feat(ui): mobile polish — tab bar icons, server overlay, status text

Tab bar: replace plain Header strings with icon+label StackPanels
(≡ ↑ ↓ ⊙ ⊕); style TabStrip with UniformGrid so all five tabs share
the full width equally; center content and add touch padding. Icons
are visible only on mobile (IsMobile binding); desktop keeps text only.

Server settings overlay: dual layout for host/port/TLS input (vertical
on mobile: host full-width, port+TLS side by side) and for action
buttons (stacked full-width on mobile). Known-server list item shows
host on one line and tcp/ssl ports on the line below on mobile.

Connection status bar: simplify to "connesso" / "non connesso" —
remove the "a host:port" suffix from the connected state and
consolidate all disconnected/error/cert-changed states to conn.none.

src/App/Localization/Loc.cs

@@ -52,7 +52,7 @@ public sealed class Loc
         ["menu.net.resetcerts"]   = ["Reset certificati SSL",                                             "Reset SSL certificates",       "Restablecer certificados SSL",         "Réinitialiser les certificats SSL",        "Redefinir certificados SSL",               "SSL-Zertifikate zurücksetzen"],
         ["menu.settings"]         = ["_Impostazioni",                                                     "_Settings",                    "_Configuración",                       "_Paramètres",                              "_Configurações",                           "_Einstellungen"],
         ["menu.help"]             = ["_Help",                                                             "_Help",                        "_Ayuda",                               "_Aide",                                    "_Ajuda",                                   "_Hilfe"],
-        ["help.title"]            = ["Informazioni sul software",                                         "About this software",          "Información del software",             "À propos du logiciel",                     "Sobre o software",                         "Über die Software"],
+        ["help.title"]            = ["Informazioni",                                                     "About",                        "Información",                          "À propos",                                 "Sobre",                                    "Über"],
         ["help.info"]             = [
             "Wallet SPV per la criptovaluta Palladium (PLM).",
             "SPV wallet for the Palladium (PLM) cryptocurrency.",
@@ -191,7 +191,7 @@ public sealed class Loc
         ["conn.reconnecting"]     = ["riconnessione…",                                                    "reconnecting…",                "reconectando…",                        "reconnexion…",                             "reconectando…",                            "Verbindung wird wiederhergestellt…"],
         ["conn.error"]            = ["errore di connessione",                                             "connection error",             "error de conexión",                    "erreur de connexion",                      "erro de conexão",                          "Verbindungsfehler"],
         ["conn.certchanged"]      = ["certificato cambiato",                                              "certificate changed",          "certificado cambiado",                 "certificat modifié",                       "certificado alterado",                     "Zertifikat geändert"],
-        ["conn.connectedto"]      = ["connesso a",                                                        "connected to",                 "conectado a",                          "connecté à",                               "conectado a",                              "verbunden mit"],
+        ["conn.connectedto"]      = ["connesso",                                                          "connected",                    "conectado",                            "connecté",                                 "conectado",                                "verbunden"],
         ["conn.connectingto"]     = ["connessione a",                                                     "connecting to",                "conectando a",                         "connexion à",                              "conectando a",                             "Verbindung zu"],
 
         // Messaggi di stato principali

src/App/ViewModels/MainWindowViewModel.Sync.cs

@@ -144,11 +144,11 @@ public partial class MainWindowViewModel
                 _client.Disconnected += _ => Dispatcher.UIThread.Post(() =>
                 {
                     IsConnected = false;
-                    ConnectionStatus = Loc.Tr("conn.disconnected");
+                    ConnectionStatus = Loc.Tr("conn.none");
                 });
                 IsConnected = true;
                 _autoReconnect = true;
-                ConnectionStatus = $"{Loc.Tr("conn.connectedto")} {host}:{port}{(UseSsl ? " (TLS)" : "")}";
+                ConnectionStatus = Loc.Tr("conn.connectedto");
             }
 
