초기 커밋: SheetMe 서식생성기 (P0~P5 완료 상태)

레거시 서식생성기(VB.NET WinForms) 대체용 C#/.NET 10 WPF 디자이너.
기준선: 실DB 활성 디자인 1,271건 왕복 의미론 diff 0 / 예외 0, 단위 테스트 49/49.

이 커밋에 함께 포함된 자격증명 분리:
- appsettings.json 을 __HOST__/__PASSWORD__ 플레이스홀더로 전환
- 실접속 정보는 appsettings.Development.json 으로 분리(.gitignore 제외,
  csproj Debug 조건부 복사라 Release 산출물에 실리지 않음)
- ConfigLoader 를 환경변수 > Development > appsettings 순 레이어링으로 변경,
  미치환 플레이스홀더는 '미설정'으로 간주

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

src/SheetMe.Designer/Views/RecordWordDialogView.xaml

@@ -0,0 +1,45 @@
+<Window x:Class="SheetMe.Designer.Views.RecordWordDialogView"
+        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        Title="상용구 관리" Width="560" Height="520" MinWidth="480" MinHeight="380"
+        WindowStartupLocation="CenterOwner" ShowInTaskbar="False">
+    <DockPanel Margin="12">
+        <TextBlock x:Name="HeaderText" DockPanel.Dock="Top" Foreground="{DynamicResource B.Muted}"
+                   TextWrapping="Wrap" Margin="0,0,0,8"/>
+
+        <!-- 입력/버튼 -->
+        <DockPanel DockPanel.Dock="Bottom" Margin="0,8,0,0">
+            <Button DockPanel.Dock="Right" Content="닫기" Padding="16,4" Margin="8,0,0,0" IsCancel="True"/>
+            <Button DockPanel.Dock="Right" Content="추가" Padding="16,4" Click="OnAdd" IsDefault="True"/>
+            <TextBox x:Name="NewWordBox" Padding="4,3" Margin="0,0,8,0"
+                     VerticalContentAlignment="Center"
+                     ToolTip="새 상용구 입력 후 Enter 또는 추가"/>
+        </DockPanel>
+
+        <!-- 목록 + 우측 조작 -->
+        <Grid>
+            <Grid.ColumnDefinitions>
+                <ColumnDefinition Width="*"/>
+                <ColumnDefinition Width="Auto"/>
+            </Grid.ColumnDefinitions>
+
+            <ListBox x:Name="WordList" Grid.Column="0" FontSize="13"
+                     MouseDoubleClick="OnEdit"
+                     ScrollViewer.HorizontalScrollBarVisibility="Disabled">
+                <ListBox.ItemTemplate>
+                    <DataTemplate>
+                        <TextBlock Text="{Binding Value}" TextWrapping="Wrap" Margin="2"/>
+                    </DataTemplate>
+                </ListBox.ItemTemplate>
+            </ListBox>
+
+            <StackPanel Grid.Column="1" Margin="8,0,0,0">
+                <Button Content="수정" Padding="10,3" Click="OnEdit"/>
+                <Button Content="삭제" Padding="10,3" Margin="0,6,0,0" Click="OnRemove"/>
+                <Separator Margin="0,10"/>
+                <Button Content="위로 ▲" Padding="10,3" Click="OnMoveUp"/>
+                <Button Content="아래로 ▼" Padding="10,3" Margin="0,6,0,0" Click="OnMoveDown"/>
+            </StackPanel>
+        </Grid>
+    </DockPanel>
+</Window>