('email')->nullable();
+            $table->text('message')->nullable();
+
+            // Seite, von der das Widget abgeschickt wurde (Kontext für Fehler-/PM-Meldungen).
+            $table->string('page_url', 500)->nullable();
+            $table->json('payload')->nullable();
+            $table->string('requester_ip', 45)->nullable();
+            $table->foreignId('user_id')->nullable()->constrained()->nullOnDelete();
+
+            $table->foreignId('resolved_by_user_id')->nullable()->constrained('users')->nullOnDelete();
+            $table->text('admin_note')->nullable();
+            $table->timestamp('resolved_at')->nullable();
+
+            $table->timestamps();
+
+            $table->index(['status', 'topic']);
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::dropIfExists('contact_messages');
+    }
+};

database/migrations/2026_07_07_155322_add_web_archive_indexes_to_press_releases_table.php

@@ -0,0 +1,53 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+/**
+ * Composite-Indizes für die öffentlichen Web-Seiten (Start-/Kategorieseite,
+ * Ticker, EditorialClock): Alle Archiv-Abfragen filtern nach
+ * portal + language + status (+ SoftDelete) und sortieren/aggregieren über
+ * published_at. deleted_at gehört mit in den Index: Erst dadurch sind
+ * MAX()/COUNT()-Abfragen index-covering und der MySQL-Optimizer wählt den
+ * Index von selbst (gemessen: MAX(published_at) von ~900 ms auf ~4 ms).
+ */
+return new class extends Migration
+{
+    public function up(): void
+    {
+        Schema::table('press_releases', function (Blueprint $table): void {
+            if (! $this->hasIndex('press_releases', 'press_releases_web_archive_idx')) {
+                $table->index(
+                    ['portal', 'language', 'status', 'deleted_at', 'published_at'],
+                    'press_releases_web_archive_idx'
+                );
+            }
+
+            if (! $this->hasIndex('press_releases', 'press_releases_category_web_archive_idx')) {
+                $table->index(
+                    ['category_id', 'language', 'status', 'deleted_at', 'published_at'],
+                    'press_releases_category_web_archive_idx'
+                );
+            }
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::table('press_releases', function (Blueprint $table): void {
+            if ($this->hasIndex('press_releases', 'press_releases_category_web_archive_idx')) {
+                $table->dropIndex('press_releases_category_web_archive_idx');
+            }
+
+            if ($this->hasIndex('press_releases', 'press_releases_web_archive_idx')) {
+                $table->dropIndex('press_releases_web_archive_idx');
+            }
+        });
+    }
+
+    private function hasIndex(string $table, string $indexName): bool
+    {
+        return in_array($indexName, array_column(Schema::getIndexes($table), 'name'), true);
+    }
+};