Modern UI: fix Find bar, font tuning, banner dismissal, keyboard navigation

- Rewrite FindBar: search on Enter/F3 only (no live search), fix highlight via
  focus-select-scroll sequence, close on Escape from output TextBox
- Enable keyboard scrolling in output with IsReadOnlyCaretVisible
- Mouse wheel scroll focuses output TextBox to keep highlight in sync
- Keyboard scroll keys close find bar; Ctrl+F works from input TextBox
- Add Find tooltip hint (Ctrl+F) on Simple view
- Reduce page title font 16→15, bump annotations 11→11.5, details 11.5→12
- Clear detection banners after Download Symbols and Use Symbol Server in Simple UI
- Clear all banners/glow on successful resolution

Author: arvindshmicrosoft

Modern/Controls/FindBar.xaml.cs

@@ -25,13 +25,23 @@ public void Open() {
             }));
         }
 
-        /// <summary>Hide the find bar and return focus to the target.</summary>
+        /// <summary>Hide the find bar and clear state.</summary>
         public void Close() {
             Visibility = Visibility.Collapsed;
             _matchPositions.Clear();
             _currentMatchIndex = -1;
             MatchInfo.Text = "";
-            _targetTextBox?.Focus();
+            SearchBox.Text = "";
+        }
+
+        private void Close_Click(object sender, RoutedEventArgs e) {
+            Close();
+            Dispatcher.BeginInvoke(System.Windows.Threading.DispatcherPriority.Input, new Action(() => {
+                if (_targetTextBox != null) {
+                    _targetTextBox.Focus();
+                    Keyboard.Focus(_targetTextBox);
+                }
+            }));
         }
 
         public bool IsOpen => Visibility == Visibility.Visible;
@@ -53,8 +63,7 @@ private void FindMatches() {
             }
 
             if (_matchPositions.Count > 0) {
-                _currentMatchIndex = 0;
-                HighlightCurrent();
+                MatchInfo.Text = $"{_matchPositions.Count} matches";
             } else {
                 MatchInfo.Text = "No matches";
             }
@@ -63,46 +72,57 @@ private void FindMatches() {
         private void HighlightCurrent() {
             if (_targetTextBox == null || _currentMatchIndex < 0 || _currentMatchIndex >= _matchPositions.Count) return;
             var pos = _matchPositions[_currentMatchIndex];
+            var len = SearchBox.Text.Length;
+
+            // Focus the target briefly to make Select() work, then scroll and return focus
             _targetTextBox.Focus();
-            _targetTextBox.Select(pos, SearchBox.Text.Length);
-            // Scroll to selection by getting the character rect
-            var rect = _targetTextBox.GetRectFromCharacterIndex(pos);
-            _targetTextBox.ScrollToLine(_targetTextBox.GetLineIndexFromCharacterIndex(pos));
-            MatchInfo.Text = $"{_currentMatchIndex + 1} of {_matchPositions.Count}";
-            // Return focus to search box so user can keep typing
+            _targetTextBox.Select(pos, len);
+            var lineIndex = _targetTextBox.GetLineIndexFromCharacterIndex(pos);
+            _targetTextBox.ScrollToLine(lineIndex);
             SearchBox.Focus();
+            MatchInfo.Text = $"{_currentMatchIndex + 1} of {_matchPositions.Count}";
         }
 
         private void Next_Click(object sender, RoutedEventArgs e) => FindNext();
         private void Prev_Click(object sender, RoutedEventArgs e) => FindPrevious();
 
         public void FindNext() {
+            if (_matchPositions.Count == 0) FindMatches();
             if (_matchPositions.Count == 0) return;
             _currentMatchIndex = (_currentMatchIndex + 1) % _matchPositions.Count;
             HighlightCurrent();
         }
 
         public void FindPrevious() {
+            if (_matchPositions.Count == 0) FindMatches();
             if (_matchPositions.Count == 0) return;
             _currentMatchIndex = (_currentMatchIndex - 1 + _matchPositions.Count) % _matchPositions.Count;
             HighlightCurrent();
         }
 
-        private void Close_Click(object sender, RoutedEventArgs e) => Close();
-
         private void SearchBox_TextChanged(object sender, TextChangedEventArgs e) {
-            FindMatches();
+            // Clear stale matches when search text changes; new matches built on Enter/nav
+            _matchPositions.Clear();
+            _currentMatchIndex = -1;
+            MatchInfo.Text = "";
         }
 
         private void SearchBox_KeyDown(object sender, KeyEventArgs e) {
             if (e.Key == Key.Enter || e.Key == Key.F3) {
+                if (_matchPositions.Count == 0) FindMatches();
                 if (Keyboard.Modifiers == ModifierKeys.Shift)
                     FindPrevious();
                 else
                     FindNext();
                 e.Handled = true;
             } else if (e.Key == Key.Escape) {
                 Close();
+                Dispatcher.BeginInvoke(System.Windows.Threading.DispatcherPriority.Input, new Action(() => {
+                    if (_targetTextBox != null) {
+                        _targetTextBox.Focus();
+                        Keyboard.Focus(_targetTextBox);
+                    }
+                }));
                 e.Handled = true;
             }
         }

