feat: React 프론트엔드 기능 대폭 확장

- 월별근무표: 휴일/근무일 관리, 자동 초기화
- 메일양식: 템플릿 CRUD, To/CC/BCC 설정
- 그룹정보: 부서 관리, 비트 연산 기반 권한 설정
- 업무일지: 수정 성공 메시지 제거, 오늘 근무시간 필터링 수정
- 웹소켓 메시지 type 충돌 버그 수정

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

Project/EETGW.csproj

@@ -220,11 +220,11 @@
     </Reference>
   </ItemGroup>
   <ItemGroup>
-    <Compile Include="Dialog\fDashboardNew.cs">
+    <Compile Include="Dialog\fDashboard.cs">
       <SubType>Form</SubType>
     </Compile>
-    <Compile Include="Dialog\fDashboardNew.Designer.cs">
-      <DependentUpon>fDashboardNew.cs</DependentUpon>
+    <Compile Include="Dialog\fDashboard.Designer.cs">
+      <DependentUpon>fDashboard.cs</DependentUpon>
     </Compile>
     <Compile Include="fSystemCheck.cs">
       <SubType>Form</SubType>
@@ -358,6 +358,12 @@
     <Compile Include="Web\MachineBridge\MachineBridge.Jobreport.cs" />
     <Compile Include="Web\MachineBridge\MachineBridge.Kuntae.cs" />
     <Compile Include="Web\MachineBridge\MachineBridge.Project.cs" />
+    <Compile Include="Web\MachineBridge\MachineBridge.User.cs" />
+    <Compile Include="Web\MachineBridge\MachineBridge.UserList.cs" />
+    <Compile Include="Web\MachineBridge\MachineBridge.Holiday.cs" />
+    <Compile Include="Web\MachineBridge\MachineBridge.MailForm.cs" />
+    <Compile Include="Web\MachineBridge\MachineBridge.UserGroup.cs" />
+    <Compile Include="Web\MachineBridge\WebSocketServer.cs" />
     <Compile Include="Web\Model\PageModel.cs" />
     <Compile Include="Web\Model\ProjectModel.cs" />
     <Compile Include="Web\Model\TodoModel.cs" />
@@ -365,7 +371,6 @@
     <Compile Include="Settings.cs" />
     <Compile Include="SqlServerTypes\Loader.cs" />
     <Compile Include="StateMachine\ReportUserData.cs" />
-    <Compile Include="Web\WebSocketServer.cs" />
     <Compile Include="_Common\fADSUserList.cs">
       <SubType>Form</SubType>
     </Compile>
@@ -426,8 +431,8 @@
     <EmbeddedResource Include="Dev\fDisableItem.resx">
       <DependentUpon>fDisableItem.cs</DependentUpon>
     </EmbeddedResource>
-    <EmbeddedResource Include="Dialog\fDashboardNew.resx">
-      <DependentUpon>fDashboardNew.cs</DependentUpon>
+    <EmbeddedResource Include="Dialog\fDashboard.resx">
+      <DependentUpon>fDashboard.cs</DependentUpon>
     </EmbeddedResource>
     <EmbeddedResource Include="Dialog\fDebug.resx">
       <DependentUpon>fDebug.cs</DependentUpon>
@@ -732,6 +737,9 @@
   <ItemGroup />
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <Import Project="..\packages\Microsoft.Web.WebView2.1.0.2210.55\build\Microsoft.Web.WebView2.targets" Condition="Exists('..\packages\Microsoft.Web.WebView2.1.0.2210.55\build\Microsoft.Web.WebView2.targets')" />
+  <PropertyGroup>
+    <PostBuildEvent>xcopy /E /I /Y "$(ProjectDir)frontend\dist\*" "$(TargetDir)Web\Dist\"</PostBuildEvent>
+  </PropertyGroup>
   <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
     <PropertyGroup>
       <ErrorText>이 프로젝트는 이 컴퓨터에 없는 NuGet 패키지를 참조합니다. 해당 패키지를 다운로드하려면 NuGet 패키지 복원을 사용하십시오. 자세한 내용은 http://go.microsoft.com/fwlink/?LinkID=322105를 참조하십시오. 누락된 파일은 {0}입니다.</ErrorText>