feat: implement home page, business directory, and administrative management features with updated schema and API routes

admin/prisma/schema.prisma

@@ -35,6 +35,7 @@ model Business {
   id               String         @id @default(uuid())
   name             String
   category         String
+  suggestedCategory String?
   location         String         // Legacy location string
   countryId        String?
   city             String?
@@ -74,6 +75,19 @@ model Business {
   offers           Offer[]
   ratings          Rating[]
   country          Country?       @relation(fields: [countryId], references: [id])
+  categoryRef      BusinessCategory? @relation(fields: [categoryId], references: [id])
+  categoryId       String?
+}
+
+model BusinessCategory {
+  id         String     @id @default(uuid())
+  name       String     @unique
+  slug       String     @unique
+  icon       String? // Lucide icon name
+  isActive   Boolean    @default(true)
+  businesses Business[]
+  createdAt  DateTime   @default(now())
+  updatedAt  DateTime   @updatedAt
 }
 
 model Country {
@@ -93,7 +107,9 @@ model PricingPlan {
   tier        Plan     @unique
   name        String
   priceXOF    String
+  yearlyPriceXOF String?
   priceEUR    String
+  yearlyPriceEUR String?
   description String
   features    String[]
   offerLimit  Int      @default(1)