Modern/Pages/BaseAddressPage.xaml

@@ -9,7 +9,7 @@
             <RowDefinition Height="Auto"/>
         </Grid.RowDefinitions>
 
-        <TextBlock Grid.Row="0" FontSize="16" FontWeight="SemiBold" Margin="0,0,0,4"
+        <TextBlock Grid.Row="0" FontSize="15" FontWeight="SemiBold" Margin="0,0,0,4"
                    Text="Provide Module Base Addresses"/>
 
         <Border Grid.Row="1" Background="{DynamicResource WarningBackgroundBrush}" BorderBrush="{DynamicResource WarningBorderBrush}" BorderThickness="1" CornerRadius="4" Padding="10" Margin="0,0,0,8">

Modern/Pages/FieldSelectionPage.xaml

@@ -12,7 +12,7 @@
         </Grid.RowDefinitions>
 
         <StackPanel Grid.Row="0" Margin="0,0,0,8">
-            <TextBlock FontSize="16" FontWeight="SemiBold" Margin="0,0,0,4"
+            <TextBlock FontSize="15" FontWeight="SemiBold" Margin="0,0,0,4"
                        Text="Import from XEL Files"/>
             <TextBlock FontSize="12" Foreground="Gray"
                        Text="Select XEL file(s), choose the fields to extract, then click Next to import callstacks."/>

Modern/Pages/InputPage.xaml

@@ -10,7 +10,7 @@
         </Grid.RowDefinitions>
 
         <StackPanel Grid.Row="0" Margin="0,0,0,8">
-            <TextBlock FontSize="16" FontWeight="SemiBold" Margin="0,0,0,4"
+            <TextBlock FontSize="15" FontWeight="SemiBold" Margin="0,0,0,4"
                        Text="Provide Callstack Input"/>
             <TextBlock FontSize="12" Foreground="Gray"
                        Text="Paste or type raw callstack text below, or drag and drop text files."/>

Modern/Pages/InputSourcePage.xaml

@@ -10,7 +10,7 @@
         </Grid.RowDefinitions>
 
         <StackPanel Grid.Row="0" Margin="0,0,0,8">
-            <TextBlock FontSize="16" FontWeight="SemiBold" Margin="0,0,0,4"
+            <TextBlock FontSize="15" FontWeight="SemiBold" Margin="0,0,0,4"
                        Text="How would you like to provide input?"/>
             <TextBlock FontSize="12" Foreground="Gray"
                        Text="Choose an input method to get started."/>

Modern/Pages/OptionsPage.xaml

@@ -10,7 +10,7 @@
         </Grid.RowDefinitions>
 
         <StackPanel Grid.Row="0" Margin="0,0,0,8">
-            <TextBlock FontSize="16" FontWeight="SemiBold" Margin="0,0,0,4"
+            <TextBlock FontSize="15" FontWeight="SemiBold" Margin="0,0,0,4"
                        Text="Output Options"/>
             <TextBlock FontSize="12" Foreground="Gray"
                        Text="Configure how the resolved callstacks should be formatted."/>

Modern/Pages/ResolvePage.xaml

@@ -22,7 +22,7 @@
         </Grid.RowDefinitions>
 
         <StackPanel Grid.Row="0" Margin="0,0,0,8">
-            <TextBlock FontSize="16" FontWeight="SemiBold" Margin="0,0,0,4"
+            <TextBlock FontSize="15" FontWeight="SemiBold" Margin="0,0,0,4"
                        Text="Resolved Output"/>
             <TextBlock FontSize="12" Foreground="Gray"
                        Text="Symbolized callstack output is shown below."/>
@@ -37,7 +37,8 @@
                 </StackPanel>
             </Button>
             <Button Padding="10,6" Margin="8,0,0,0" Click="Find_Click"
-                    Visibility="{Binding HasOutput, Converter={StaticResource BoolToVis}}">
+                    Visibility="{Binding HasOutput, Converter={StaticResource BoolToVis}}"
+                    ToolTip="Find text in output (Ctrl+F)">
                 <StackPanel Orientation="Horizontal">
                     <TextBlock Text="&#xE721;" FontFamily="Segoe MDL2 Assets" FontSize="13" VerticalAlignment="Center" Margin="0,0,6,0"/>
                     <TextBlock Text="Find"/>
@@ -47,7 +48,8 @@
 
         <local:FindBar x:Name="findBar" Grid.Row="2"/>
 
-        <TextBox x:Name="outputTextBox" Grid.Row="4" IsReadOnly="True" AcceptsReturn="True"
+        <TextBox x:Name="outputTextBox" Grid.Row="4" IsReadOnly="True" IsReadOnlyCaretVisible="True"
+                 AcceptsReturn="True"
                  IsInactiveSelectionHighlightEnabled="True"
                  VerticalScrollBarVisibility="Auto" HorizontalScrollBarVisibility="Auto"
                  FontFamily="Consolas" FontSize="13" TextWrapping="NoWrap"

