Enhance verification module with improved command handling and localization

- Updated the verification command to utilize a new `ephemeral` utility for consistent ephemeral message replies.
- Refactored the `buildVerificationPanel` function to include localization support for panel titles and descriptions.
- Added permission checks to ensure the bot can post in the designated verification channel.
- Introduced a new verification queue in the queue management system for better handling of verification tasks.
- Updated localization files to include new keys for verification-related messages in both English and German.

.env.example

@@ -19,12 +19,12 @@ BACKUP_RETENTION_DAYS=14
 BACKUP_CRON=0 3 * * *
 BACKUP_DIR=/backups
 HEALTH_PORT=8080
-# Bot health stays internal (no published port). Override only if you expose it.
+# Internal bot health/metrics base (Docker healthcheck). Captcha links use WEBUI_URL.
 PUBLIC_BASE_URL=http://localhost:8080
 TWITCH_CLIENT_ID=
 TWITCH_CLIENT_SECRET=
 
-# WebUI (apps/webui) – public URL behind Traefik
+# WebUI (apps/webui) – public URL behind Traefik (also used for captcha verification links)
 WEBUI_URL=https://dashboard.nexumi.de
 # Discord Developer Portal OAuth2 redirect:
 #   https://dashboard.nexumi.de/api/auth/callback