             if (_account is null || _doc is null)
@@ -186,13 +186,13 @@ public partial class MainWindowViewModel
         catch (CertificatePinMismatchException ex)
         {
             IsConnected = false;
-            ConnectionStatus = Loc.Tr("conn.certchanged");
+            ConnectionStatus = Loc.Tr("conn.none");
             StatusMessage = ex.Message;
         }
         catch (Exception ex)
         {
             IsConnected = _client?.IsConnected == true;
-            ConnectionStatus = IsConnected ? ConnectionStatus : Loc.Tr("conn.error");
+            ConnectionStatus = IsConnected ? ConnectionStatus : Loc.Tr("conn.none");
             StatusMessage = $"Errore: {ex.Message}";
         }
         finally

src/App/Views/MainView.axaml

@@ -199,8 +199,33 @@
             <TabControl Grid.Row="1"
                         TabStripPlacement="{Binding IsMobile, Converter={x:Static vm:BoolToTabPlacementConverter.Instance}}">
 
+                <TabControl.Styles>
+                    <!-- Tab equamente distribuiti su tutta la larghezza -->
+                    <Style Selector="TabStrip">
+                        <Setter Property="ItemsPanel">
+                            <ItemsPanelTemplate>
+                                <UniformGrid Rows="1"/>
+                            </ItemsPanelTemplate>
+                        </Setter>
+                    </Style>
+                    <Style Selector="TabItem">
+                        <Setter Property="HorizontalAlignment" Value="Stretch"/>
+                        <Setter Property="HorizontalContentAlignment" Value="Center"/>
+                        <Setter Property="VerticalContentAlignment" Value="Center"/>
+                        <Setter Property="Padding" Value="6,8"/>
+                    </Style>
+                </TabControl.Styles>
+
                 <!-- 1. Storico -->
-                <TabItem Header="{Binding Loc[tab.history]}">
+                <TabItem>
+                    <TabItem.Header>
+                        <StackPanel Spacing="2" HorizontalAlignment="Center">
+                            <TextBlock Text="≡" FontSize="19" HorizontalAlignment="Center"
+                                       IsVisible="{Binding IsMobile}"/>
+                            <TextBlock Text="{Binding Loc[tab.history]}" FontSize="12"
+                                       HorizontalAlignment="Center"/>
+                        </StackPanel>
+                    </TabItem.Header>
                     <Grid RowDefinitions="Auto,*" Margin="4">
                         <TextBlock Grid.Row="0" Text="{Binding Loc[history.hint]}"
                                    IsVisible="{Binding IsDesktop}"
@@ -241,7 +266,15 @@
                 </TabItem>
 
                 <!-- 2. Invia -->
-                <TabItem Header="{Binding Loc[tab.send]}">
+                <TabItem>
+                    <TabItem.Header>
+                        <StackPanel Spacing="2" HorizontalAlignment="Center">
+                            <TextBlock Text="↑" FontSize="19" HorizontalAlignment="Center"
+                                       IsVisible="{Binding IsMobile}"/>
+                            <TextBlock Text="{Binding Loc[tab.send]}" FontSize="12"
+                                       HorizontalAlignment="Center"/>
+                        </StackPanel>
+                    </TabItem.Header>
                     <StackPanel Spacing="10" Margin="8" MaxWidth="640" HorizontalAlignment="Left">
                         <!-- Contatto rapido -->
                         <StackPanel Orientation="Horizontal" Spacing="8">
@@ -298,7 +331,15 @@
                 </TabItem>
 
                 <!-- 3. Ricevi -->
-                <TabItem Header="{Binding Loc[tab.receive]}">
+                <TabItem>
+                    <TabItem.Header>
+                        <StackPanel Spacing="2" HorizontalAlignment="Center">
+                            <TextBlock Text="↓" FontSize="19" HorizontalAlignment="Center"
+                                       IsVisible="{Binding IsMobile}"/>
+                            <TextBlock Text="{Binding Loc[tab.receive]}" FontSize="12"
+                                       HorizontalAlignment="Center"/>
+                        </StackPanel>
+                    </TabItem.Header>
                     <StackPanel Spacing="10" Margin="8">
                         <TextBlock Text="{Binding Loc[receive.next]}"/>
                         <!-- Desktop: indirizzo + copia su una riga -->
@@ -332,7 +373,15 @@
                 </TabItem>
 
