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/sabberworm/php-css-parser/src/Position/Position.php

@@ -0,0 +1,55 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Sabberworm\CSS\Position;
+
+/**
+ * Provides a standard reusable implementation of `Positionable`.
+ *
+ * @internal
+ *
+ * @phpstan-require-implements Positionable
+ */
+trait Position
+{
+    /**
+     * @var int<1, max>|null
+     */
+    protected $lineNumber;
+
+    /**
+     * @var int<0, max>|null
+     */
+    protected $columnNumber;
+
+    /**
+     * @return int<1, max>|null
+     */
+    public function getLineNumber(): ?int
+    {
+        return $this->lineNumber;
+    }
+
+    /**
+     * @return int<0, max>|null
+     */
+    public function getColumnNumber(): ?int
+    {
+        return $this->columnNumber;
+    }
+
+    /**
+     * @param int<1, max>|null $lineNumber
+     * @param int<0, max>|null $columnNumber
+     *
+     * @return $this fluent interface
+     */
+    public function setPosition(?int $lineNumber, ?int $columnNumber = null): Positionable
+    {
+        $this->lineNumber = $lineNumber;
+        $this->columnNumber = $columnNumber;
+
+        return $this;
+    }
+}

vendor/sabberworm/php-css-parser/src/Position/Positionable.php

@@ -0,0 +1,31 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Sabberworm\CSS\Position;
+
+/**
+ * Represents a CSS item that may have a position in the source CSS document (line number and possibly column number).
+ *
+ * A standard implementation of this interface is available in the `Position` trait.
+ */
+interface Positionable
+{
+    /**
+     * @return int<1, max>|null
+     */
+    public function getLineNumber(): ?int;
+
+    /**
+     * @return int<0, max>|null
+     */
+    public function getColumnNumber(): ?int;
+
+    /**
+     * @param int<1, max>|null $lineNumber
+     * @param int<0, max>|null $columnNumber
+     *
+     * @return $this fluent interface
+     */
+    public function setPosition(?int $lineNumber, ?int $columnNumber = null): Positionable;
+}