fix(ui): don't leave an orphaned list behind on cancel

"New list" pre-creates the DB row before opening List Settings.
Cancelling or closing that modal left an untitled empty list behind;
CreateListAsync now rolls the row back unless the modal reports Saved.

Also moves the new-list/import-repo buttons up next to the "My Lists"
label instead of a row below the list, and puts Notes above Important
in the smart-list nav order.

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

@@ -118,8 +118,21 @@
           </ItemsControl.ItemTemplate>
         </ItemsControl>
 
-        <!-- MY LISTS section -->
-        <TextBlock Classes="section-label" Text="{loc:Tr lists.myListsLabel}" Margin="10,10,10,4"/>
+        <!-- MY LISTS section — add-list + repo-import sit next to the label -->
+        <Grid ColumnDefinitions="*,Auto,Auto" Margin="10,10,6,4" VerticalAlignment="Center">
+          <TextBlock Grid.Column="0" Classes="section-label"
+                     Text="{loc:Tr lists.myListsLabel}" VerticalAlignment="Center"/>
+          <Button Grid.Column="1" Classes="icon-btn"
+                  Command="{Binding CreateListCommand}"
+                  ToolTip.Tip="{loc:Tr lists.newList}">
+            <PathIcon Data="{StaticResource Icon.Plus}" Width="13" Height="13"/>
+          </Button>
+          <Button Grid.Column="2" Classes="icon-btn"
+                  Command="{Binding OpenRepoImportCommand}"
+                  ToolTip.Tip="{loc:Tr lists.addReposTip}">
+            <PathIcon Data="{StaticResource Icon.Folder}" Width="14" Height="14"/>
+          </Button>
+        </Grid>
         <ItemsControl ItemsSource="{Binding UserLists}">
           <ItemsControl.ItemTemplate>
             <DataTemplate DataType="vm:ListNavItemViewModel">
@@ -201,26 +214,6 @@
           </ItemsControl.ItemTemplate>
         </ItemsControl>
 
-        <!-- New list + import row -->
-        <Grid ColumnDefinitions="*,Auto" Margin="0,4,0,0">
-          <Button Grid.Column="0" Classes="new-list-btn"
-                  Command="{Binding CreateListCommand}">
-            <StackPanel Orientation="Horizontal" Spacing="6">
-              <PathIcon Data="{StaticResource Icon.Plus}"
-                        Width="13" Height="13"
-                        VerticalAlignment="Center"/>
-              <TextBlock Classes="body"
-                         Text="{loc:Tr lists.newList}"
-                         VerticalAlignment="Center"/>
-            </StackPanel>
-          </Button>
-          <Button Grid.Column="1" Classes="icon-btn" Margin="6,0,0,0"
-                  Command="{Binding OpenRepoImportCommand}"
-                  ToolTip.Tip="{loc:Tr lists.addReposTip}">
-            <PathIcon Data="{StaticResource Icon.Folder}" Width="14" Height="14"/>
-          </Button>
-        </Grid>
-
       </StackPanel>
     </ScrollViewer>
   </DockPanel>