Modern/Pages/ResolvePage.xaml.cs

@@ -5,6 +5,18 @@ public partial class ResolvePage : UserControl {
         public ResolvePage() {
             InitializeComponent();
             findBar.Attach(outputTextBox);
+            // On mouse wheel, focus the output TextBox so the highlight stays with the text
+            outputTextBox.PreviewMouseWheel += (s, e) => {
+                if (findBar.IsOpen) {
+                    outputTextBox.Focus();
+                    Keyboard.Focus(outputTextBox);
+                }
+            };
+            // On keyboard scroll keys or Escape, close find bar
+            outputTextBox.PreviewKeyDown += (s, e) => {
+                if (findBar.IsOpen && (e.Key == Key.Escape || e.Key == Key.Up || e.Key == Key.Down || e.Key == Key.PageUp || e.Key == Key.PageDown || e.Key == Key.Home || e.Key == Key.End))
+                    findBar.Close();
+            };
         }
 
         private void CopyAll_Click(object sender, RoutedEventArgs e) {

Modern/Pages/SymbolConfigPage.xaml

@@ -17,7 +17,7 @@
         </Grid.RowDefinitions>
 
         <StackPanel Grid.Row="0" Margin="0,0,0,8">
-            <TextBlock FontSize="16" FontWeight="SemiBold" Margin="0,0,0,4"
+            <TextBlock FontSize="15" FontWeight="SemiBold" Margin="0,0,0,4"
                        Text="Configure Symbol Paths"/>
             <TextBlock FontSize="12" Foreground="Gray"
                        Text="Use preset symbol downloads for a known SQL Server build, or set custom PDB search paths."/>
@@ -43,7 +43,7 @@
                         <TextBlock Text="Detected SQL Server " FontWeight="SemiBold" FontSize="13"/>
                         <TextBlock Text="{Binding DetectedBuildVersion}" FontWeight="SemiBold" FontSize="13"/>
                     </StackPanel>
-                    <TextBlock Text="{Binding DetectedBuildDetails}" FontSize="11.5" Foreground="Gray" TextTrimming="CharacterEllipsis"/>
+                    <TextBlock Text="{Binding DetectedBuildDetails}" FontSize="12" Foreground="Gray" TextTrimming="CharacterEllipsis"/>
                 </StackPanel>
                 <Button Grid.Column="2" Padding="12,6" Click="DownloadDetectedBuild_Click"
                         Style="{DynamicResource AccentButtonStyle}">
@@ -72,7 +72,7 @@
                            Foreground="{DynamicResource SystemControlForegroundAccentBrush}"/>
                 <StackPanel Grid.Column="1" VerticalAlignment="Center">
                     <TextBlock Text="XML frames with PDB info detected" FontWeight="SemiBold" FontSize="13"/>
-                    <TextBlock FontSize="11.5" Foreground="Gray" TextTrimming="CharacterEllipsis">
+                    <TextBlock FontSize="12" Foreground="Gray" TextTrimming="CharacterEllipsis">
                         <Run Text="Modules:"/>
                         <Run Text="{Binding DetectedPdbModules, Mode=OneWay}"/>
                     </TextBlock>
@@ -107,7 +107,7 @@
         <!-- PDB Paths (manual) -->
         <GroupBox Grid.Row="3" Header="PDB Symbol Paths" Padding="6" Margin="0,0,0,8">
             <StackPanel>
-                <TextBlock FontSize="11" Foreground="Gray" Margin="0,0,0,4"
+                <TextBlock FontSize="11.5" Foreground="Gray" Margin="0,0,0,4"
                            Text="Local folder(s), UNC path(s), or WinDbg-style symbol server(s). If using multiple paths; separate using semicolons."/>
                 <DockPanel>
                 <ToggleButton DockPanel.Dock="Right" IsChecked="{Binding PinPdbPaths}"

Modern/Pages/SymbolConfigPage.xaml.cs

@@ -9,13 +9,15 @@ public SymbolConfigPage() {
         }
 
         private void UseSymbolServer_Click(object sender, RoutedEventArgs e) {
+            ViewModel.HasXmlFrameInput = false;
             ViewModel.UpdatePdbPath(@"SRV*c:\temp\symcache*https://msdl.microsoft.com/download/symbols");
             ViewModel.StatusMessage = "Symbol server path added. Ready to resolve!";
             ViewModel.HighlightResolve = true;
         }
 
         private async void DownloadDetectedBuild_Click(object sender, RoutedEventArgs e) {
             await ViewModel.DownloadSymbolsForDetectedBuildAsync();
+            ViewModel.DetectedBuildInfo = null;
         }
 
         private void BrowsePdbPath_Click(object sender, RoutedEventArgs e) {