release orchestrator v1 draft and build fixes

src/Cli/StellaOps.Cli/Services/PromotionAssembler.cs

@@ -32,12 +32,18 @@ internal sealed partial class PromotionAssembler : IPromotionAssembler
     private readonly HttpClient _httpClient;
     private readonly ICryptoHash _cryptoHash;
     private readonly ILogger<PromotionAssembler> _logger;
+    private readonly TimeProvider _timeProvider;
 
-    public PromotionAssembler(HttpClient httpClient, ICryptoHash cryptoHash, ILogger<PromotionAssembler> logger)
+    public PromotionAssembler(
+        HttpClient httpClient,
+        ICryptoHash cryptoHash,
+        ILogger<PromotionAssembler> logger,
+        TimeProvider? timeProvider = null)
     {
         _httpClient = httpClient ?? throw new ArgumentNullException(nameof(httpClient));
         _cryptoHash = cryptoHash ?? throw new ArgumentNullException(nameof(cryptoHash));
         _logger = logger ?? throw new ArgumentNullException(nameof(logger));
+        _timeProvider = timeProvider ?? TimeProvider.System;
     }
 
     public async Task<PromotionAssembleResult> AssembleAsync(
@@ -171,7 +177,7 @@ internal sealed partial class PromotionAssembler : IPromotionAssembler
                 From = request.FromEnvironment,
                 To = request.ToEnvironment,
                 Actor = request.Actor ?? Environment.UserName,
-                Timestamp = DateTimeOffset.UtcNow,
+                Timestamp = _timeProvider.GetUtcNow(),
                 Pipeline = request.Pipeline,
                 Ticket = request.Ticket,
                 Notes = request.Notes
@@ -527,7 +533,7 @@ internal sealed partial class PromotionAssembler : IPromotionAssembler
             RekorEntry = rekorEntry,
             AuditId = auditId,
             SignerKeyId = signerKeyId,
-            SignedAt = DateTimeOffset.UtcNow,
+            SignedAt = _timeProvider.GetUtcNow(),
             Warnings = warnings
         };
     }