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/thecodingmachine/safe/generated/8.2/errorfunc.php

@@ -0,0 +1,28 @@
+<?php
+
+namespace Safe;
+
+use Safe\Exceptions\ErrorfuncException;
+
+/**
+ * @param string $message
+ * @param 0|1|2|3|4 $message_type
+ * @param null|string $destination
+ * @param null|string $additional_headers
+ * @throws ErrorfuncException
+ *
+ */
+function error_log(string $message, int $message_type = 0, ?string $destination = null, ?string $additional_headers = null): void
+{
+    error_clear_last();
+    if ($additional_headers !== null) {
+        $safeResult = \error_log($message, $message_type, $destination, $additional_headers);
+    } elseif ($destination !== null) {
+        $safeResult = \error_log($message, $message_type, $destination);
+    } else {
+        $safeResult = \error_log($message, $message_type);
+    }
+    if ($safeResult === false) {
+        throw ErrorfuncException::createFromPhpError();
+    }
+}