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/seed.py

@@ -8,7 +8,7 @@ from urllib.parse import quote
 from sqlalchemy import delete, select
 from sqlalchemy.orm import Session
 from .auth import hash_password
-from .content import ALIASES, CAMPAIGNS, CTAS, DESTINATIONS, HERO_SLIDES, THEMES
+from .content import ALIASES, CAMPAIGNS, CTAS, DESTINATIONS, HERO_SLIDES, HOTEL_GROUPS, THEMES, VEHICLE_OPTIONS
 from .database import Base, SessionLocal, engine
 from .models import (
     AdminUser,
@@ -18,6 +18,7 @@ from .models import (
     Destination,
     DestinationAlias,
     HeroSlide,
+    HotelGroup,
     MediaAsset,
     Product,
     ProductImage,
@@ -25,6 +26,7 @@ from .models import (
     RouteSectionProduct,
     SiteVersion,
     ThemeCard,
+    VehicleOption,
     utc_now,
 )
 from .route_sections import ROUTE_SECTION_DEFAULTS
@@ -100,7 +102,7 @@ def load_products() -> list[dict]:
 
 def reset_guizhou_content(db: Session) -> dict:
     products = load_products()
-    for model in [SiteVersion, CampaignProduct, RouteSectionProduct, Campaign, RouteSection, ProductImage, Product, CtaBanner, ThemeCard, HeroSlide, DestinationAlias, Destination, MediaAsset]:
+    for model in [SiteVersion, CampaignProduct, RouteSectionProduct, Campaign, RouteSection, ProductImage, Product, VehicleOption, HotelGroup, CtaBanner, ThemeCard, HeroSlide, DestinationAlias, Destination, MediaAsset]:
         db.execute(delete(model))
     db.flush()
 
@@ -136,6 +138,27 @@ def reset_guizhou_content(db: Session) -> dict:
         create_media(db, image, "cta", alt)
         db.add(CtaBanner(alt=alt, image=image, targetType=target_type, targetValue=target_value, sortOrder=index))
 
+    for index, group in enumerate(HOTEL_GROUPS):
+        create_media(db, group["image"], "hotel-group", group["title"])
+        db.add(
+            HotelGroup(
+                title=group["title"],
+                description=group.get("description"),
+                image=group.get("image"),
+                sortOrder=index,
+            )
+        )
+
+    for index, option in enumerate(VEHICLE_OPTIONS):
+        create_media(db, option["image"], "vehicle-option", option["title"])
+        db.add(
+            VehicleOption(
+                title=option["title"],
+                description=option.get("description"),
+                image=option.get("image"),
+                sortOrder=index,
+            )
+        )
     for product in products:
         create_media(db, product.get("image"), "product", product["title"])
         matched_destination = product.get("destinationName") if product.get("destinationName") in destination_map else None
@@ -203,6 +226,8 @@ def reset_guizhou_content(db: Session) -> dict:
             "themeCards": len(THEMES),
             "products": len(products),
             "routeSections": len(ROUTE_SECTION_DEFAULTS),
+            "hotelGroups": len(HOTEL_GROUPS),
+            "vehicleOptions": len(VEHICLE_OPTIONS),
         },
     )
     db.add(snapshot)
@@ -214,6 +239,8 @@ def reset_guizhou_content(db: Session) -> dict:
         "ctaBanners": len(CTAS),
         "products": len(products),
         "routeSections": len(ROUTE_SECTION_DEFAULTS),
+        "hotelGroups": len(HOTEL_GROUPS),
+        "vehicleOptions": len(VEHICLE_OPTIONS),
         "siteVersionId": snapshot.id,
     }