wip: api client for bpn-connect

.env

@@ -48,6 +48,9 @@ MAILJET_DEFAULT_LIST_ID=
 MAILJET_WEBHOOK_BASIC_PASSWORD=secret
 APP_NEWSLETTER_CONFIRMATION_TTL_HOURS=1
 
+BPN_CONNECT_BASE_URL=https://bpn-connect.ep-reisen.app
+BPN_CONNECT_API_KEY=
+
 APP_BPN_USER=
 APP_BPN_PASSWORD=
 APP_BPN_IP=
@@ -72,9 +75,6 @@ APP_TRAVEL_PREFER_REMOTE=false
 APP_TRAVEL_ENABLE_FALLBACK=true
 APP_TRAVEL_SNAPSHOT_RETENTION_BUFFER_DAYS=14
 
-# Feature Flags
-FEATURE_TRAVEL_SNAPSHOT=true
-
 # Emails
 APP_DEFAULT_EMAIL_FROM=[email protected]
 APP_DEFAULT_EMAIL_TO=[email protected]
@@ -88,8 +88,6 @@ APP_SEASON_SUMMER_FROM=2026-05-01
 # Use 'O' during beta phase, switch to 'F' for production
 DEFAULT_BOOKING_STATUS=F
 
-API_KEYS=
-
 XML_EXPORT_PATH="%kernel.project_dir%/var/xmlexport"
 XML_EXPORT_CONTINGENTS_PATH="%kernel.project_dir%/var/xmlexportzimmer"
 JSON_EXPORT_PATH="%kernel.project_dir%/var/jsonexport"