Mic audio UX: realtime read-only meter + mic picker
- Meter is a READ-ONLY realtime level display: fill = Math.Min(1, AudioLevel * MicVolume) (AudioLevel = live input from the future mixer, 0 with no input; MicVolume is gain on ambient noise). While the slider is dragged the bar previews the slider position (PreviewMouseLeftButtonDown/Up + LostMouseCapture -> SetVolumeAdjusting); on release it returns to the live level (bounces to 0 with no input). Clicking the meter does nothing. - MicVolume drives MicMuted (read-only, muted <=> volume 0): sliding to 0 flips the speaker to the red slashed mute icon, sliding up from 0 clears it; speaker button runs volume to 0 or restores the prior level (_volumeBeforeMute, default 0.8) and flashes the meter to the restored position for ~300ms (BeginVolumeFlash/EndVolumeFlash DispatcherTimer, cancelled if the slider is grabbed). - MIC label opens MicPickerDialog (WinRT audio-capture device enumeration, mirrors camera picker, no new packages); the chosen voice source name shows left-justified INSIDE the meter bar (fill at 75% opacity so text + ruler markings show through). - New files: Services/IMicrophoneEnumerator, MicrophoneDeviceInfo, WinRtMicrophoneEnumerator; ViewModels/MicPickerViewModel; MicPickerDialog. - Docs updated (ai.md, TASKS.md, Services/index.md, ViewModels/index.md); build 0 warnings, 65 tests passing
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<Window x:Class="ytLive.MicPickerDialog"
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xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
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xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
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Title="Select Microphone" Height="340" Width="460"
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Icon="/Assets/llama-logo-icon.png"
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WindowStartupLocation="CenterOwner" ResizeMode="NoResize"
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ShowInTaskbar="False" Background="#1a1a2e">
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<Window.Resources>
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<ResourceDictionary>
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<BooleanToVisibilityConverter x:Key="BoolToVis"/>
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<Style x:Key="CandidateItem" TargetType="ListBoxItem">
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<Setter Property="HorizontalContentAlignment" Value="Stretch"/>
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<Setter Property="Cursor" Value="Hand"/>
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<Setter Property="Template">
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<Setter.Value>
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<ControlTemplate TargetType="ListBoxItem">
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<Border x:Name="Bd" Background="Transparent" CornerRadius="4" Padding="6,5" Margin="0,2">
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<ContentPresenter/>
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</Border>
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<ControlTemplate.Triggers>
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<Trigger Property="IsMouseOver" Value="True">
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<Setter TargetName="Bd" Property="Background" Value="#1c2a52"/>
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</Trigger>
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<Trigger Property="IsSelected" Value="True">
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<Setter TargetName="Bd" Property="Background" Value="#2a2450"/>
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</Trigger>
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</ControlTemplate.Triggers>
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</ControlTemplate>
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</Setter.Value>
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</Setter>
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</Style>
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</ResourceDictionary>
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</Window.Resources>
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<Grid Margin="24">
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<Grid.RowDefinitions>
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<RowDefinition Height="Auto"/>
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<RowDefinition Height="Auto"/>
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<RowDefinition Height="*"/>
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<RowDefinition Height="Auto"/>
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</Grid.RowDefinitions>
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<TextBlock Grid.Row="0" Text="Select Microphone" FontSize="18" FontWeight="Bold"
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Foreground="#e0e0e0" Margin="0,0,0,14"/>
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<TextBlock Grid.Row="1" Text="Pick the microphone to use as your voice source."
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Foreground="#a0a0b0" FontSize="13" TextWrapping="Wrap" Margin="0,0,0,12"/>
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<Grid Grid.Row="2">
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<ListBox Background="Transparent" BorderThickness="0"
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ItemContainerStyle="{StaticResource CandidateItem}"
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ItemsSource="{Binding Microphones}"
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SelectedItem="{Binding SelectedMic, Mode=TwoWay}"
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Visibility="{Binding HasMicrophones, Converter={StaticResource BoolToVis}}">
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<ListBox.ItemTemplate>
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<DataTemplate>
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<StackPanel Orientation="Horizontal">
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<TextBlock Text="🎙️" FontSize="15" VerticalAlignment="Center" Margin="0,0,10,0"/>
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<TextBlock Text="{Binding Name}" Foreground="#e0e0e0" FontSize="13"
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VerticalAlignment="Center" TextTrimming="CharacterEllipsis"/>
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</StackPanel>
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</DataTemplate>
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</ListBox.ItemTemplate>
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</ListBox>
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<StackPanel VerticalAlignment="Center" HorizontalAlignment="Center"
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Visibility="{Binding IsLoading, Converter={StaticResource BoolToVis}}">
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<TextBlock Text="Searching for microphones…" Foreground="#a0a0b0" FontSize="13"/>
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</StackPanel>
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<StackPanel VerticalAlignment="Center"
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Visibility="{Binding NoMicrophones, Converter={StaticResource BoolToVis}}">
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<TextBlock Text="No microphones found" Foreground="#e0e0e0" FontSize="15"
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FontWeight="SemiBold" HorizontalAlignment="Center"/>
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<TextBlock Text="Check that a microphone is connected and that Windows microphone access is enabled."
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Foreground="#a0a0b0" FontSize="13" TextWrapping="Wrap" MaxWidth="360"
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TextAlignment="Center" HorizontalAlignment="Center" Margin="0,8,0,0"/>
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</StackPanel>
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</Grid>
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<StackPanel Grid.Row="3" Orientation="Horizontal" HorizontalAlignment="Right" Margin="0,12,0,0">
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<Button Content="Cancel" Command="{Binding CancelCommand}"
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Style="{StaticResource YtButtonSecondary}" Margin="0,0,8,0"/>
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<Button Content="Use Selected" Command="{Binding UseSelectedCommand}"
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Style="{StaticResource YtButton}" MinWidth="110"/>
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</StackPanel>
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</Grid>
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</Window>
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