style(ui): polish list sidebar, kbd chips, and session terminal

- Introduce .list-count style for sidebar badges (brighter on active row).
- Bind list header More button to the correct OpenSettingsCommand.
- Give the per-list gear the standard icon-btn look.
- Center-align kbd chip content and title-bar/icon button content.
- Drop the kind-marker column in SessionTerminal and always show the
  scrollbar so the terminal feels like one.

src/ClaudeDo.Ui/Design/IslandStyles.axaml

@@ -95,6 +95,8 @@
     <Setter Property="BorderThickness" Value="0" />
     <Setter Property="CornerRadius"    Value="0" />
     <Setter Property="Foreground"      Value="{StaticResource TextMuteBrush}" />
+    <Setter Property="HorizontalContentAlignment" Value="Center" />
+    <Setter Property="VerticalContentAlignment"   Value="Center" />
   </Style>
   <Style Selector="Button.title-ctrl:pointerover /template/ ContentPresenter">
     <Setter Property="Background"               Value="{StaticResource Surface2Brush}" />
@@ -221,6 +223,8 @@
     <Setter Property="BorderThickness" Value="0" />
     <Setter Property="CornerRadius"    Value="6" />
     <Setter Property="Foreground"      Value="{StaticResource TextMuteBrush}" />
+    <Setter Property="HorizontalContentAlignment" Value="Center" />
+    <Setter Property="VerticalContentAlignment"   Value="Center" />
   </Style>
   <Style Selector="Button.icon-btn:pointerover /template/ ContentPresenter">
     <Setter Property="Background" Value="{StaticResource Surface2Brush}" />
@@ -539,6 +543,20 @@
     <Setter Property="Foreground" Value="{StaticResource AccentBrush}" />
   </Style>
 
+  <!-- Count badge — larger, high contrast, brighter when the row is active -->
+  <Style Selector="TextBlock.list-count">
+    <Setter Property="FontFamily"        Value="{StaticResource MonoFont}" />
+    <Setter Property="FontSize"          Value="12" />
+    <Setter Property="FontWeight"        Value="Medium" />
+    <Setter Property="Foreground"        Value="{StaticResource TextDimBrush}" />
+    <Setter Property="VerticalAlignment" Value="Center" />
+    <Setter Property="Margin"            Value="8,0,4,0" />
+  </Style>
+  <Style Selector="Border.list-item.active TextBlock.list-count">
+    <Setter Property="Foreground" Value="{StaticResource TextBrush}" />
+    <Setter Property="FontWeight" Value="SemiBold" />
+  </Style>
+
   <!-- ============================================================ -->
   <!-- LIST SECTION HEADER                                          -->
   <!-- ============================================================ -->
@@ -586,12 +604,17 @@
     <Setter Property="BorderBrush"         Value="{StaticResource LineBrush}" />
     <Setter Property="BorderThickness"     Value="1" />
     <Setter Property="CornerRadius"        Value="4" />
-    <Setter Property="Padding"         Value="6,2" />
+    <Setter Property="Padding"             Value="8,3" />
+    <Setter Property="VerticalAlignment"   Value="Center" />
+    <Setter Property="HorizontalAlignment" Value="Center" />
   </Style>
   <Style Selector="Border.kbd > TextBlock">
     <Setter Property="FontFamily"          Value="{StaticResource MonoFont}" />
     <Setter Property="FontSize"            Value="10" />
     <Setter Property="Foreground"          Value="{StaticResource TextFaintBrush}" />
+    <Setter Property="HorizontalAlignment" Value="Center" />
+    <Setter Property="VerticalAlignment"   Value="Center" />
+    <Setter Property="TextAlignment"       Value="Center" />
   </Style>
 
   <!-- ============================================================ -->

src/ClaudeDo.Ui/Views/Islands/ListsIslandView.axaml

@@ -66,7 +66,7 @@
         </StackPanel>
         <!-- More button -->
         <Button Grid.Column="2" Classes="icon-btn" VerticalAlignment="Center"
-                Command="{Binding OpenListSettingsCommand}"
+                Command="{Binding OpenSettingsCommand}"
                 ToolTip.Tip="Settings">
           <PathIcon Data="{StaticResource Icon.MoreHorizontal}"
                     Width="14" Height="14"
@@ -112,11 +112,8 @@
                              VerticalAlignment="Center" Margin="8,0"
                              Foreground="{DynamicResource TextDimBrush}" FontSize="13"/>
                   <!-- Count -->
-                  <TextBlock Grid.Column="2"
-                             Text="{Binding Count}"
-                             FontFamily="{DynamicResource MonoFamily}" FontSize="10"
-                             Foreground="{DynamicResource TextFaintBrush}"
-                             VerticalAlignment="Center"/>
+                  <TextBlock Grid.Column="2" Classes="list-count"
+                             Text="{Binding Count}"/>
                 </Grid>
               </Border>
             </DataTemplate>
@@ -160,20 +157,13 @@
                              VerticalAlignment="Center" Margin="8,0"
                              Foreground="{DynamicResource TextDimBrush}" FontSize="13"/>
                   <!-- Count -->
-                  <TextBlock Grid.Column="2"
-                             Text="{Binding Count}"
-                             FontFamily="{DynamicResource MonoFamily}" FontSize="10"
-                             Foreground="{DynamicResource TextFaintBrush}"
-                             VerticalAlignment="Center"/>
+                  <TextBlock Grid.Column="2" Classes="list-count"
+                             Text="{Binding Count}"/>
                   <!-- Gear button -->
-                  <Button Grid.Column="3"
+                  <Button Grid.Column="3" Classes="icon-btn"
                           Content="⚙"
+                          FontSize="12"
                           ToolTip.Tip="Settings..."
-                          Background="Transparent"
-                          BorderThickness="0"
-                          Padding="4,0"
-                          FontSize="11"
-                          Foreground="{DynamicResource TextFaintBrush}"
                           VerticalAlignment="Center"
                           Command="{Binding $parent[UserControl].((vm:ListsIslandViewModel)DataContext).OpenListSettingsCommand}"
                           CommandParameter="{Binding}"/>

src/ClaudeDo.Ui/Views/Islands/SessionTerminalView.axaml

@@ -50,23 +50,20 @@
       </Grid>
 
       <!-- ── Log output ── -->
-      <ScrollViewer Name="LogScroll" VerticalScrollBarVisibility="Auto"
+      <ScrollViewer Name="LogScroll"
+                    VerticalScrollBarVisibility="Visible"
+                    AllowAutoHide="False"
                     Padding="10,8,10,12">
         <ItemsControl ItemsSource="{Binding Log}">
           <ItemsControl.ItemTemplate>
             <DataTemplate DataType="vm:LogLineViewModel">
-              <Grid ColumnDefinitions="60,46,*" Margin="0,1">
+              <Grid ColumnDefinitions="60,*" Margin="0,1">
                 <!-- Timestamp -->
                 <TextBlock Grid.Column="0"
                            Classes="log-ts"
                            Text="{Binding TimestampFormatted}"/>
-                <!-- Kind marker -->
-                <TextBlock Grid.Column="1"
-                           Classes="log-kind"
-                           Tag="{Binding ClassName}"
-                           Text="{Binding KindMarker}"/>
                 <!-- Message text — selectable so the user can copy raw output -->
-                <SelectableTextBlock Grid.Column="2"
+                <SelectableTextBlock Grid.Column="1"
                                      Text="{Binding Text}" Tag="{Binding ClassName}"
                                      FontFamily="{DynamicResource MonoFont}" FontSize="11"
                                      Foreground="{DynamicResource TextDimBrush}"