feat(ui): color and acknowledge pinned log errors

Add independent AppLog message types and explicit Class 1/2 severity. Wrap and color log rows, pin Class 1 above Class 2, and let acknowledgement return entries to the current-launch timeline without changing file format or rotation.

Ref: https://logtape.org/manual/levels

Themes/Controls.xaml

@@ -178,6 +178,30 @@
         <Setter Property="Margin" Value="10,0,0,6"/>
     </Style>
 
+    <Style x:Key="AppLogEntryText" TargetType="TextBlock">
+        <Setter Property="Foreground" Value="{StaticResource Brush.OnSurfaceVariant}"/>
+        <Setter Property="FontSize" Value="10"/>
+        <Setter Property="TextWrapping" Value="Wrap"/>
+        <Style.Triggers>
+            <DataTrigger Binding="{Binding Type}" Value="{x:Static Helpers:AppLogMessageType.Success}">
+                <Setter Property="Foreground" Value="{StaticResource Brush.Positive}"/>
+            </DataTrigger>
+            <DataTrigger Binding="{Binding Type}" Value="{x:Static Helpers:AppLogMessageType.Warning}">
+                <Setter Property="Foreground" Value="{StaticResource Brush.Secondary}"/>
+            </DataTrigger>
+            <DataTrigger Binding="{Binding Type}" Value="{x:Static Helpers:AppLogMessageType.Error}">
+                <Setter Property="Foreground" Value="{StaticResource Brush.Error}"/>
+            </DataTrigger>
+            <MultiDataTrigger>
+                <MultiDataTrigger.Conditions>
+                    <Condition Binding="{Binding Type}" Value="{x:Static Helpers:AppLogMessageType.Error}"/>
+                    <Condition Binding="{Binding ErrorClass}" Value="{x:Static Helpers:AppLogErrorClass.Class2}"/>
+                </MultiDataTrigger.Conditions>
+                <Setter Property="Foreground" Value="{StaticResource Brush.Attention}"/>
+            </MultiDataTrigger>
+        </Style.Triggers>
+    </Style>
+
     <!-- A property-panel action: bordered, quiet, 11px normal weight. The accent-filled YtButton
          (white semi-bold 13px) made secondary actions like "Reset to built-in" the loudest text in
          the panel, which is backwards. -->