feat: add destination page configurable modules

This commit adds full support for two new destination page modules: a hero banner section and categorized destination regions.

Changes include:
- New SQLAlchemy models and alembic migration for DestinationHero and DestinationRegion tables
- Updated Pydantic SiteConfigPatchIn schema with new optional fields
- Integrated admin CRUD support for the new modules
- Added default seed data for Guizhou destination regions and hero content
- Exposed active modules via public site config API
- Added comprehensive test coverage for admin and public endpoints

app/routers/admin.py

@@ -19,6 +19,8 @@ from ..models import (
     Campaign,
     CtaBanner,
     Destination,
+    DestinationHero,
+    DestinationRegion,
     HeroSlide,
     HotelGroup,
     Lead,
@@ -68,6 +70,24 @@ SITE_CONFIG_MODULES = {
         "none_to_empty": set(),
         "create_defaults": {"isHot": False},
     },
+    "destinationHero": {
+        "model": DestinationHero,
+        "entity": "destination_hero",
+        "primary": "title",
+        "fields": {"title", "kicker", "image", "isActive", "sortOrder"},
+        "none_to_empty": set(),
+        "empty_to_none": {"kicker", "image"},
+        "create_defaults": {"kicker": None, "image": None},
+    },
+    "destinationRegions": {
+        "model": DestinationRegion,
+        "entity": "destination_region",
+        "primary": "label",
+        "fields": {"label", "keyword", "spots", "isActive", "sortOrder"},
+        "none_to_empty": set(),
+        "empty_to_none": {"keyword", "spots"},
+        "create_defaults": {"keyword": None, "spots": None},
+    },
     "map": {
         "model": MapImage,
         "entity": "map_image",
@@ -655,6 +675,14 @@ def admin_site_config(_user: AdminUser = Depends(require_admin), db: Session = D
             for item in db.scalars(select(HeroSlide).order_by(HeroSlide.sortOrder.asc())).all()
         ],
         "destinations": [destination_dict(item) for item in destinations],
+        "destinationHero": [
+            model_dict(item)
+            for item in db.scalars(select(DestinationHero).order_by(DestinationHero.sortOrder.asc())).all()
+        ],
+        "destinationRegions": [
+            model_dict(item)
+            for item in db.scalars(select(DestinationRegion).order_by(DestinationRegion.sortOrder.asc())).all()
+        ],
         "map": [
             map_image_admin_dict(item)
             for item in db.scalars(select(MapImage).order_by(MapImage.createdAt.asc())).all()

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, HotelGroup, MapImage, ThemeCard, VehicleOption
+from ..models import Campaign, CtaBanner, Destination, DestinationHero, DestinationRegion, HeroSlide, HotelGroup, MapImage, ThemeCard, VehicleOption
 from ..route_sections import route_section_dict, route_section_query
 from ..serializers import destination_dict, hotel_group_dict, model_dict
 
@@ -8,6 +8,8 @@ from ..serializers import destination_dict, hotel_group_dict, model_dict
 def site_config(db: Session, active_only: bool, include_public_extras: bool = True) -> dict:
     hero_stmt = select(HeroSlide).order_by(HeroSlide.sortOrder.asc())
     destination_stmt = select(Destination).options(selectinload(Destination.aliases)).order_by(Destination.sortOrder.asc())
+    destination_hero_stmt = select(DestinationHero).order_by(DestinationHero.sortOrder.asc())
+    destination_region_stmt = select(DestinationRegion).order_by(DestinationRegion.sortOrder.asc())
     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())
@@ -16,6 +18,8 @@ def site_config(db: Session, active_only: bool, include_public_extras: bool = Tr
     if active_only:
         hero_stmt = hero_stmt.where(HeroSlide.isActive.is_(True))
         destination_stmt = destination_stmt.where(Destination.isActive.is_(True))
+        destination_hero_stmt = destination_hero_stmt.where(DestinationHero.isActive.is_(True))
+        destination_region_stmt = destination_region_stmt.where(DestinationRegion.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))
@@ -24,12 +28,16 @@ def site_config(db: Session, active_only: bool, include_public_extras: bool = Tr
 
     hero_slides = db.scalars(hero_stmt).all()
     destinations = db.scalars(destination_stmt).all()
+    destination_hero = db.scalars(destination_hero_stmt).all()
+    destination_regions = db.scalars(destination_region_stmt).all()
     map_images = db.scalars(map_stmt).all()
     themes = db.scalars(theme_stmt).all()
     cta_banners = db.scalars(cta_stmt).all()
     result = {
         "heroSlides": [model_dict(item) for item in hero_slides],
         "destinations": [destination_dict(item) for item in destinations],
+        "destinationHero": [model_dict(item) for item in destination_hero],
+        "destinationRegions": [model_dict(item) for item in destination_regions],
         "map": [model_dict(item) for item in map_images],
         "themes": [model_dict(item) for item in themes],
         "ctaBanners": [model_dict(item) for item in cta_banners],
@@ -43,4 +51,4 @@ def site_config(db: Session, active_only: bool, include_public_extras: bool = Tr
         result["routeSections"] = [route_section_dict(item, public=True) for item in route_sections]
         result["hotelGroups"] = [hotel_group_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
+    return result