feat: widget partner system with JS embed, isHidden toggle, category/neighborhood filters

prisma/schema.prisma

@@ -270,6 +270,7 @@ model WidgetPartner {
   url              String
   neighborhoodSlug String?
   isActive         Boolean  @default(true)
+  isHidden         Boolean  @default(false)
   createdAt        DateTime @default(now())
   updatedAt        DateTime @updatedAt
 }