refactor(ui): single scrollable DetailsIsland body with agent-settings gear flyout, remove Notes

src/ClaudeDo.Ui/Views/Islands/DetailsIslandView.axaml

@@ -12,7 +12,6 @@
             BorderThickness="0,1,0,0"
             Padding="14,8">
       <Grid ColumnDefinitions="Auto,*,Auto">
-        <!-- Delete button -->
         <Button Grid.Column="0" Classes="icon-btn"
                 Command="{Binding DeleteTaskCommand}"
                 ToolTip.Tip="Delete task"
@@ -20,14 +19,12 @@
           <PathIcon Data="{StaticResource Icon.Trash}" Width="14" Height="14"
                     Foreground="{DynamicResource BloodBrush}"/>
         </Button>
-        <!-- Created date -->
         <TextBlock Grid.Column="1"
                    Text="{Binding Task.CreatedAtFormatted}"
                    FontFamily="{DynamicResource MonoFont}" FontSize="10"
                    Foreground="{DynamicResource TextFaintBrush}"
                    HorizontalAlignment="Center"
                    VerticalAlignment="Center"/>
-        <!-- Close button -->
         <Button Grid.Column="2" Classes="icon-btn"
                 Command="{Binding CloseDetailsCommand}"
                 ToolTip.Tip="Close"
@@ -37,10 +34,10 @@
       </Grid>
     </Border>
 
-    <!-- ── Header ── -->
+    <!-- ── Header (sticky top): eyebrow · title · gear (agent-settings flyout) ── -->
     <Border DockPanel.Dock="Top" Classes="island-header">
-      <!-- Eyebrow row -->
-      <StackPanel Spacing="0">
+      <Grid ColumnDefinitions="*,Auto">
+        <StackPanel Grid.Column="0" Spacing="0">
           <StackPanel Orientation="Horizontal" Spacing="6" Margin="0,0,0,4">
             <Ellipse Width="5" Height="5" Fill="{DynamicResource AccentBrush}"
                      VerticalAlignment="Center"/>
@@ -51,16 +48,62 @@
                        VerticalAlignment="Center"
                        Margin="8,0,0,0"/>
           </StackPanel>
-        <!-- Editable title (reduced size) -->
           <TextBox Text="{Binding EditableTitle, Mode=TwoWay}"
                    FontSize="14" FontWeight="Medium"
                    BorderThickness="0" Background="Transparent"
                    Foreground="{DynamicResource TextBrush}"
                    Padding="0"/>
         </StackPanel>
+
+        <Button Grid.Column="1" Classes="icon-btn"
+                ToolTip.Tip="Agent settings"
+                IsEnabled="{Binding IsAgentSectionEnabled}"
+                VerticalAlignment="Top"
+                Margin="6,0,0,0">
+          <TextBlock Text="⚙" FontSize="14"/>
+          <Button.Flyout>
+            <Flyout Placement="BottomEdgeAlignedRight" ShowMode="Standard">
+              <StackPanel Width="340" Spacing="10" Margin="4">
+                <TextBlock Text="Agent settings (overrides)" FontWeight="SemiBold"/>
+
+                <StackPanel Spacing="2">
+                  <TextBlock Text="Model"/>
+                  <ComboBox ItemsSource="{Binding TaskModelOptions}"
+                            SelectedItem="{Binding TaskModelSelection, Mode=TwoWay}"
+                            HorizontalAlignment="Stretch"/>
+                  <TextBlock Text="{Binding EffectiveModelHint, StringFormat='Effective if inherited: {0}'}"
+                             Opacity="0.6" FontSize="11"/>
+                </StackPanel>
+
+                <StackPanel Spacing="2">
+                  <TextBlock Text="System prompt (appended)"/>
+                  <TextBox Text="{Binding TaskSystemPrompt, Mode=TwoWay}"
+                           AcceptsReturn="True" TextWrapping="Wrap" MinHeight="70"
+                           PlaceholderText="{Binding EffectiveSystemPromptHint}"/>
+                </StackPanel>
+
+                <StackPanel Spacing="2">
+                  <TextBlock Text="Agent file"/>
+                  <ComboBox ItemsSource="{Binding TaskAgentOptions}"
+                            SelectedItem="{Binding TaskSelectedAgent, Mode=TwoWay}"
+                            HorizontalAlignment="Stretch">
+                    <ComboBox.ItemTemplate>
+                      <DataTemplate>
+                        <TextBlock Text="{Binding Name}"/>
+                      </DataTemplate>
+                    </ComboBox.ItemTemplate>
+                  </ComboBox>
+                  <TextBlock Text="{Binding EffectiveAgentHint, StringFormat='Effective if inherited: {0}'}"
+                             Opacity="0.6" FontSize="11"/>
+                </StackPanel>
+              </StackPanel>
+            </Flyout>
+          </Button.Flyout>
+        </Button>
+      </Grid>
     </Border>
 
-    <!-- ── Task strip row: check + title display + star ── -->
+    <!-- ── Task strip row (sticky top): check + title + star ── -->
     <Border DockPanel.Dock="Top"
             Padding="18,10,18,10"
             BorderBrush="{DynamicResource LineBrush}"
@@ -88,9 +131,12 @@
       </Grid>
     </Border>
 
