fleshout backend

backend/Controllers/UserRequests.cs

@@ -0,0 +1,13 @@
+using System.ComponentModel.DataAnnotations;
+
+namespace Backend.Controllers;
+
+// Validation attributes must target the primary constructor parameters, not the
+// generated properties; MVC rejects record types with property-level metadata.
+public sealed record CreateUserRequest(
+    [Required][EmailAddress] string Email,
+    [Required][StringLength(100, MinimumLength = 1)] string DisplayName);
+
+public sealed record UpdateUserRequest(
+    [Required][EmailAddress] string Email,
+    [Required][StringLength(100, MinimumLength = 1)] string DisplayName);