feat: add linked product info to promoted_get response

- Add include=inAppPurchaseV2,subscription to getPromotedPurchase API call
- Enrich formatPromotedPurchase() with linkedProduct info (name, productId, type)
- Add PromotedPurchaseIncludedResource model for included resource parsing

Author: zelentsov-dev

Sources/asc-mcp/Models/Marketing/PromotedPurchaseModels.swift

@@ -11,6 +11,22 @@ public struct ASCPromotedPurchasesResponse: Codable, Sendable {
 /// Single promoted purchase response
 public struct ASCPromotedPurchaseResponse: Codable, Sendable {
     public let data: ASCPromotedPurchase
+    public let included: [PromotedPurchaseIncludedResource]?
+}
+
+/// Included resource in promoted purchase response (IAP or subscription)
+public struct PromotedPurchaseIncludedResource: Codable, Sendable {
+    public let type: String
+    public let id: String
+    public let attributes: PromotedPurchaseIncludedAttributes?
+}
+
+/// Attributes for included IAP/subscription resources
+public struct PromotedPurchaseIncludedAttributes: Codable, Sendable {
+    public let name: String?
+    public let productId: String?
+    public let inAppPurchaseType: String?
+    public let state: String?
 }
 
 /// Promoted purchase resource

Sources/asc-mcp/Workers/PromotedPurchasesWorker/PromotedPurchasesWorker+Handlers.swift

@@ -74,10 +74,11 @@ extension PromotedPurchasesWorker {
         do {
             let response: ASCPromotedPurchaseResponse = try await httpClient.get(
                 "/v1/promotedPurchases/\(promotedPurchaseId)",
+                parameters: ["include": "inAppPurchaseV2,subscription"],
                 as: ASCPromotedPurchaseResponse.self
             )
 
-            let purchase = formatPromotedPurchase(response.data)
+            let purchase = formatPromotedPurchase(response.data, included: response.included)
 
             let result = [
                 "success": true,
@@ -254,13 +255,25 @@ extension PromotedPurchasesWorker {
 
     // MARK: - Formatting
 
-    private func formatPromotedPurchase(_ purchase: ASCPromotedPurchase) -> [String: Any] {
-        return [
+    private func formatPromotedPurchase(_ purchase: ASCPromotedPurchase, included: [PromotedPurchaseIncludedResource]? = nil) -> [String: Any] {
+        var result: [String: Any] = [
             "id": purchase.id,
             "type": purchase.type,
             "visibleForAllUsers": purchase.attributes?.visibleForAllUsers.jsonSafe ?? NSNull(),
             "enabled": purchase.attributes?.enabled.jsonSafe ?? NSNull(),
             "state": purchase.attributes?.state.jsonSafe ?? NSNull()
         ]
+
+        // Add linked product info from included resources
+        if let included = included, let resource = included.first {
+            result["linkedProduct"] = [
+                "type": resource.type,
+                "id": resource.id,
+                "name": resource.attributes?.name.jsonSafe ?? NSNull(),
+                "productId": resource.attributes?.productId.jsonSafe ?? NSNull()
+            ] as [String: Any]
+        }
+
+        return result
     }
 }