-    <!-- ── Steps section (always visible, above the terminal) ── -->
-    <Border DockPanel.Dock="Top"
-            Padding="18,10,18,10"
+    <!-- ── Scrollable body: steps, agent strip, terminal ── -->
+    <ScrollViewer VerticalScrollBarVisibility="Auto">
+      <StackPanel Spacing="0">
+
+        <!-- Steps section -->
+        <Border Padding="18,12,18,12"
                 BorderBrush="{DynamicResource LineBrush}"
                 BorderThickness="0,0,0,1">
           <StackPanel Spacing="6">
@@ -106,10 +152,8 @@
                 <KeyBinding Gesture="Enter" Command="{Binding AddSubtaskCommand}"/>
               </TextBox.KeyBindings>
             </TextBox>
-        <ScrollViewer MaxHeight="180"
-                      VerticalScrollBarVisibility="Auto"
+            <ItemsControl ItemsSource="{Binding Subtasks}"
                           IsVisible="{Binding Subtasks.Count}">
-          <ItemsControl ItemsSource="{Binding Subtasks}">
               <ItemsControl.ItemTemplate>
                 <DataTemplate DataType="vm:SubtaskRowViewModel">
                   <Border Classes="subtask-row"
@@ -134,79 +178,17 @@
                 </DataTemplate>
               </ItemsControl.ItemTemplate>
             </ItemsControl>
-        </ScrollViewer>
           </StackPanel>
         </Border>
 
-    <!-- ── Main body: agent strip (auto) · terminal (flex) · notes (auto/capped) · agent overrides (auto) ── -->
-    <Grid RowDefinitions="Auto,*,Auto,Auto">
+        <!-- Agent status strip -->
+        <islands:AgentStripView/>
 
-      <!-- Agent strip -->
-      <islands:AgentStripView Grid.Row="0"/>
+        <!-- Session terminal -->
+        <islands:SessionTerminalView MinHeight="360"/>
 
-      <!-- Session terminal — fills remaining vertical space -->
-      <islands:SessionTerminalView Grid.Row="1" MinHeight="220" Margin="0,0,0,0"/>
-
-      <!-- Notes in a capped scroller so it never squeezes the terminal -->
-      <ScrollViewer Grid.Row="2" MaxHeight="180"
-                    VerticalScrollBarVisibility="Auto">
-        <StackPanel Margin="18,12,18,12">
-          <TextBlock Classes="section-label" Text="NOTES" Margin="0,0,0,6"/>
-          <TextBox Text="{Binding Notes, Mode=TwoWay}"
-                   AcceptsReturn="True"
-                   TextWrapping="Wrap"
-                   MinHeight="80"
-                   Padding="12"
-                   PlaceholderText="Notes..."
-                   Background="{DynamicResource Surface2Brush}"
-                   BorderBrush="{DynamicResource LineBrush}"
-                   BorderThickness="1"
-                   CornerRadius="8"
-                   LostFocus="NotesLostFocus"/>
       </StackPanel>
     </ScrollViewer>
 
-      <!-- Agent settings overrides — own row so expanding shrinks the terminal (down to its MinHeight) instead of scrolling inside the capped section -->
-      <Expander Grid.Row="3"
-                Header="Agent settings (overrides)"
-                IsExpanded="False"
-                IsEnabled="{Binding IsAgentSectionEnabled}"
-                Margin="18,0,18,12">
-        <StackPanel Spacing="8" Margin="0,8,0,0">
-
-          <StackPanel Spacing="2">
-            <TextBlock Text="Model" />
-            <ComboBox ItemsSource="{Binding TaskModelOptions}"
-                      SelectedItem="{Binding TaskModelSelection, Mode=TwoWay}"
-                      MinWidth="160" HorizontalAlignment="Left" />
-            <TextBlock Text="{Binding EffectiveModelHint, StringFormat='Effective if inherited: {0}'}"
-                       Opacity="0.6" FontSize="11" />
-          </StackPanel>
-
-          <StackPanel Spacing="2">
-            <TextBlock Text="System prompt (appended)" />
-            <TextBox Text="{Binding TaskSystemPrompt, Mode=TwoWay}"
-                     AcceptsReturn="True" TextWrapping="Wrap" MinHeight="60"
-                     PlaceholderText="{Binding EffectiveSystemPromptHint}" />
-          </StackPanel>
-
-          <StackPanel Spacing="2">
-            <TextBlock Text="Agent file" />
-            <ComboBox ItemsSource="{Binding TaskAgentOptions}"
-                      SelectedItem="{Binding TaskSelectedAgent, Mode=TwoWay}"
-                      MinWidth="240" HorizontalAlignment="Left">
-              <ComboBox.ItemTemplate>
-                <DataTemplate>
-                  <TextBlock Text="{Binding Name}" />
-                </DataTemplate>
-              </ComboBox.ItemTemplate>
-            </ComboBox>
-            <TextBlock Text="{Binding EffectiveAgentHint, StringFormat='Effective if inherited: {0}'}"
-                       Opacity="0.6" FontSize="11" />
-          </StackPanel>
-
-        </StackPanel>
-      </Expander>
-    </Grid>
   </DockPanel>
 </UserControl>