GUI UX, secret visibility, browser-friendly hooks, deploy script

GUI:
- URL column in endpoint grid + Copy URL toolbar button so the full
  http://host:port/hook/<slug> is one click away
- Double-click a row to open the edit dialog
- Bearer/HMAC sections in the editor hide when the auth mode doesn't
  use them, and reappear with previously-entered values when switched
  back
- Log panel auto-scroll checkbox (default on) plus 3s polling so log
  entries stream in without manual refresh
- Secret fields are now plain text with a Copy button. Anyone who can
  open the admin-pipe-ACL'd GUI is already SYSTEM-equivalent on the
  host, so masking the value just made recovery harder. PFX password
  in Server Settings gets the same treatment.

Service:
- Admin pipe ops log info-level lines on every mutation
  (create/update/delete/enable/disable/update-config/bind-https) so
  GUI activity is visible in the Serilog file
- /hook/{slug} accepts GET as well as POST so a browser smoke-test
  works without curl
- /favicon.ico returns 204 so browser hits don't pollute logs with 404s
- AdminPipeServer no longer strips plaintext secrets when sending
  config to the GUI; the pipe ACL already restricts to SYSTEM/Admins

Scripts:
- New deploy.ps1: stops + republishes + copies binaries to
  C:\Program Files\WebhookServer + (re)installs the Windows Service
- install-service.ps1 now uses sc.exe argv splatting consistently for
  both create and config paths

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/WebhookServer.Gui/MainWindow.xaml

@@ -28,6 +28,10 @@
             <Button Content="Delete" Command="{Binding DeleteEndpointCommand}"
                     IsEnabled="{Binding SelectedEndpoint, Converter={StaticResource NotNull}}"/>
             <Separator/>
+            <Button Content="Copy URL" Command="{Binding CopyEndpointUrlCommand}"
+                    IsEnabled="{Binding SelectedEndpoint, Converter={StaticResource NotNull}}"
+                    ToolTip="Copy the full webhook URL for the selected endpoint to the clipboard"/>
+            <Separator/>
             <Button Content="Server Settings…" Command="{Binding EditServerSettingsCommand}"/>
         </ToolBar>
 
@@ -46,6 +50,11 @@
                       CanUserDeleteRows="False"
                       IsReadOnly="True"
                       HeadersVisibility="Column">
+                <DataGrid.RowStyle>
+                    <Style TargetType="DataGridRow">
+                        <EventSetter Event="MouseDoubleClick" Handler="OnRowDoubleClick"/>
+                    </Style>
+                </DataGrid.RowStyle>
                 <DataGrid.Columns>
                     <DataGridTemplateColumn Header="Enabled" Width="80">
                         <DataGridTemplateColumn.CellTemplate>
@@ -56,7 +65,25 @@
                             </DataTemplate>
                         </DataGridTemplateColumn.CellTemplate>
                     </DataGridTemplateColumn>
-                    <DataGridTextColumn Header="Slug" Binding="{Binding Slug}" Width="*"/>
+                    <DataGridTextColumn Header="Slug" Binding="{Binding Slug}" Width="120"/>
+                    <DataGridTemplateColumn Header="URL" Width="*">
+                        <DataGridTemplateColumn.CellTemplate>
+                            <DataTemplate DataType="{x:Type models:EndpointConfig}">
+                                <TextBox IsReadOnly="True"
+                                         BorderThickness="0"
+                                         Background="Transparent"
+                                         Padding="0"
+                                         VerticalAlignment="Center">
+                                    <TextBox.Text>
+                                        <MultiBinding Converter="{StaticResource HookUrl}" Mode="OneWay">
+                                            <Binding Path="Slug"/>
+                                            <Binding Path="DataContext.HttpBaseUrl" RelativeSource="{RelativeSource AncestorType=Window}"/>
+                                        </MultiBinding>
+                                    </TextBox.Text>
+                                </TextBox>
+                            </DataTemplate>
+                        </DataGridTemplateColumn.CellTemplate>
+                    </DataGridTemplateColumn>
                     <DataGridTextColumn Header="Auth" Binding="{Binding AuthMode}" Width="80"/>
                     <DataGridTextColumn Header="Executor" Binding="{Binding ExecutorType}" Width="140"/>
                     <DataGridTextColumn Header="Mode" Binding="{Binding ResponseMode}" Width="80"/>
@@ -71,16 +98,20 @@
                     <Grid.ColumnDefinitions>
                         <ColumnDefinition Width="*"/>
                         <ColumnDefinition Width="Auto"/>
+                        <ColumnDefinition Width="Auto"/>
                     </Grid.ColumnDefinitions>
                     <TextBlock Text="Recent log entries" FontWeight="Bold" Margin="6,4"/>
-                    <Button Grid.Column="1" Content="Refresh" Command="{Binding RefreshLogTailCommand}" Margin="6,2"/>
+                    <CheckBox Grid.Column="1" Content="Auto-scroll" IsChecked="{Binding AutoScrollLogs}" VerticalAlignment="Center" Margin="6,2"/>
+                    <Button Grid.Column="2" Content="Refresh" Command="{Binding RefreshLogTailCommand}" Margin="6,2"/>
                 </Grid>
-                <TextBox Text="{Binding LogTail, Mode=OneWay}"
+                <TextBox x:Name="LogTailBox"
+                         Text="{Binding LogTail, Mode=OneWay}"
                          IsReadOnly="True"
                          FontFamily="Consolas"
                          VerticalScrollBarVisibility="Auto"
                          HorizontalScrollBarVisibility="Auto"
-                         TextWrapping="NoWrap"/>
+                         TextWrapping="NoWrap"
+                         TextChanged="OnLogTailChanged"/>
             </DockPanel>
         </Grid>
     </DockPanel>