Should work

Sources/OpenFoodFactsSDK/OpenFoodFactsClient.swift

@@ -137,13 +137,15 @@ public struct ProductResponseEnvelope: Sendable, Decodable {
 }
 
 public struct SearchResponseEnvelope: Sendable, Decodable {
-	public let count: Int?
-	public let page: Int?
-	public let pageSize: Int?
-	public let products: [Product]?
+	public let count: Int
+	public let page: Int
+	public let pageSize: Int
+	public let products: [Product]
+	public let pageCount: Int
 
 	private enum CodingKeys: String, CodingKey {
 		case count, page, products
 		case pageSize = "page_size"
+		case pageCount = "page_count"
 	}
 }

Tests/OpenFoodFactsTests/OpenFoodFactsTests.swift

@@ -40,7 +40,7 @@ final class OpenFoodFactsTests: XCTestCase {
 			.sort(.popularity),
 		)
 
-		let results = response.products ?? []
+		let results = response.products
 
 		let jsonResults = try JSONEncoder().encode(results)
 		try jsonResults.write(to: .init(filePath: "./jsonResults.json"))