Merge origin/main into claude/spelunk-api-key-tenant-6373cf

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/DodoSSH.Client.Android/Views/HostsScreen.axaml

@@ -72,7 +72,7 @@
       <Grid ColumnDefinitions="Auto,*">
         <TextBlock Grid.Column="0" Classes="icon" Text="&#xE8B6;" Foreground="{StaticResource TextFaint}"
                    FontSize="20" Margin="12,0,0,0" />
-        <TextBox Grid.Column="1" Text="{Binding HostFilter}" PlaceholderText="Search hosts"
+        <TextBox Grid.Column="1" Text="{Binding HostFilter}" PlaceholderText="Search hosts, or type user@host"
                  Padding="9,0" VerticalContentAlignment="Center"
                  Background="Transparent" BorderThickness="0"
                  Foreground="{StaticResource Text}" FontSize="14" />
@@ -82,6 +82,42 @@
     <!-- ============ sync + conflicts ============ -->
     <StackPanel Grid.Row="1" Margin="16,4,16,0" Spacing="7">
 
+      <!--
+        ◆ A MACHINE THAT IS NOT SAVED. When the search box holds user@host, this card offers to connect to it
+        with a password, and nothing is written to the keychain — the desktop palette's typed-address row, in
+        this screen's shape. The terminal screen's own box does the same but is drawn only while nothing is
+        open; this one is here whatever is running. See VaultViewModel.FilterAddress.
+
+        Above the list rather than over it, like the panels below: the hosts that also match what was typed
+        stay in view, and one of them may be the same machine with a key already bound to it.
+
+        Classes="field secret" on the password for the reason the terminal screen's box gives: the class is
+        what keeps the password out of the software keyboard's dictionary, not only off the screen.
+      -->
+      <Border IsVisible="{Binding HasFilterAddress}" Background="{StaticResource Panel}"
+              BorderBrush="{StaticResource BorderMid}" BorderThickness="1" CornerRadius="12" Padding="13,11">
+        <StackPanel Spacing="9">
+          <Grid ColumnDefinitions="*,Auto">
+            <TextBlock Grid.Column="0" Classes="mono" Text="{Binding FilterAddressText}" FontSize="13"
+                       Foreground="{StaticResource Text}" TextTrimming="CharacterEllipsis"
+                       VerticalAlignment="Center" />
+            <TextBlock Grid.Column="1" Classes="label" Text="NOT SAVED" Margin="10,0,0,0"
+                       VerticalAlignment="Center" />
+          </Grid>
+          <TextBox Classes="field secret" Text="{Binding FilterAddressPassword}" PlaceholderText="password">
+            <TextBox.KeyBindings>
+              <KeyBinding Gesture="Enter" Command="{Binding ConnectToFilterAddressCommand}" />
+            </TextBox.KeyBindings>
+          </TextBox>
+          <Button Classes="primary" Height="44" Content="CONNECT"
+                  Command="{Binding ConnectToFilterAddressCommand}" />
+        </StackPanel>
+      </Border>
+
+      <!-- Why what was typed is not an address yet, or why CONNECT refused — a sentence about the box. -->
+      <TextBlock Classes="detail" TextWrapping="Wrap" Foreground="{StaticResource WarnText}"
+                 Text="{Binding FilterAddressRefusal}" IsVisible="{Binding HasFilterAddressRefusal}" />
+
       <TextBlock Classes="detail" Text="{Binding Status}" TextWrapping="Wrap" />
 
       <!--