Added progress messages and quick access to exported files (#1112)

app/MindWork AI Studio/Assistants/AssistantBase.razor

@@ -69,16 +69,25 @@
 
             @if (this.ShowDedicatedProgress && this.IsProcessing)
             {
-                @if (string.IsNullOrWhiteSpace(this.ProgressText))
+                @if (this.processingStartedAt is null && string.IsNullOrWhiteSpace(this.ProgressText))
                 {
                     <MudProgressLinear Color="Color.Primary" Indeterminate="true" Class="mb-6" />
                 }
                 else
                 {
                     <MudProgressLinear Color="Color.Primary" Indeterminate="true" Class="mb-2" />
-                    <MudText Typo="Typo.body2" Class="mb-6">
-                        @this.ProgressText
-                    </MudText>
+                    <MudStack Row="@true" AlignItems="@AlignItems.Center" Spacing="3" Class="mb-6">
+                        @if (this.processingStartedAt is { } startedAt)
+                        {
+                            <ElapsedTime Start="@startedAt"/>
+                        }
+                        @if (!string.IsNullOrWhiteSpace(this.ProgressText))
+                        {
+                            <MudText Typo="Typo.body2">
+                                @this.ProgressText
+                            </MudText>
+                        }
+                    </MudStack>
                 }
             }