chore: HERV 통합 저장소 초기 커밋

- 펌웨어(program), C# 대시보드(TestProgram), 시뮬레이터(Simulator),
  프로토콜/문서(Protocol, doc) 전체를 단일 저장소로 통합
- program 폴더의 별도 git 저장소를 제거하고 통합 저장소에 흡수
- 빌드 산출물(program/build, bin/obj, *.o/.elf/.bin/.hex 등) .gitignore 처리
- 사내 Synology NAS Git 원격 연결 예정

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Simulator/ERVSimulator/Program/ERVSimulator.csproj

@@ -0,0 +1,27 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>WinExe</OutputType>
+    <TargetFramework>net10.0-windows</TargetFramework>
+    <UseWPF>true</UseWPF>
+    <Nullable>enable</Nullable>
+    <RootNamespace>ERVSimulator</RootNamespace>
+    <AssemblyName>ERVSimulator</AssemblyName>
+    <StartupObject>ERVSimulator.App</StartupObject>
+    <RuntimeIdentifier>win-x64</RuntimeIdentifier>
+    <SelfContained>true</SelfContained>
+    <PublishSingleFile>true</PublishSingleFile>
+    <IncludeNativeLibrariesForSelfExtract>true</IncludeNativeLibrariesForSelfExtract>
+    <IncludeAllContentForSelfExtract>true</IncludeAllContentForSelfExtract>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="System.IO.Ports" Version="10.0.5" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <!-- ERV↔Dashboard 공용 프로토콜 (단일 진실원본) -->
+    <ProjectReference Include="..\..\..\TestProgram\ErvProtocol\ErvProtocol.csproj" />
+  </ItemGroup>
+
+</Project>