5.4 (Teil 3): page-header in users/* + contacts/* umgestellt

Sieben weitere Header auf <x-portal.page-header>:
- users (index), users/create, contacts/index, contacts/create (Standard;
  contacts/create mit bedingtem 'Firma vorausgewaehlt'-Badge via :meta)
- users/show, users/edit (ID + Portal + Aktiv/Inaktiv-Badges via :meta,
  dynamischer Titel/Beschreibung aus User-Daten)
- contacts/edit (ID + Portal-Label via :meta, ohne Beschreibung)

Component: break-words am H1 ergaenzt (fuer lange Namen/E-Mails in show/edit;
bei kurzen Titeln ein No-op). User-/Contact-Tests (129) gruen.

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

resources/views/livewire/admin/contacts/index.blade.php

@@ -367,21 +367,13 @@ new #[Layout('components.layouts.app'), Title('Kontakte')] class extends Compone
 
 <div class="space-y-8">
     {{-- ============== PAGE HEADER ============== --}}
-    <header class="page-header">
-        <div class="min-w-0">
-            <div class="flex items-center gap-3 mb-3 flex-nowrap whitespace-nowrap">
-                <span class="badge hub dot">{{ __('Admin Backend') }}</span>
-                <span class="eyebrow muted">{{ __('Administration · Pressekontakte') }}</span>
-            </div>
-            <h1 class="text-[30px] font-bold tracking-[-0.6px] leading-[1.15] m-0 text-[color:var(--color-ink)]">
-                {{ __('Kontakte') }}
-            </h1>
-            <p class="text-[13px] leading-[1.55] mt-2 m-0 max-w-[640px] text-[color:var(--color-ink-2)]">
-                {{ __('Pressekontakte aller Firmen über alle Portale hinweg.') }}
-            </p>
-        </div>
-
-        <div class="flex items-center gap-2 flex-shrink-0">
+    <x-portal.page-header
+        :badge="__('Admin Backend')"
+        :eyebrow="__('Administration · Pressekontakte')"
+        :title="__('Kontakte')"
+        :description="__('Pressekontakte aller Firmen über alle Portale hinweg.')"
+    >
+        <x-slot:actions>
             @if (\Illuminate\Support\Facades\Route::has('admin.contacts.create'))
                 <flux:button variant="primary" icon="plus" href="{{ route('admin.contacts.create') }}" wire:navigate>
                     {{ __('Neuer Kontakt') }}
@@ -391,8 +383,8 @@ new #[Layout('components.layouts.app'), Title('Kontakte')] class extends Compone
                     {{ __('Neuer Kontakt') }}
                 </flux:button>
             @endif
-        </div>
-    </header>
+        </x-slot:actions>
+    </x-portal.page-header>
 
     @if ($notification)
         <div x-data="{ show: true }" x-init="setTimeout(() => show = false, 3000)" x-show="show" x-transition