                 <!-- 4. Indirizzi -->
-                <TabItem Header="{Binding Loc[tab.addresses]}">
+                <TabItem>
+                    <TabItem.Header>
+                        <StackPanel Spacing="2" HorizontalAlignment="Center">
+                            <TextBlock Text="⊙" FontSize="19" HorizontalAlignment="Center"
+                                       IsVisible="{Binding IsMobile}"/>
+                            <TextBlock Text="{Binding Loc[tab.addresses]}" FontSize="12"
+                                       HorizontalAlignment="Center"/>
+                        </StackPanel>
+                    </TabItem.Header>
                     <Grid RowDefinitions="Auto,*" Margin="4">
                         <!-- Intestazione colonne — solo desktop -->
                         <Grid Grid.Row="0" ColumnDefinitions="90,60,*,140,60" Margin="12,4"
@@ -382,7 +431,15 @@
                 </TabItem>
 
                 <!-- 5. Contatti -->
-                <TabItem Header="{Binding Loc[tab.contacts]}">
+                <TabItem>
+                    <TabItem.Header>
+                        <StackPanel Spacing="2" HorizontalAlignment="Center">
+                            <TextBlock Text="⊕" FontSize="19" HorizontalAlignment="Center"
+                                       IsVisible="{Binding IsMobile}"/>
+                            <TextBlock Text="{Binding Loc[tab.contacts]}" FontSize="12"
+                                       HorizontalAlignment="Center"/>
+                        </StackPanel>
+                    </TabItem.Header>
                     <Grid RowDefinitions="Auto,*,Auto,Auto" Margin="4">
                         <!-- Intestazioni colonne — solo desktop -->
                         <Grid Grid.Row="0" ColumnDefinitions="180,*" Margin="12,4"
@@ -671,8 +728,9 @@
                     <TextBlock Text="{Binding Loc[server.title]}"
                                FontSize="18" FontWeight="Bold"/>
 
-                    <!-- Host + porta separati -->
+                    <!-- Host + porta — Desktop: 3 colonne -->
-                    <Grid ColumnDefinitions="*,Auto,Auto" RowDefinitions="Auto,Auto">
+                    <Grid ColumnDefinitions="*,Auto,Auto" RowDefinitions="Auto,Auto"
+                          IsVisible="{Binding IsDesktop}">
                         <TextBlock Grid.Row="0" Grid.Column="0" Text="{Binding Loc[server.host]}"
                                    FontSize="11" Foreground="Gray"/>
                         <TextBlock Grid.Row="0" Grid.Column="1" Text="{Binding Loc[server.port]}"
@@ -686,9 +744,29 @@
                         <CheckBox Grid.Row="1" Grid.Column="2" IsChecked="{Binding UseSsl}"
                                   Margin="10,2,0,0" VerticalAlignment="Center"/>
                     </Grid>
+                    <!-- Host + porta — Mobile: verticale -->
+                    <StackPanel Spacing="8" IsVisible="{Binding IsMobile}">
+                        <StackPanel Spacing="3">
+                            <TextBlock Text="{Binding Loc[server.host]}" FontSize="11" Foreground="Gray"/>
+                            <TextBox Text="{Binding ServerHost}" FontFamily="monospace"/>
+                        </StackPanel>
+                        <Grid ColumnDefinitions="*,Auto">
+                            <StackPanel Grid.Column="0" Spacing="3">
+                                <TextBlock Text="{Binding Loc[server.port]}" FontSize="11" Foreground="Gray"/>
+                                <TextBox Text="{Binding ServerPort}" FontFamily="monospace"/>
+                            </StackPanel>
+                            <StackPanel Grid.Column="1" Spacing="3" Margin="16,0,0,0"
+                                        VerticalAlignment="Center">
+                                <TextBlock Text="TLS" FontSize="11" Foreground="Gray"
+                                           HorizontalAlignment="Center"/>
+                                <CheckBox IsChecked="{Binding UseSsl}"
+                                          HorizontalAlignment="Center"/>
+                            </StackPanel>
+                        </Grid>
+                    </StackPanel>
 
