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/flysystem-local/composer.json

@@ -0,0 +1,25 @@
+{
+    "name": "league/flysystem-local",
+    "description": "Local filesystem adapter for Flysystem.",
+    "keywords": ["flysystem", "filesystem", "local", "file", "files"],
+    "type": "library",
+    "prefer-stable": true,
+    "autoload": {
+        "psr-4": {
+            "League\\Flysystem\\Local\\": ""
+        }
+    },
+    "require": {
+        "php": "^8.0.2",
+        "ext-fileinfo": "*",
+        "league/flysystem": "^3.0.0",
+        "league/mime-type-detection": "^1.0.0"
+    },
+    "license": "MIT",
+    "authors": [
+        {
+            "name": "Frank de Jonge",
+            "email": "info@frankdejonge.nl"
+        }
+    ]
+}