Make the run switch a switch, and split the tuning tolerance by mode

Three things you could not see or could not set.

Run and S&P were a label saying which one you were in. They are two buttons
now, the one you are in marked, either one clickable, which is what N1MM has.
Ctrl+? and F1 still work.

The tuning tolerance is one number per mode, as N1MM keeps it: CW, phone and
digital, 300 Hz each, which are its defaults. A phone signal is wide and a CW
one is not, so one number for both was wrong.

The bearing line went blank whenever it could not be worked out, which looks
exactly like a missing feature. It now says which end could not be placed and
what to do — no country file, no position for your own station, or a callsign
the country file does not place. It also gives miles beside the kilometres, as
N1MM does.

While clicking it: a marked button lost its mark under the pointer, because the
theme paints its own background there. The band buttons had the same fault.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

src/Nonemm.App/Windows/EntryWindow.axaml

@@ -17,6 +17,21 @@
       <Setter Property="Padding" Value="6,2" />
       <Setter Property="VerticalContentAlignment" Value="Center" />
     </Style>
+    <Style Selector="Button.mode">
+      <Setter Property="FontSize" Value="12" />
+      <Setter Property="Padding" Value="8,1" />
+      <Setter Property="MinWidth" Value="44" />
+      <Setter Property="HorizontalContentAlignment" Value="Center" />
+    </Style>
+    <Style Selector="Button.mode.here">
+      <Setter Property="Background" Value="#2980B9" />
+      <Setter Property="Foreground" Value="White" />
+    </Style>
+    <!-- the theme paints its own background under the pointer, which would
+         hide the mark on the button that is on -->
+    <Style Selector="Button.mode.here:pointerover /template/ ContentPresenter">
+      <Setter Property="Background" Value="#3498DB" />
+    </Style>
     <Style Selector="Button.band">
       <Setter Property="FontSize" Value="11" />
       <Setter Property="Padding" Value="4,1" />
@@ -28,6 +43,9 @@
       <Setter Property="Background" Value="#2980B9" />
       <Setter Property="Foreground" Value="White" />
     </Style>
+    <Style Selector="Button.band.here:pointerover /template/ ContentPresenter">
+      <Setter Property="Background" Value="#3498DB" />
+    </Style>
     <Style Selector="Button.fkey">
       <Setter Property="FontSize" Value="11" />
       <Setter Property="Padding" Value="6,3" />
@@ -119,10 +137,8 @@
                    VerticalAlignment="Center" />
           <Ellipse Name="TransmitLight" Width="9" Height="9" Fill="#33808080"
                    VerticalAlignment="Center" />
-          <Border Name="RunBorder" Padding="6,1" CornerRadius="3" Background="#22808080"
-                  Margin="4,0,0,0">
-            <TextBlock Name="RunText" FontSize="12" Text="S&amp;P" />
-          </Border>
+          <Button Name="RunButton" Classes="mode" Content="Run" Click="OnRun" Margin="4,0,0,0" />
+          <Button Name="SearchButton" Classes="mode" Content="S&amp;P" Click="OnSearch" />
         </StackPanel>
         <TextBlock Grid.Column="3" Name="ContestText" FontSize="12" Opacity="0.75"
                    VerticalAlignment="Center" Margin="12,0,12,0" Text="no contest"