feat: add hotel and vehicle option site modules

Add full support for hotel group and vehicle option site management features:
- Define SQLAlchemy models and alembic migration for the new database tables
- Add default sample content entries in content.py
- Extend admin and public API routes to support the new modules
- Update seed script to populate default hotel and vehicle data
- Update all relevant documentation and test cases

app/routers/shared.py

@@ -1,6 +1,6 @@
 from sqlalchemy import select
 from sqlalchemy.orm import Session, selectinload
-from ..models import Campaign, CtaBanner, Destination, HeroSlide, MapImage, ThemeCard
+from ..models import Campaign, CtaBanner, Destination, HeroSlide, HotelGroup, MapImage, ThemeCard, VehicleOption
 from ..route_sections import route_section_dict, route_section_query
 from ..serializers import destination_dict, model_dict
 
@@ -11,12 +11,16 @@ def site_config(db: Session, active_only: bool, include_public_extras: bool = Tr
     map_stmt = select(MapImage).order_by(MapImage.createdAt.asc())
     theme_stmt = select(ThemeCard).order_by(ThemeCard.sortOrder.asc())
     cta_stmt = select(CtaBanner).order_by(CtaBanner.sortOrder.asc())
+    hotel_stmt = select(HotelGroup).order_by(HotelGroup.sortOrder.asc())
+    vehicle_stmt = select(VehicleOption).order_by(VehicleOption.sortOrder.asc())
     if active_only:
         hero_stmt = hero_stmt.where(HeroSlide.isActive.is_(True))
         destination_stmt = destination_stmt.where(Destination.isActive.is_(True))
         map_stmt = map_stmt.where(MapImage.isActive.is_(True))
         theme_stmt = theme_stmt.where(ThemeCard.isActive.is_(True))
         cta_stmt = cta_stmt.where(CtaBanner.isActive.is_(True))
+        hotel_stmt = hotel_stmt.where(HotelGroup.isActive.is_(True))
+        vehicle_stmt = vehicle_stmt.where(VehicleOption.isActive.is_(True))
 
     hero_slides = db.scalars(hero_stmt).all()
     destinations = db.scalars(destination_stmt).all()
@@ -37,4 +41,6 @@ def site_config(db: Session, active_only: bool, include_public_extras: bool = Tr
             route_sections = [section for section in route_sections if section.isActive]
         result["campaigns"] = [model_dict(item) for item in campaigns]
         result["routeSections"] = [route_section_dict(item, public=True) for item in route_sections]
-    return result
+        result["hotelGroups"] = [model_dict(item) for item in db.scalars(hotel_stmt).all()]
+        result["vehicleOptions"] = [model_dict(item) for item in db.scalars(vehicle_stmt).all()]
+    return result