Added the catalogue models and seed to support phase 5 of the POC prototype in the Persistence package.

Packages/Persistence/Sources/Public/Models/Shop.swift

@@ -29,6 +29,14 @@ public struct Shop: Sendable, Equatable {
     public let returnsNote: String
     /// The shop's description of itself.
     public let about: String
+    /// Whether the seller sells as a private collector or as a business.
+    public let kind: Kind
+    /// The business's Chamber of Commerce (KvK) number, shown on its shop page.
+    public let kvkNumber: String?
+    /// The business's VAT (BTW) identifier.
+    public let vatID: String?
+    /// The business's registered name.
+    public let legalName: String?
 
     // MARK: Initializers
 
@@ -45,7 +53,11 @@ public struct Shop: Sendable, Equatable {
         handlingDays: Int,
         shipsNote: String,
         returnsNote: String,
-        about: String
+        about: String,
+        kind: Kind = .business,
+        kvkNumber: String? = nil,
+        vatID: String? = nil,
+        legalName: String? = nil
     ) {
         self.slug = slug
         self.name = name
@@ -60,6 +72,35 @@ public struct Shop: Sendable, Equatable {
         self.shipsNote = shipsNote
         self.returnsNote = returnsNote
         self.about = about
+        self.kind = kind
+        self.kvkNumber = kvkNumber
+        self.vatID = vatID
+        self.legalName = legalName
     }
 
 }
+
+// MARK: - Extensions
+
+public extension Shop {
+
+    // MARK: Computed
+
+    /// Whether the shop ships from a member state of the European Union, so a delivery within it crosses no customs border.
+    var shipsFromEU: Bool {
+        ListingFilter.euCountries.contains(country)
+    }
+
+}
+
+// MARK: - Enumerations
+
+public extension Shop {
+    /// How a seller sells, which decides what consumer law asks of them.
+    enum Kind: String, CaseIterable, Sendable {
+        /// A business: its KvK number shows on its shop page, and consumers get the 14-day right of withdrawal.
+        case business
+        /// A private collector selling their own books: no statutory right of withdrawal.
+        case privateSeller = "private"
+    }
+}