feat: implement core domain models, authentication service, and UI components for the attendance system

Asistencia/Views/AsistenciaView.axaml

@@ -0,0 +1,135 @@
+<UserControl xmlns="https://github.com/avaloniaui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:vm="using:Asistencia.ViewModels"
+             x:Class="Asistencia.Views.AsistenciaView"
+             x:DataType="vm:AsistenciaViewModel">
+
+    <Design.DataContext>
+        <vm:AsistenciaViewModel />
+    </Design.DataContext>
+
+    <ScrollViewer>
+        <StackPanel Spacing="0" Margin="32,24">
+
+            <Button Content="Volver" Classes="secondary"
+                    HorizontalAlignment="Left"
+                    Command="{Binding VolverCommand}"
+                    Margin="0,0,0,16" />
+
+            <TextBlock Text="{Binding NombreCurso}" Classes="page-header" />
+
+            <Border Classes="card" Margin="0,0,0,20">
+                <StackPanel Spacing="8">
+                    <TextBlock Text="{Binding InfoCurso}"
+                               FontSize="14" Foreground="{DynamicResource TextSecondary}" />
+
+                    <TextBlock Text="{Binding MensajeEstado}"
+                               FontSize="13" FontWeight="SemiBold"
+                               Foreground="{DynamicResource PrimaryNavy}" />
+
+                    <StackPanel Orientation="Horizontal" Spacing="8" Margin="0,8,0,0">
+                        <Button Content="Iniciar Sesion"
+                                Classes="success"
+                                Command="{Binding IniciarSesionCommand}"
+                                IsVisible="{Binding !EnSesion}" />
+                        <Button Content="Finalizar Sesion"
+                                Classes="danger"
+                                Command="{Binding FinalizarSesionCommand}"
+                                IsVisible="{Binding EnSesion}" />
+                    </StackPanel>
+                </StackPanel>
+            </Border>
+
+            <Grid ColumnDefinitions="*,Auto" Margin="0,0,0,16">
+                <TextBlock Grid.Column="0"
+                           Classes="section-title"
+                           Text="Alumnos"
+                           VerticalAlignment="Center" />
+
+                <StackPanel Grid.Column="1" Orientation="Horizontal" Spacing="16">
+                    <StackPanel Orientation="Horizontal" Spacing="4">
+                        <Border Background="{DynamicResource SuccessColor}"
+                                CornerRadius="4" Width="12" Height="12" />
+                        <TextBlock Text="{Binding Presentes}" FontSize="13"
+                                   Foreground="{DynamicResource TextSecondary}" />
+                    </StackPanel>
+                    <StackPanel Orientation="Horizontal" Spacing="4">
+                        <Border Background="{DynamicResource WarningColor}"
+                                CornerRadius="4" Width="12" Height="12" />
+                        <TextBlock Text="{Binding Tardanzas}" FontSize="13"
+                                   Foreground="{DynamicResource TextSecondary}" />
+                    </StackPanel>
+                    <StackPanel Orientation="Horizontal" Spacing="4">
+                        <Border Background="{DynamicResource DangerColor}"
+                                CornerRadius="4" Width="12" Height="12" />
+                        <TextBlock Text="{Binding Ausentes}" FontSize="13"
+                                   Foreground="{DynamicResource TextSecondary}" />
+                    </StackPanel>
+                </StackPanel>
+            </Grid>
+
+            <Border Classes="card" Padding="0">
+                <Grid RowDefinitions="Auto,*">
+
+                    <Border Grid.Row="0" Background="{DynamicResource BackgroundSecondary}"
+                            CornerRadius="12,12,0,0" Padding="16,12">
+                        <Grid ColumnDefinitions="*,120">
+                            <TextBlock Grid.Column="0" Text="Alumno"
+                                       FontSize="13" FontWeight="SemiBold"
+                                       Foreground="{DynamicResource TextSecondary}" />
+                            <TextBlock Grid.Column="1" Text="Estado"
+                                       FontSize="13" FontWeight="SemiBold"
+                                       Foreground="{DynamicResource TextSecondary}"
+                                       HorizontalAlignment="Center" />
+                        </Grid>
+                    </Border>
+
+                    <ListBox Grid.Row="1"
+                             ItemsSource="{Binding Alumnos}"
+                             Background="Transparent"
+                             BorderThickness="0"
+                             Padding="0">
+                        <ListBox.ItemTemplate>
+                            <DataTemplate x:DataType="vm:AlumnoAsistenciaViewModel">
+                                <Border Padding="16,12"
+                                        BorderBrush="{DynamicResource BorderColor}"
+                                        BorderThickness="0,0,0,1">
+                                    <Grid ColumnDefinitions="*,120">
+                                        <TextBlock Grid.Column="0"
+                                                   Text="{Binding NombreCompleto}"
+                                                   FontSize="14"
+                                                   VerticalAlignment="Center" />
+
+                                        <Button Grid.Column="1"
+                                                HorizontalAlignment="Center"
+                                                Command="{Binding $parent[ListBox].((vm:AsistenciaViewModel)DataContext).MarcarAlumnoCommand}"
+                                                CommandParameter="{Binding}"
+                                                Background="{Binding TipoAsistenciaColor}"
+                                                CornerRadius="20"
+                                                Padding="16,6"
+                                                FontSize="13"
+                                                FontWeight="SemiBold"
+                                                Foreground="White"
+                                                BorderThickness="0"
+                                                MinWidth="100">
+                                            <TextBlock Text="{Binding TipoAsistenciaTexto}"
+                                                       Foreground="White" />
+                                        </Button>
+                                    </Grid>
+                                </Border>
+                            </DataTemplate>
+                        </ListBox.ItemTemplate>
+                    </ListBox>
+                </Grid>
+            </Border>
+
+            <Border Classes="card" Margin="0,16,0,0"
+                    IsVisible="{Binding !Alumnos.Count}"
+                    Background="#FFF3CD">
+                <TextBlock Text="No hay alumnos en este curso."
+                           FontSize="14" Foreground="#856404" />
+            </Border>
+
+        </StackPanel>
+    </ScrollViewer>
+</UserControl>