Don't seperately parse status, let the JSON decoder do this for now

test/MissionControl.Server.Tests/Endpoints/Missions/MissionLaunches/CreateMissionLaunchTests.cs

@@ -18,7 +18,7 @@ public class CreateMissionLaunchTests
         {
             MissionId = Guid.NewGuid(),
             ScheduledFor = DateTimeOffset.UtcNow,
-            Status = "Pending",
+            Status = MissionLaunchStatus.Pending,
         };
 
         await endpoint.HandleAsync(request, CancellationToken.None);
@@ -27,4 +27,21 @@ public class CreateMissionLaunchTests
 
         (await database.Context.MissionLaunches.AnyAsync()).ShouldBeFalse();
     }
+
+    [Fact]
+    public void Rejects_empty_mission_id_guid()
+    {
+        var validator = new CreateMissionLaunchRequestValidator();
+
+        var result = validator.Validate(new CreateMissionLaunchRequest
+        {
+            MissionId = Guid.Empty,
+            ScheduledFor = default,
+            Status = MissionLaunchStatus.Pending,
+        });
+
+        result.IsValid.ShouldBeFalse();
+        result.Errors.ShouldContain(e => e.PropertyName == nameof(CreateMissionLaunchRequest.MissionId));
+    }
+
 }