tests fixes and sprints work

src/Cli/StellaOps.Cli/Commands/CheckpointCommands.cs

@@ -61,7 +61,7 @@ public static class CheckpointCommands
         var outputOption = new Option<string>("--output", "-o")
         {
             Description = "Output path for checkpoint bundle",
-            IsRequired = true
+            Required = true
         };
 
         var includeTilesOption = new Option<bool>("--include-tiles")
@@ -109,7 +109,7 @@ public static class CheckpointCommands
         var inputOption = new Option<string>("--input", "-i")
         {
             Description = "Path to checkpoint bundle",
-            IsRequired = true
+            Required = true
         };
 
         var verifySignatureOption = new Option<bool>("--verify-signature")