Fixed the visual briefing build stepper to hide its unnecessary actions

app/MindWork AI Studio/Assistants/VisualBriefing/VisualBriefingBuildProgress.razor

@@ -1,6 +1,6 @@
 @inherits MSGComponentBase
 
-<MudExpansionPanels Class="mb-4" Elevation="0">
+<MudExpansionPanels Class="mb-4 visual-briefing-build-progress" Elevation="0">
     <MudExpansionPanel Text="@this.BuildProgressTitle" Expanded="@(this.Build?.Status is not VisualBriefingBuildStatus.COMPLETED)">
         <MudStepper ActiveIndex="@this.BuildStepperIndex"
                     CompletedStepColor="Color.Primary"
@@ -43,6 +43,9 @@
                     </MudStep>
                 }
             </ChildContent>
+            @* The build runs on its own. Overriding the actions with empty content keeps MudBlazor from
+               rendering its Previous, Next, Skip, and Complete buttons, which have nothing to do here. *@
+            <ActionContent></ActionContent>
         </MudStepper>
     </MudExpansionPanel>
 </MudExpansionPanels>

app/MindWork AI Studio/wwwroot/app.css

@@ -103,6 +103,13 @@
     display: initial !important;
 }
 
+/* The visual briefing build stepper only reports progress, so its actions are overridden with empty
+   content. MudBlazor still renders the surrounding action bar, which would leave an empty padded row.
+   Scoped on purpose: the Assistant Builder uses an interactive stepper that needs its buttons. */
+.visual-briefing-build-progress .mud-stepper-actions {
+    display: none;
+}
+
 /* Context div for inner scrolling component */
 .inner-scrolling-context {
     display: flex;