feat(18-02): DataGrid visual differentiation + localization for elevated rows

- Add WasAutoElevated DataTrigger to DataGrid.RowStyle: amber background + tooltip
- Add warning icon (U+26A0) indicator column (width 24) before Object Type column
- Icon shown via DataTrigger on WasAutoElevated, hidden by default
- Add permissions.elevated.tooltip EN key to Strings.resx
- Add permissions.elevated.tooltip FR key to Strings.fr.resx

SharepointToolbox/Localization/Strings.fr.resx

@@ -416,4 +416,5 @@
   <data name="settings.ownership.title" xml:space="preserve"><value>Propri&#233;t&#233; du site</value></data>
   <data name="settings.ownership.auto" xml:space="preserve"><value>Prendre automatiquement la propri&#233;t&#233; d'administrateur de collection de sites en cas de refus d'acc&#232;s</value></data>
   <data name="settings.ownership.description" xml:space="preserve"><value>Lorsqu'activ&#233;, l'application prendra automatiquement les droits d'administrateur de collection de sites lorsqu'un scan rencontre une erreur de refus d'acc&#232;s. N&#233;cessite les permissions d'administrateur de tenant.</value></data>
+  <data name="permissions.elevated.tooltip" xml:space="preserve"><value>Ce site a &#233;t&#233; &#233;lev&#233; automatiquement — la propri&#233;t&#233; a &#233;t&#233; prise pour compl&#233;ter le scan</value></data>
 </root>

SharepointToolbox/Localization/Strings.resx

@@ -416,4 +416,5 @@
   <data name="settings.ownership.title" xml:space="preserve"><value>Site Ownership</value></data>
   <data name="settings.ownership.auto" xml:space="preserve"><value>Automatically take site collection admin ownership on access denied</value></data>
   <data name="settings.ownership.description" xml:space="preserve"><value>When enabled, the app will automatically elevate to site collection admin when a scan encounters an access denied error. Requires Tenant Admin permissions.</value></data>
+  <data name="permissions.elevated.tooltip" xml:space="preserve"><value>This site was automatically elevated — ownership was taken to complete the scan</value></data>
 </root>

SharepointToolbox/Views/Tabs/PermissionsView.xaml

@@ -216,7 +216,7 @@
           </Style>
         </DataGrid.Style>
 
-        <!-- Row style: color-code by RiskLevel when in simplified mode -->
+        <!-- Row style: color-code by RiskLevel when in simplified mode; amber for auto-elevated rows -->
         <DataGrid.RowStyle>
           <Style TargetType="DataGridRow">
             <Style.Triggers>
@@ -232,11 +232,35 @@
               <DataTrigger Binding="{Binding RiskLevel}" Value="{x:Static models:RiskLevel.ReadOnly}">
                 <Setter Property="Background" Value="#EFF6FF" />
               </DataTrigger>
+              <!-- Phase 18: auto-elevated rows get amber background + tooltip -->
+              <DataTrigger Binding="{Binding WasAutoElevated}" Value="True">
+                <Setter Property="Background" Value="#FFF9E6" />
+                <Setter Property="ToolTip" Value="{Binding Source={x:Static loc:TranslationSource.Instance}, Path=[permissions.elevated.tooltip]}" />
+              </DataTrigger>
             </Style.Triggers>
           </Style>
         </DataGrid.RowStyle>
 
         <DataGrid.Columns>
+          <!-- Phase 18: auto-elevated row indicator (warning icon) -->
+          <DataGridTemplateColumn Header="" Width="24" IsReadOnly="True">
+            <DataGridTemplateColumn.CellTemplate>
+              <DataTemplate>
+                <TextBlock Text="&#x26A0;" FontSize="12" HorizontalAlignment="Center">
+                  <TextBlock.Style>
+                    <Style TargetType="TextBlock">
+                      <Setter Property="Visibility" Value="Collapsed" />
+                      <Style.Triggers>
+                        <DataTrigger Binding="{Binding WasAutoElevated}" Value="True">
+                          <Setter Property="Visibility" Value="Visible" />
+                        </DataTrigger>
+                      </Style.Triggers>
+                    </Style>
+                  </TextBlock.Style>
+                </TextBlock>
+              </DataTemplate>
+            </DataGridTemplateColumn.CellTemplate>
+          </DataGridTemplateColumn>
           <DataGridTextColumn Header="Object Type" Binding="{Binding ObjectType}" Width="100" />
           <DataGridTextColumn Header="Title" Binding="{Binding Title}" Width="140" />
           <DataGridTextColumn Header="URL" Binding="{Binding Url}" Width="200" />