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/symfony/css-selector/Node/Specificity.php

@@ -0,0 +1,69 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\CssSelector\Node;
+
+/**
+ * Represents a node specificity.
+ *
+ * This component is a port of the Python cssselect library,
+ * which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect.
+ *
+ * @see http://www.w3.org/TR/selectors/#specificity
+ *
+ * @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com>
+ *
+ * @internal
+ */
+class Specificity
+{
+    public const A_FACTOR = 100;
+    public const B_FACTOR = 10;
+    public const C_FACTOR = 1;
+
+    public function __construct(
+        private int $a,
+        private int $b,
+        private int $c,
+    ) {
+    }
+
+    public function plus(self $specificity): self
+    {
+        return new self($this->a + $specificity->a, $this->b + $specificity->b, $this->c + $specificity->c);
+    }
+
+    public function getValue(): int
+    {
+        return $this->a * self::A_FACTOR + $this->b * self::B_FACTOR + $this->c * self::C_FACTOR;
+    }
+
+    /**
+     * Returns -1 if the object specificity is lower than the argument,
+     * 0 if they are equal, and 1 if the argument is lower.
+     */
+    public function compareTo(self $specificity): int
+    {
+        if ($this->a !== $specificity->a) {
+            return $this->a > $specificity->a ? 1 : -1;
+        }
+
+        if ($this->b !== $specificity->b) {
+            return $this->b > $specificity->b ? 1 : -1;
+        }
+
+        if ($this->c !== $specificity->c) {
+            return $this->c > $specificity->c ? 1 : -1;
+        }
+
+        return 0;
+    }
+}