Stand: SMTP-Test, Admin-Mail-Tab, Notifiable-Fix, Lazy-Quill

- Fix: Notifiable-Trait zum User-Model hinzugefuegt (behebt notify()-500er)
- Installer: SMTP-Verbindungstest mit EsmtpTransport + Ueberspringen-Link
- Admin: Neuer E-Mail-Tab mit SMTP-Konfiguration + Verbindungstest
- Admin: Lazy Quill-Initialisierung (nur sichtbare Locale wird geladen)
- Uebersetzungen: 17 neue Mail-Keys in allen 6 Sprachen

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

vendor/league/uri-interfaces/Contracts/HostInterface.php

@@ -0,0 +1,59 @@
+<?php
+
+/**
+ * League.Uri (https://uri.thephpleague.com)
+ *
+ * (c) Ignace Nyamagana Butera <nyamsprod@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace League\Uri\Contracts;
+
+/**
+ * @method string|null encoded() returns RFC3986 encoded host
+ */
+interface HostInterface extends UriComponentInterface
+{
+    /**
+     * Returns the ascii representation.
+     */
+    public function toAscii(): ?string;
+
+    /**
+     * Returns the unicode representation.
+     */
+    public function toUnicode(): ?string;
+
+    /**
+     * Returns the IP version.
+     *
+     * If the host is a not an IP this method will return null
+     */
+    public function getIpVersion(): ?string;
+
+    /**
+     * Returns the IP component If the Host is an IP address.
+     *
+     * If the host is a not an IP this method will return null
+     */
+    public function getIp(): ?string;
+
+    /**
+     * Tells whether the host is a domain name.
+     */
+    public function isDomain(): bool;
+
+    /**
+     * Tells whether the host is an IP Address.
+     */
+    public function isIp(): bool;
+
+    /**
+     * Tells whether the host is a registered name.
+     */
+    public function isRegisteredName(): bool;
+}