Fixed build progress title

app/MindWork AI Studio/Assistants/VisualBriefing/VisualBriefingAssistant.razor.Build.cs

@@ -57,7 +57,11 @@ public partial class VisualBriefingAssistant
     /// <summary>
     /// Gets the localized collapsed build-progress summary.
     /// </summary>
-    private string BuildProgressTitle => this.latestBuild?.Status switch
+    private string BuildProgressTitle
+    {
+        get
+        {
+            var title = this.latestBuild?.Status switch
             {
                 VisualBriefingBuildStatus.COMPLETED => $"{T("Build progress")} · {T("Completed")}",
                 VisualBriefingBuildStatus.FAILED => $"{T("Build progress")} · {T("Failed")}",
@@ -67,6 +71,11 @@ public partial class VisualBriefingAssistant
                 _ => $"{T("Build progress")} · {T("Running")}",
             };
 
+            var duration = this.CalculateBuildDuration(this.latestBuild?.Stages ?? []);
+            return duration > TimeSpan.Zero ? $"{title} · {FormatBuildDuration(duration)}" : title;
+        }
+    }
+
     /// <summary>
     /// Keeps the status stepper informational while allowing actions inside the active step.
     /// </summary>
@@ -307,12 +316,42 @@ public partial class VisualBriefingAssistant
     /// Applies a content-free live progress update for the selected project.
     /// </summary>
     private void BuildProgressChanged(Guid briefingId)
+    {
+        if (this.selectedBriefing?.BriefingId != briefingId)
+            return;
+
+        _ = this.InvokeAsync(() =>
         {
             if (this.selectedBriefing?.BriefingId != briefingId)
                 return;
 
             this.latestBuild = this.BuildProgressService.GetLatest(briefingId);
-        _ = this.InvokeAsync(this.StateHasChanged);
+            this.buildDurationReferenceUtc = DateTimeOffset.UtcNow;
+            this.StateHasChanged();
+        });
+    }
+
+    /// <summary>
+    /// Refreshes live build durations at most once per second while a selected stage is running.
+    /// </summary>
+    private async Task MonitorBuildDurationAsync(CancellationToken token)
+    {
+        using var timer = new PeriodicTimer(TimeSpan.FromSeconds(1));
+        try
+        {
+            while (await timer.WaitForNextTickAsync(token))
+                await this.InvokeAsync(() =>
+                {
+                    if (this.latestBuild?.Stages.Any(stage => stage.Status is VisualBriefingBuildStageStatus.RUNNING) != true)
+                        return;
+
+                    this.buildDurationReferenceUtc = DateTimeOffset.UtcNow;
+                    this.StateHasChanged();
+                });
+        }
+        catch (OperationCanceledException) when (token.IsCancellationRequested)
+        {
+        }
     }
 
     /// <summary>
@@ -408,16 +447,35 @@ public partial class VisualBriefingAssistant
                             ? T("Completed")
                             : T("Not started");
 
-        var duration = records
+        var duration = this.CalculateBuildDuration(records);
-            .Where(record => record.StartedAtUtc is not null)
+        return duration > TimeSpan.Zero ? $"{status} · {FormatBuildDuration(duration)}" : status;
-            .Aggregate(TimeSpan.Zero, (total, record) =>
-                total + ((record.FinishedAtUtc ?? DateTimeOffset.UtcNow) - record.StartedAtUtc!.Value));
-
-        return duration > TimeSpan.Zero
-            ? $"{status} · {duration.TotalSeconds:0.0} s"
-            : status;
     }
 
+    /// <summary>
+    /// Calculates active processing time without counting reused stages or time between resume attempts.
+    /// </summary>
+    private TimeSpan CalculateBuildDuration(IEnumerable<VisualBriefingBuildStageRecord> records) => records
+            .Where(record => record.StartedAtUtc is not null && record.Status is not VisualBriefingBuildStageStatus.SKIPPED)
+            .Aggregate(TimeSpan.Zero, (total, record) => total + this.CalculateStageDuration(record));
+
+    /// <summary>
+    /// Calculates one stage duration against the shared live timestamp.
+    /// </summary>
+    private TimeSpan CalculateStageDuration(VisualBriefingBuildStageRecord record)
+    {
+        var finishedAtUtc = record.Status is VisualBriefingBuildStageStatus.RUNNING ? this.buildDurationReferenceUtc : record.FinishedAtUtc;
+        if (record.StartedAtUtc is null || finishedAtUtc is null)
+            return TimeSpan.Zero;
+
+        var duration = finishedAtUtc.Value - record.StartedAtUtc.Value;
+        return duration > TimeSpan.Zero ? duration : TimeSpan.Zero;
+    }
+
+    /// <summary>
+    /// Formats a build duration using the current UI culture.
+    /// </summary>
+    private static string FormatBuildDuration(TimeSpan duration) => $"{duration.TotalSeconds:0.0} s";
+
     /// <summary>
     /// Gets the safe failure reason for a UI group.
     /// </summary>

app/MindWork AI Studio/Assistants/VisualBriefing/VisualBriefingAssistant.razor.cs

@@ -91,6 +91,9 @@ public partial class VisualBriefingAssistant : MSGComponentBase
     /// <summary>Stops the background source-status monitor.</summary>
     private readonly CancellationTokenSource sourceMonitorCancellation = new();
 
+    /// <summary>Stops the live build-duration monitor.</summary>
+    private readonly CancellationTokenSource buildDurationMonitorCancellation = new();
+
     /// <summary>Stores available and recoverable projects ordered by most recent modification.</summary>
     private IReadOnlyList<VisualBriefingProjectEntry> projects = [];
 
@@ -169,6 +172,9 @@ public partial class VisualBriefingAssistant : MSGComponentBase
     /// <summary>Stores the latest persistent or live build shown in the stepper.</summary>
     private VisualBriefingBuildRecord? latestBuild;
 
+    /// <summary>Stores the shared timestamp used to render consistent live build durations.</summary>
+    private DateTimeOffset buildDurationReferenceUtc = DateTimeOffset.UtcNow;
+
     /// <summary>Stores incompatible validated content offered for rebuild continuation.</summary>
     private Guid? reusableContentBuildId;
 
@@ -199,6 +205,7 @@ public partial class VisualBriefingAssistant : MSGComponentBase
         this.BuildProgressService.Changed += this.BuildProgressChanged;
         await this.ReloadListAsync();
         _ = this.MonitorSourceStatusAsync(this.sourceMonitorCancellation.Token);
+        _ = this.MonitorBuildDurationAsync(this.buildDurationMonitorCancellation.Token);
         var deferredInstruction = this.MessageBus.CheckDeferredMessages<string>(Event.SEND_TO_VISUAL_BRIEFING_ASSISTANT).FirstOrDefault();
 
         if (!string.IsNullOrWhiteSpace(deferredInstruction))
@@ -220,6 +227,8 @@ public partial class VisualBriefingAssistant : MSGComponentBase
     {
         this.sourceMonitorCancellation.Cancel();
         this.sourceMonitorCancellation.Dispose();
+        this.buildDurationMonitorCancellation.Cancel();
+        this.buildDurationMonitorCancellation.Dispose();
         this.MediaTranscriptionService.StateChanged -= this.MediaStateChanged;
         this.BuildProgressService.Changed -= this.BuildProgressChanged;
         base.DisposeResources();