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/doctrine/inflector/src/Rules/Spanish/Rules.php

@@ -0,0 +1,31 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Doctrine\Inflector\Rules\Spanish;
+
+use Doctrine\Inflector\Rules\Patterns;
+use Doctrine\Inflector\Rules\Ruleset;
+use Doctrine\Inflector\Rules\Substitutions;
+use Doctrine\Inflector\Rules\Transformations;
+
+final class Rules
+{
+    public static function getSingularRuleset(): Ruleset
+    {
+        return new Ruleset(
+            new Transformations(...Inflectible::getSingular()),
+            new Patterns(...Uninflected::getSingular()),
+            (new Substitutions(...Inflectible::getIrregular()))->getFlippedSubstitutions()
+        );
+    }
+
+    public static function getPluralRuleset(): Ruleset
+    {
+        return new Ruleset(
+            new Transformations(...Inflectible::getPlural()),
+            new Patterns(...Uninflected::getPlural()),
+            new Substitutions(...Inflectible::getIrregular())
+        );
+    }
+}