add:增加文档和上位机

上位机/YKC/LoginWindow.xaml

@@ -0,0 +1,39 @@
+<Window x:Class="YKC.LoginWindow"
+        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        Title="登录 - 百瑞充电桩网关管理" Height="420" Width="400"
+        WindowStartupLocation="CenterScreen"
+        WindowStyle="None" AllowsTransparency="True"
+        Background="Transparent"
+        ResizeMode="NoResize">
+
+    <Border Background="White" CornerRadius="8" Padding="40,36"
+            Margin="0" BorderBrush="#E2E8F0" BorderThickness="1"
+            Effect="{Binding RelativeSource={RelativeSource Self}, Path=Tag}">
+        <Border.Tag>
+            <DropShadowEffect BlurRadius="20" ShadowDepth="4" Color="#CC000000" Opacity="0.12"/>
+        </Border.Tag>
+
+        <StackPanel>
+            <TextBlock Text="充电桩管理系统" FontSize="22" FontWeight="Bold"
+                       Foreground="#1E293B" HorizontalAlignment="Center" Margin="0,0,0,4"/>
+            <TextBlock Text="百瑞充电桩网关后台" FontSize="13" Foreground="#94A3B8"
+                       HorizontalAlignment="Center" Margin="0,0,0,28"/>
+
+            <TextBlock Text="账号" Style="{StaticResource FieldLabel}"/>
+            <TextBox x:Name="txtUsername" Style="{StaticResource FormInput}"
+                     Height="50" FontSize="14" Margin="0,0,0,16" Text="admin"/>
+
+            <TextBlock Text="密码" Style="{StaticResource FieldLabel}"/>
+            <PasswordBox x:Name="txtPassword" Style="{StaticResource PwdInput}"
+                         Height="50" FontSize="14" Margin="0,0,0,24"/>
+            <Button x:Name="btnLogin" Content="登 录"
+                    Style="{StaticResource BtnPrimary}"
+                    Height="42" FontSize="15"
+                    Click="Login_Click"/>
+
+            <TextBlock x:Name="txtError" Foreground="#EF4444" FontSize="13"
+                       HorizontalAlignment="Center" Margin="0,12,0,0"/>
+        </StackPanel>
+    </Border>
+</Window>