Update README and localization files to remove "self-hosted" references

- Revised the README.md to simplify the description of Nexumi.
- Updated layout.tsx to reflect the change in the bot's description.
- Modified German and English localization files to remove "self-hosted" from the bot's description and terms of service.

landingpage/config.php

@@ -0,0 +1,24 @@
+<?php
+/**
+ * Public site config for Plesk (nexumi.de).
+ * No secrets here — only URLs and the Discord application client ID (public).
+ */
+return [
+    // Discord application client ID (used for bot invite link)
+    'bot_client_id' => '1529428118010462278',
+
+    // Dashboard (Traefik / WebUI)
+    'dashboard_url' => 'https://dashboard.nexumi.de',
+
+    // Optional support invite
+    'support_url' => 'https://discord.gg/RZ9JcQrPDz',
+
+    // Live stats from the WebUI public API (falls back to placeholders on failure)
+    'stats_api_url' => 'https://dashboard.nexumi.de/api/public/stats',
+
+    // Footer legal pages (still hosted on the dashboard app)
+    'status_url' => 'https://dashboard.nexumi.de/status',
+    'impressum_url' => 'https://dashboard.nexumi.de/impressum',
+    'privacy_url' => 'https://dashboard.nexumi.de/privacy',
+    'terms_url' => 'https://dashboard.nexumi.de/terms',
+];