Initial commit

api/Services/Contracts/ICaptchaVerifier.cs

@@ -0,0 +1,9 @@
+namespace Api.Services.Contracts
+{
+    public sealed record CaptchaVerdict(bool Success, string? Error, double? Score);
+
+    public interface ICaptchaVerifier
+    {
+        Task<CaptchaVerdict> VerifyAsync(string token, string? userIp, CancellationToken ct);
+    }
+}

api/Services/Contracts/IEmailSender.cs

@@ -0,0 +1,11 @@
+using Api.Models;
+
+namespace Api.Services.Contracts
+{
+    public interface IEmailSender
+    {
+        Task SendContactAsync(ContactRequest req, CancellationToken ct);
+        Task SendSubscribeAsync(SubscribeRequest req, CancellationToken ct);
+        Task SendFileDownloadNotificationAsync(string fileName, string? userIp, CancellationToken ct);
+    }
+}