sprints work

src/Scanner/__Libraries/StellaOps.Scanner.Storage/Postgres/PostgresFacetSealStore.cs

@@ -26,6 +26,7 @@ public sealed class PostgresFacetSealStore : IFacetSealStore
 {
     private readonly NpgsqlDataSource _dataSource;
     private readonly ILogger<PostgresFacetSealStore> _logger;
+    private readonly TimeProvider _timeProvider;
 
     private const string SelectColumns = """
         combined_merkle_root, image_digest, schema_version, created_at,
@@ -96,12 +97,15 @@ public sealed class PostgresFacetSealStore : IFacetSealStore
     /// </summary>
     /// <param name="dataSource">The Npgsql data source.</param>
     /// <param name="logger">Logger instance.</param>
+    /// <param name="timeProvider">Time provider for deterministic time.</param>
     public PostgresFacetSealStore(
         NpgsqlDataSource dataSource,
-        ILogger<PostgresFacetSealStore>? logger = null)
+        ILogger<PostgresFacetSealStore>? logger = null,
+        TimeProvider? timeProvider = null)
     {
         _dataSource = dataSource ?? throw new ArgumentNullException(nameof(dataSource));
         _logger = logger ?? Microsoft.Extensions.Logging.Abstractions.NullLogger<PostgresFacetSealStore>.Instance;
+        _timeProvider = timeProvider ?? TimeProvider.System;
     }
 
     /// <inheritdoc/>
@@ -241,7 +245,7 @@ public sealed class PostgresFacetSealStore : IFacetSealStore
         ct.ThrowIfCancellationRequested();
         ArgumentOutOfRangeException.ThrowIfNegativeOrZero(keepAtLeast);
 
-        var cutoff = DateTimeOffset.UtcNow - retentionPeriod;
+        var cutoff = _timeProvider.GetUtcNow() - retentionPeriod;
 
         await using var conn = await _dataSource.OpenConnectionAsync(ct).ConfigureAwait(false);
         await using var cmd = new NpgsqlCommand(PurgeSql, conn);