Setting the Stage of a JobProgressReporter now updates progress instantly

src/Tgstation.Server.Host/Jobs/JobProgressReporter.cs

@@ -14,7 +14,18 @@ namespace Tgstation.Server.Host.Jobs
 		/// <summary>
 		/// The name of the current stage.
 		/// </summary>
-		public string StageName { get; set; }
+		public string StageName
+		{
+			get => stageName;
+			set
+			{
+				if (stageName == value)
+					return;
+
+				stageName = value;
+				callback(stageName, lastProgress);
+			}
+		}
 
 		/// <summary>
 		/// The <see cref="ILogger{TCategoryName}"/> for the <see cref="JobProgressReporter"/>.
@@ -26,6 +37,16 @@ namespace Tgstation.Server.Host.Jobs
 		/// </summary>
 		readonly Action<string, double?> callback;
 
+		/// <summary>
+		/// Backing field for <see cref="StageName"/>.
+		/// </summary>
+		string stageName;
+
+		/// <summary>
+		/// The last progress value pushed into the <see cref="callback"/>.
+		/// </summary>
+		double? lastProgress;
+
 		/// <summary>
 		/// The total progress reported so far in this section.
 		/// </summary>
@@ -66,6 +87,7 @@ namespace Tgstation.Server.Host.Jobs
 					sectionProgression = progress.Value;
 
 			callback(StageName, clampedProgress);
+			lastProgress = clampedProgress;
 		}
 
 		/// <summary>