LanMountainDesktop/LanMountainDesktop/plugins/PluginSettingsPage.axaml

<UserControl xmlns="https://github.com/avaloniaui"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
             xmlns:ui="using:FluentAvalonia.UI.Controls"
             xmlns:fi="using:FluentIcons.Avalonia.Fluent"
             mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="1000"
             x:Class="LanMountainDesktop.Views.SettingsPages.PluginSettingsPage">

    <StackPanel x:Name="PluginSettingsPanel" Spacing="16">
        <TextBlock x:Name="PluginSettingsPanelTitleTextBlock"
                   FontSize="24"
                   FontWeight="SemiBold"
                   Foreground="{DynamicResource AdaptiveTextPrimaryBrush}"
                   Text="Plugins" />

        <Border Classes="settings-expander-shell">
            <ui:SettingsExpander x:Name="PluginSystemSettingsExpander"
                                 Header="Plugin Runtime"
                                 Description="Manage plugin loading and backend isolation."
                                 IsExpanded="True">
                <ui:SettingsExpander.IconSource>
                    <ui:FontIconSource Glyph="&#xe734;" FontFamily="{StaticResource SymbolThemeFontFamily}" />
                </ui:SettingsExpander.IconSource>
                <ui:SettingsExpander.Footer>
                    <StackPanel Spacing="10">
                        <TextBlock x:Name="PluginSystemDescriptionTextBlock"
                                   Foreground="{DynamicResource AdaptiveTextSecondaryBrush}"
                                   Text="This page will host installed plugin management, permission review, and sandboxed backend runtime controls." />
                        <Border Background="{DynamicResource AdaptiveSurfaceRaisedBrush}"
                                CornerRadius="{DynamicResource DesignCornerRadiusSm}"
                                Padding="14">
                            <TextBlock x:Name="PluginSystemStatusTextBlock"
                                       Foreground="{DynamicResource AdaptiveTextSecondaryBrush}"
                                       TextWrapping="Wrap"
                                       Text="Plugin management UI is not connected yet. Next step is wiring the loader, permissions, and worker isolation state into this panel." />
                        </Border>
                        <StackPanel x:Name="PluginRuntimeSummaryPanel" Spacing="6" />
                    </StackPanel>
                </ui:SettingsExpander.Footer>
            </ui:SettingsExpander>
        </Border>

        <Border Classes="settings-expander-shell">
            <ui:SettingsExpander x:Name="InstalledPluginsSettingsExpander"
                                 Header="Installed Plugins"
                                 Description="Manage installed plugins here."
                                 IsExpanded="True">
                <ui:SettingsExpander.IconSource>
                    <ui:FontIconSource Glyph="&#xe8fd;" FontFamily="{StaticResource SymbolThemeFontFamily}" />
                </ui:SettingsExpander.IconSource>
                <ui:SettingsExpander.Footer>
                    <StackPanel Spacing="10">
                        <TextBlock x:Name="PluginRestartHintTextBlock"
                                   Foreground="{DynamicResource AdaptiveTextSecondaryBrush}"
                                   TextWrapping="Wrap"
                                   Text="Plugin enable state changes take effect after restarting the app." />
                        <TextBlock x:Name="PluginCatalogEmptyTextBlock"
                                   Foreground="{DynamicResource AdaptiveTextSecondaryBrush}"
                                   Text="No plugins found."
                                   IsVisible="False" />
                    </StackPanel>
                </ui:SettingsExpander.Footer>
            </ui:SettingsExpander>
        </Border>

        <Border Classes="settings-expander-shell">
            <ui:SettingsExpander x:Name="ImportPluginPackageSettingsExpander"
                                 Header="Install From Package"
                                 Description="Open a .laapp package and stage it into the local plugin directory."
                                 IsExpanded="False">
                <ui:SettingsExpander.IconSource>
                    <ui:FontIconSource Glyph="&#xe8b7;" FontFamily="{StaticResource SymbolThemeFontFamily}" />
                </ui:SettingsExpander.IconSource>
                <ui:SettingsExpander.Footer>
                    <StackPanel Spacing="10">
                        <Button x:Name="InstallPluginPackageButton"
                                HorizontalAlignment="Left"
                                Click="OnInstallPluginPackageClick"
                                Content="Open .laapp package" />
                        <TextBlock x:Name="PluginPackageImportHintTextBlock"
                                   Foreground="{DynamicResource AdaptiveTextSecondaryBrush}"
                                   TextWrapping="Wrap"
                                   Text="Open a .laapp package to install it into the local plugin directory." />
                        <TextBlock x:Name="PluginPackageImportStatusTextBlock"
                                   Foreground="{DynamicResource AdaptiveTextSecondaryBrush}"
                                   TextWrapping="Wrap"
                                   IsVisible="False" />
                    </StackPanel>
                </ui:SettingsExpander.Footer>
            </ui:SettingsExpander>
        </Border>

    </StackPanel>
</UserControl>