fix(ui): restore the Settings modal body and tidy the Prime schedule row

The re-templated TabControl dropped PART_ItemsPresenter, so no TabItem
containers were realized and SelectedContent stayed null -> empty body.
Keep the presenter collapsed instead. Also let the last-run label trim
with a tooltip rather than reserving a fixed MinWidth.

src/ClaudeDo.Ui/Views/Modals/SettingsModalView.axaml

@@ -85,13 +85,23 @@
         <Border Grid.Column="1" Background="{DynamicResource LineBrush}" Width="1" Margin="0,8"/>
 
         <!-- TabControl stays the content host (SelectedIndex driven by the sidebar); its own
-             header strip is re-templated away so only PART_SelectedContentHost renders. -->
+             header strip is re-templated away so only PART_SelectedContentHost renders.
+             The PART_ItemsPresenter must stay in the template even though it is collapsed:
+             TabControl.SelectedContent is resolved via ContainerFromIndex, and without a
+             presenter the TabItem containers are never realized -> SelectedContent is null
+             and the modal body renders empty. -->
         <TabControl Grid.Column="2" Padding="20,16" SelectedIndex="{Binding SelectedIndex, Mode=OneWay}">
           <TabControl.Template>
             <ControlTemplate TargetType="TabControl">
-              <ContentPresenter Name="PART_SelectedContentHost"
-                                 Content="{TemplateBinding SelectedContent}"
-                                 ContentTemplate="{TemplateBinding SelectedContentTemplate}"/>
+              <Panel>
+                <ItemsPresenter Name="PART_ItemsPresenter"
+                                ItemsPanel="{TemplateBinding ItemsPanel}"
+                                IsVisible="False"/>
+                <ContentPresenter Name="PART_SelectedContentHost"
+                                  Padding="{TemplateBinding Padding}"
+                                  Content="{TemplateBinding SelectedContent}"
+                                  ContentTemplate="{TemplateBinding SelectedContentTemplate}"/>
+              </Panel>
             </ControlTemplate>
           </TabControl.Template>
 
@@ -268,7 +278,7 @@
                             CornerRadius="6" Padding="10,8" Margin="0,0,0,8"
                             Background="{DynamicResource DeepBrush}">
                       <StackPanel Spacing="6">
-                        <Grid ColumnDefinitions="Auto,*,Auto,Auto,Auto" ColumnSpacing="8">
+                        <Grid ColumnDefinitions="Auto,Auto,Auto,*,Auto" ColumnSpacing="8">
                           <CheckBox Grid.Column="0" IsChecked="{Binding Enabled, Mode=TwoWay}" VerticalAlignment="Center"/>
                           <StackPanel Grid.Column="1" Orientation="Horizontal" Spacing="4" VerticalAlignment="Center">
                             <ToggleButton Classes="day-toggle" Content="{loc:Tr settings.prime.dayMo}" IsChecked="{Binding Monday, Mode=TwoWay}"/>
@@ -284,7 +294,8 @@
                                    PlaceholderText="HH:mm" MaxLength="5"
                                    Width="68" VerticalAlignment="Center"/>
                           <TextBlock Classes="meta" Grid.Column="3" Text="{Binding LastRunLabel}" VerticalAlignment="Center"
-                                     MinWidth="80"/>
+                                     TextTrimming="CharacterEllipsis"
+                                     ToolTip.Tip="{Binding LastRunLabel}"/>
                           <Button Classes="icon-btn" Grid.Column="4" Content="✕"
                                   ToolTip.Tip="{loc:Tr settings.prime.removeScheduleTip}"
                                   Command="{Binding $parent[ItemsControl].((vm:SettingsModalViewModel)DataContext).Prime.RemoveScheduleCommand}"