Desktop: call device unlock what this platform calls it, not Windows Hello everywhere

src/DodoSSH.Client.App/Views/SettingsPreferencesPage.axaml

@@ -136,7 +136,7 @@
       <Border Classes="settingscard">
         <StackPanel Margin="24,20" Spacing="10">
           <TextBlock Classes="settingsrowcaption"
-                     Text="Unlocking with Windows Hello moved to Security — it registers this machine rather than a preference of this screen's, and Security is where the rest of this machine's trust facts live." />
+                     Text="Unlocking with this machine's device key moved to Security — it registers this machine rather than a preference of this screen's, and Security is where the rest of this machine's trust facts live." />
           <TextBlock Classes="settingsrowcaption"
                      Text="Terminal font, cursor and scrollback — the renderer hard-codes those three. Text size above is the one that is not." />
           <TextBlock Classes="settingsrowcaption"

src/DodoSSH.Client.App/Views/SettingsSecurityPage.axaml

@@ -70,15 +70,15 @@
           <Border Classes="settingsrow last">
             <Grid ColumnDefinitions="*,Auto">
               <StackPanel Grid.Column="0" Spacing="6" Margin="0,0,16,0" MaxWidth="640">
-                <TextBlock Classes="settingsrowtitle" Text="Windows Hello on this machine" />
+                <TextBlock Classes="settingsrowtitle" Text="{Binding DeviceUnlock.Name}" />
                 <TextBlock Classes="settingsrowcaption"
-                           Text="Registers this machine so a later launch can open the keychain with a Windows confirmation instead of your passphrase. Your passphrase keeps working."
+                           Text="{Binding DeviceUnlock.Offer}"
                            IsVisible="{Binding CanRegisterDevice}" />
                 <TextBlock Classes="settingsrowcaption"
-                           Text="Registered · the TPM holds a device key that can open the keychain with a Windows confirmation."
+                           Text="{Binding DeviceUnlock.Registered}"
                            IsVisible="{Binding CanForgetDevice}" />
                 <TextBlock Classes="settingsrowcaption"
-                           Text="This machine has nowhere to keep a device key, so the keychain will keep asking for your passphrase. That needs a TPM and a Windows keystore willing to release the key."
+                           Text="{Binding DeviceUnlock.Unavailable}"
                            IsVisible="{Binding HasNoDeviceKeyOption}" />
               </StackPanel>
               <Button Grid.Column="1" Classes="accent" Height="38" Content="REGISTER"

src/DodoSSH.Client.App/Views/UnlockCard.axaml

@@ -44,15 +44,15 @@
               IsEnabled="{Binding !IsBusy}" />
       <!--
         Shown only when this machine has both a registered wrap and a keystore still willing to release the
-        key. Absent rather than disabled, because a greyed-out "Use Windows Hello" on a machine that never
+        key. Absent rather than disabled, because a greyed-out "Use Touch ID" on a machine that never
         had it invites the reading that something is broken — and the passphrase box beside it is not a
         fallback, it is the ordinary way in.
       -->
-      <Button Classes="ghost" Content="USE WINDOWS HELLO"
+      <Button Classes="ghost" Content="{Binding DeviceUnlock.Button}"
               Command="{Binding UnlockWithDeviceCommand}"
               IsEnabled="{Binding !IsBusy}"
               IsVisible="{Binding CanUnlockWithDevice}"
-              ToolTip.Tip="Opens the keychain with this machine's device key. Windows will ask you to confirm." />
+              ToolTip.Tip="{Binding DeviceUnlock.Tip}" />
     </StackPanel>
 
     <TextBlock Classes="hint" Text="{Binding StatusMessage}" TextWrapping="Wrap" />