[Dock] Add pin instructions (#46052)

## Summary of the Pull Request

<!-- Please review the items on the PR checklist before submitting-->
## PR Checklist

<img width="549" height="341" alt="image"
src="https://github.com/user-attachments/assets/e09e3686-1ffd-4929-8828-061a4aa42fbb"
/>

- [ ] Closes: #xxx
<!-- - [ ] Closes: #yyy (add separate lines for additional resolved
issues) -->
- [ ] **Communication:** I've discussed this with core contributors
already. If the work hasn't been agreed, this work might be rejected
- [ ] **Tests:** Added/updated and all pass
- [ ] **Localization:** All end-user-facing strings can be localized
- [ ] **Dev docs:** Added/updated
- [ ] **New binaries:** Added on the required places
- [ ] [JSON for
signing](https://github.com/microsoft/PowerToys/blob/main/.pipelines/ESRPSigning_core.json)
for new binaries
- [ ] [WXS for
installer](https://github.com/microsoft/PowerToys/blob/main/installer/PowerToysSetup/Product.wxs)
for new binaries and localization folder
- [ ] [YML for CI
pipeline](https://github.com/microsoft/PowerToys/blob/main/.pipelines/ci/templates/build-powertoys-steps.yml)
for new test projects
- [ ] [YML for signed
pipeline](https://github.com/microsoft/PowerToys/blob/main/.pipelines/release.yml)
- [ ] **Documentation updated:** If checked, please file a pull request
on [our docs
repo](https://github.com/MicrosoftDocs/windows-uwp/tree/docs/hub/powertoys)
and link it here: #xxx

<!-- Provide a more detailed description of the PR, other things fixed,
or any additional comments/features here -->
## Detailed Description of the Pull Request / Additional comments

<!-- Describe how you validated the behavior. Add automated tests
wherever possible, but list manual validation steps taken as well -->
## Validation Steps Performed

src/modules/cmdpal/Microsoft.CmdPal.UI/Dock/DockControl.xaml

@@ -138,16 +138,19 @@
                 Placement="Bottom"
                 ShouldConstrainToRootBounds="False">
                 <StackPanel Width="320">
+                    <TextBlock
+                        x:Uid="Dock_Bands_Header"
+                        Margin="8,8,8,12"
+                        Foreground="{ThemeResource TextFillColorSecondaryBrush}" />
                     <TextBlock
                         x:Name="NoAvailableBandsText"
                         x:Uid="Dock_AddBand_NoCommandsAvailable"
-                        Padding="12"
+                        Margin="8,0,0,0"
-                        Foreground="{ThemeResource TextFillColorSecondaryBrush}"
-                        TextAlignment="Center"
                         Visibility="Collapsed" />
                     <ListView
                         x:Name="AddBandListView"
                         MaxHeight="300"
+                        Margin="-12,0,-12,0"
                         HorizontalAlignment="Stretch"
                         IsItemClickEnabled="True"
                         ItemClick="AddBandListView_ItemClick"
@@ -175,6 +178,30 @@
                             </DataTemplate>
                         </ListView.ItemTemplate>
                     </ListView>
+                    <Rectangle
+                        Height="1"
+                        Margin="-16,24,-16,0"
+                        HorizontalAlignment="Stretch"
+                        Fill="{ThemeResource DividerStrokeColorDefaultBrush}" />
+                    <Grid Margin="8,24,0,0" ColumnSpacing="8">
+                        <Grid.ColumnDefinitions>
+                            <ColumnDefinition Width="Auto" />
+                            <ColumnDefinition Width="*" />
+                        </Grid.ColumnDefinitions>
+                        <FontIcon
+                            Margin="0,4,0,0"
+                            VerticalAlignment="Top"
+                            AutomationProperties.AccessibilityView="Raw"
+                            FontSize="11"
+                            Foreground="{ThemeResource TextFillColorSecondaryBrush}"
+                            Glyph="&#xE946;" />
+                        <TextBlock
+                            x:Uid="Dock_Pin_Instruction"
+                            Grid.Column="1"
+                            Foreground="{ThemeResource TextFillColorSecondaryBrush}"
+                            Style="{ThemeResource CaptionTextBlockStyle}"
+                            TextWrapping="Wrap" />
+                    </Grid>
                 </StackPanel>
             </Flyout>
         </ResourceDictionary>

src/modules/cmdpal/Microsoft.CmdPal.UI/Settings/DockSettingsPage.xaml

@@ -213,7 +213,7 @@
                     </controls:SettingsExpander>
 
                     <!--  Bands Section  -->
-                    <TextBlock x:Uid="DockBandsSettingsHeader" Style="{StaticResource SettingsSectionHeaderTextBlockStyle}" />
+                    <!--  <TextBlock x:Uid="DockBandsSettingsHeader" Style="{StaticResource SettingsSectionHeaderTextBlockStyle}" />
 
                     <ItemsRepeater ItemsSource="{x:Bind AllDockBandItems}">
                         <ItemsRepeater.Layout>
@@ -241,7 +241,7 @@
                                 </controls:SettingsCard>
                             </DataTemplate>
                         </ItemsRepeater.ItemTemplate>
-                    </ItemsRepeater>
+                    </ItemsRepeater>-->
                 </StackPanel>
             </Grid>
         </ScrollViewer>

src/modules/cmdpal/Microsoft.CmdPal.UI/Strings/en-us/Resources.resw

@@ -950,7 +950,13 @@ Right-click to remove the key combination, thereby deactivating the shortcut.</v
     <value>Unpin</value>
   </data>
   <data name="Dock_AddBand_NoCommandsAvailable.Text" xml:space="preserve">
-    <value>No commands available to pin</value>
+    <value>All available bands are already pinned.</value>
+  </data>
+	<data name="Dock_Pin_Instruction.Text" xml:space="preserve">
+    <value>To pin commands, extensions or apps, use the Pin to Dock command in Command Palette.</value>
+  </data>
+	<data name="Dock_Bands_Header.Text" xml:space="preserve">
+    <value>Bands</value>
   </data>	
 	<data name="Dock_AddBand_StartTooltip.[using:Microsoft.UI.Xaml.Controls]ToolTipService.ToolTip" xml:space="preserve">
     <value>Add band to start</value>