-                    <!-- Azioni -->
+                    <!-- Azioni — Desktop: in riga -->
-                    <StackPanel Orientation="Horizontal" Spacing="8">
+                    <StackPanel Orientation="Horizontal" Spacing="8" IsVisible="{Binding IsDesktop}">
                         <Button Content="{Binding Loc[wallet.connect]}" Classes="accent"
                                 Command="{Binding ConnectAndSyncCommand}" IsEnabled="{Binding !IsSyncing}"/>
                         <Button Content="{Binding Loc[wallet.discover]}"
@@ -696,6 +774,18 @@
                         <Button Content="{Binding Loc[wallet.resetcert]}"
                                 Command="{Binding ResetCertificatesCommand}"/>
                     </StackPanel>
+                    <!-- Azioni — Mobile: in colonna -->
+                    <StackPanel Spacing="6" IsVisible="{Binding IsMobile}">
+                        <Button Content="{Binding Loc[wallet.connect]}" Classes="accent"
+                                Command="{Binding ConnectAndSyncCommand}" IsEnabled="{Binding !IsSyncing}"
+                                HorizontalAlignment="Stretch" HorizontalContentAlignment="Center"/>
+                        <Button Content="{Binding Loc[wallet.discover]}"
+                                Command="{Binding DiscoverServersCommand}"
+                                HorizontalAlignment="Stretch" HorizontalContentAlignment="Center"/>
+                        <Button Content="{Binding Loc[wallet.resetcert]}"
+                                Command="{Binding ResetCertificatesCommand}"
+                                HorizontalAlignment="Stretch" HorizontalContentAlignment="Center"/>
+                    </StackPanel>
 
                     <!-- Stato connessione -->
                     <StackPanel Orientation="Horizontal" Spacing="6">
@@ -725,16 +815,35 @@
                         </ListBox.Styles>
                         <ListBox.ItemTemplate>
                             <DataTemplate x:DataType="net:KnownServer">
-                                <Grid ColumnDefinitions="*,Auto">
+                                <Panel>
+                                    <!-- Desktop: host + porte in 2 colonne -->
+                                    <Grid ColumnDefinitions="*,Auto"
+                                          IsVisible="{Binding $parent[UserControl].((vm:MainWindowViewModel)DataContext).IsDesktop}">
                                         <TextBlock Grid.Column="0" Text="{Binding Host}"
                                                    FontFamily="monospace" FontSize="13"
                                                    VerticalAlignment="Center"/>
                                         <TextBlock Grid.Column="1" FontSize="11" Foreground="Gray"
                                                    VerticalAlignment="Center">
                                             <Run Text="tcp "/><Run Text="{Binding TcpPort}"/>
-                                        <Run Text=" / ssl"/><Run Text="{Binding SslPort}"/>
+                                            <Run Text="  ssl "/><Run Text="{Binding SslPort}"/>
                                         </TextBlock>
                                     </Grid>
+                                    <!-- Mobile: host sopra, porte sotto -->
+                                    <StackPanel Spacing="1" Margin="0,3"
+                                                IsVisible="{Binding $parent[UserControl].((vm:MainWindowViewModel)DataContext).IsMobile}">
+                                        <TextBlock Text="{Binding Host}"
+                                                   FontFamily="monospace" FontSize="13"
+                                                   TextTrimming="CharacterEllipsis"/>
+                                        <StackPanel Orientation="Horizontal" Spacing="12">
+                                            <TextBlock FontSize="11" Foreground="Gray">
+                                                <Run Text="tcp "/><Run Text="{Binding TcpPort}"/>
+                                            </TextBlock>
+                                            <TextBlock FontSize="11" Foreground="Gray">
+                                                <Run Text="ssl "/><Run Text="{Binding SslPort}"/>
+                                            </TextBlock>
+                                        </StackPanel>
+                                    </StackPanel>
+                                </Panel>
                             </DataTemplate>
                         </ListBox.ItemTemplate>
                     </ListBox>