.NET Framework 4.8 업그레이드 및 WebView2 통합

- 모든 프로젝트를 .NET Framework 4.0 → 4.8로 업그레이드
- WebView2 NuGet 패키지 추가 (v1.0.3537.50)
- 사용자 매뉴얼 폼 추가 (Frm_WebManual)
  * WebView2 컨트롤 통합
  * localhost:58123 자동 로드
  * MDI 메인 메뉴에 Manual 항목 추가

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

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

ArinWarev1/ECO2_2025V1.vbproj

@@ -29,7 +29,7 @@
     <OldToolsVersion>3.5</OldToolsVersion>
     <ApplicationManifest>My Project\app.manifest</ApplicationManifest>
     <ApplicationIcon>002.ico</ApplicationIcon>
-    <TargetFrameworkVersion>v4.0</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.8</TargetFrameworkVersion>
     <TargetFrameworkProfile />
     <PublishUrl>ftp://tindevil.com/www/mynetapp/t4/</PublishUrl>
     <Install>true</Install>
@@ -51,6 +51,8 @@
     <ApplicationVersion>1.0.0.%2a</ApplicationVersion>
     <UseApplicationTrust>false</UseApplicationTrust>
     <BootstrapperEnabled>true</BootstrapperEnabled>
+    <NuGetPackageImportStamp>
+    </NuGetPackageImportStamp>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
@@ -133,6 +135,15 @@
     </Reference>
     <Reference Include="Microsoft.ReportViewer.Common, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />
     <Reference Include="Microsoft.ReportViewer.WinForms, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL" />
+    <Reference Include="Microsoft.Web.WebView2.Core, Version=1.0.3537.50, Culture=neutral, PublicKeyToken=2a8ab48044d2601e, processorArchitecture=MSIL">
+      <HintPath>..\packages\Microsoft.Web.WebView2.1.0.3537.50\lib\net462\Microsoft.Web.WebView2.Core.dll</HintPath>
+    </Reference>
+    <Reference Include="Microsoft.Web.WebView2.WinForms, Version=1.0.3537.50, Culture=neutral, PublicKeyToken=2a8ab48044d2601e, processorArchitecture=MSIL">
+      <HintPath>..\packages\Microsoft.Web.WebView2.1.0.3537.50\lib\net462\Microsoft.Web.WebView2.WinForms.dll</HintPath>
+    </Reference>
+    <Reference Include="Microsoft.Web.WebView2.Wpf, Version=1.0.3537.50, Culture=neutral, PublicKeyToken=2a8ab48044d2601e, processorArchitecture=MSIL">
+      <HintPath>..\packages\Microsoft.Web.WebView2.1.0.3537.50\lib\net462\Microsoft.Web.WebView2.Wpf.dll</HintPath>
+    </Reference>
     <Reference Include="Owin, Version=1.0.0.0, Culture=neutral, PublicKeyToken=f0ebd12fd5e55cc5, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
       <HintPath>..\lib\Owin.dll</HintPath>
@@ -197,6 +208,12 @@
     <Compile Include="Forms_Basic\frm_batch.vb">
       <SubType>Form</SubType>
     </Compile>
+    <Compile Include="Forms_Basic\Frm_WebManual.Designer.vb">
+      <DependentUpon>Frm_WebManual.vb</DependentUpon>
+    </Compile>
+    <Compile Include="Forms_Basic\Frm_WebManual.vb">
+      <SubType>Form</SubType>
+    </Compile>
     <Compile Include="Forms_Basic\fSelectWeatherGroup.Designer.vb">
       <DependentUpon>fSelectWeatherGroup.vb</DependentUpon>
     </Compile>
@@ -524,6 +541,9 @@
     <EmbeddedResource Include="Forms_Basic\frm_batch.resx">
       <DependentUpon>frm_batch.vb</DependentUpon>
     </EmbeddedResource>
+    <EmbeddedResource Include="Forms_Basic\Frm_WebManual.resx">
+      <DependentUpon>Frm_WebManual.vb</DependentUpon>
+    </EmbeddedResource>
     <EmbeddedResource Include="Forms_Basic\Frm_Work.resx">
       <DependentUpon>Frm_Work.vb</DependentUpon>
       <SubType>Designer</SubType>
@@ -729,6 +749,7 @@
     </None>
   </ItemGroup>
   <ItemGroup>
+    <None Include="packages.config" />
     <None Include="Resources\user_24.png" />
   </ItemGroup>
   <ItemGroup>
@@ -886,6 +907,13 @@
   </ItemGroup>
   <ItemGroup />
   <Import Project="$(MSBuildBinPath)\Microsoft.VisualBasic.targets" />
+  <Import Project="..\packages\Microsoft.Web.WebView2.1.0.3537.50\build\Microsoft.Web.WebView2.targets" Condition="Exists('..\packages\Microsoft.Web.WebView2.1.0.3537.50\build\Microsoft.Web.WebView2.targets')" />
+  <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
+    <PropertyGroup>
+      <ErrorText>이 프로젝트는 이 컴퓨터에 없는 NuGet 패키지를 참조합니다. 해당 패키지를 다운로드하려면 NuGet 패키지 복원을 사용하십시오. 자세한 내용은 http://go.microsoft.com/fwlink/?LinkID=322105를 참조하십시오. 누락된 파일은 {0}입니다.</ErrorText>
+    </PropertyGroup>
+    <Error Condition="!Exists('..\packages\Microsoft.Web.WebView2.1.0.3537.50\build\Microsoft.Web.WebView2.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\Microsoft.Web.WebView2.1.0.3537.50\build\Microsoft.Web.WebView2.targets'))" />
+  </Target>
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
        Other similar extension points exist, see Microsoft.Common.targets.
   <Target Name="BeforeBuild">