wip: implement model

.env

@@ -78,6 +78,10 @@ FEATURE_TRAVEL_SNAPSHOT=true
 APP_DEFAULT_EMAIL_FROM=[email protected]
 APP_DEFAULT_EMAIL_TO=[email protected]
 
+# Global common defaults
+APP_SEASON_WINTER_FROM=2026-10-01
+APP_SEASON_SUMMER_FROM=2026-05-01
+
 # Booking Configuration
 # Status for new bookings: 'F' (Fixed/Final), 'O' (Option - requires agency confirmation)
 # Use 'O' during beta phase, switch to 'F' for production