feat(ui): WeeklyReportModalView

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/ClaudeDo.Ui/Views/Modals/WeeklyReportModalView.axaml

@@ -0,0 +1,42 @@
+<Window xmlns="https://github.com/avaloniaui"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:vm="using:ClaudeDo.Ui.ViewModels.Modals"
+        xmlns:ctl="using:ClaudeDo.Ui.Views.Controls"
+        x:Class="ClaudeDo.Ui.Views.Modals.WeeklyReportModalView"
+        x:DataType="vm:WeeklyReportModalViewModel"
+        Title="Wochenbericht"
+        Width="820" Height="640"
+        WindowDecorations="None"
+        ExtendClientAreaToDecorationsHint="True"
+        WindowStartupLocation="CenterOwner"
+        Background="{DynamicResource SurfaceBrush}">
+  <Window.KeyBindings>
+    <KeyBinding Gesture="Escape" Command="{Binding CloseCommand}"/>
+  </Window.KeyBindings>
+
+  <ctl:ModalShell Title="WOCHENBERICHT" CloseCommand="{Binding CloseCommand}">
+    <DockPanel Margin="20,16">
+      <StackPanel DockPanel.Dock="Top" Orientation="Horizontal" Spacing="8">
+        <TextBlock Classes="meta" Text="Von" VerticalAlignment="Center"/>
+        <ctl:ThemedDatePicker SelectedDate="{Binding StartDate}"/>
+        <TextBlock Classes="meta" Text="Bis" VerticalAlignment="Center"/>
+        <ctl:ThemedDatePicker SelectedDate="{Binding EndDate}"/>
+        <Button Classes="btn" Content="Erstellen" Command="{Binding GenerateCommand}"
+                IsVisible="{Binding EmptyStateVisible}"/>
+        <Button Classes="btn" Content="Neu erstellen" Command="{Binding GenerateCommand}"
+                IsVisible="{Binding HasReport}"/>
+      </StackPanel>
+
+      <TextBlock DockPanel.Dock="Top" Classes="meta" Margin="0,8,0,0"
+                 Text="{Binding StatusMessage}"/>
+
+      <TextBlock DockPanel.Dock="Top" Classes="meta" Margin="0,16"
+                 Text='Noch kein Bericht f&#xFC;r diesen Zeitraum. Klicke &#x201E;Erstellen&#x201C;.'
+                 IsVisible="{Binding EmptyStateVisible}"/>
+
+      <ScrollViewer IsVisible="{Binding HasReport}">
+        <ctl:MarkdownView Markdown="{Binding ReportMarkdown}"/>
+      </ScrollViewer>
+    </DockPanel>
+  </ctl:ModalShell>
+</Window>

src/ClaudeDo.Ui/Views/Modals/WeeklyReportModalView.axaml.cs

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+using Avalonia.Controls;
+using Avalonia.Markup.Xaml;
+
+namespace ClaudeDo.Ui.Views.Modals;
+
+public partial class WeeklyReportModalView : Window
+{
+    public WeeklyReportModalView() => InitializeComponent();
+}