Refactor: Rename DeleteEndpointAuthProcedure to Command

Renamed DeleteEndpointAuthProcedure to DeleteEndpointAuthCommand across the codebase, including controller, handler, and tests, to improve naming consistency and align with CQRS conventions for write operations.

tests/ReC.Tests/Application/EndpointAuth/EndpointAuthProcedureTests.cs

@@ -47,7 +47,7 @@ public class EndpointAuthProcedureTests : RecApplicationTestBase
     [Test]
     public async Task DeleteEndpointAuthProcedure_runs_via_mediator()
     {
-        var procedure = new DeleteEndpointAuthProcedure { Start = 3, End = 4, Force = false };
+        var procedure = new DeleteEndpointAuthCommand { Start = 3, End = 4, Force = false };
 
         var (sender, scope) = CreateScopedSender();
         using var _ = scope;