Add Infrastructure layer with EF6/EF Core support

Introduced a robust Infrastructure layer for the ECMJobRunner system:
- Added `AGENTS.md` with detailed project documentation.
- Implemented generic repository and unit-of-work patterns.
- Added `CfgProfileRepository`, `ProfileSqlJobRepository`, and `ProfileHistoryRepository`.
- Integrated AutoMapper for DTO-to-entity mapping.
- Added multi-framework support for .NET Framework 4.8 (EF6) and .NET 8.0 (EF Core) using conditional compilation.
- Updated `ECMJobRunner.Infrastructure.csproj` with metadata fixes and dependencies.
- Introduced dependency injection extension for .NET 8.0.
- Enhanced project structure and database context with entity mappings.

ECMJobRunner.Infrastructure/ECMJobRunner.Infrastructure.csproj

@@ -4,18 +4,24 @@
 		<LangVersion>latest</LangVersion>
 		<Nullable>enable</Nullable>
 		<DocumentationFile>bin\$(Configuration)\$(TargetFramework)\$(MSBuildProjectName).xml</DocumentationFile>
-		<PackageId>EECMJobRunner.Infrastructure</PackageId>
+		<PackageId>ECMJobRunner.Infrastructure</PackageId>
 		<Authors>Digital Data GmbH</Authors>
 		<Company>Digital Data GmbH</Company>
-		<Product>ECMJobRunner.Domain</Product>
+		<Product>ECMJobRunner.Infrastructure</Product>
 		<Copyright>Copyright 2026</Copyright>
 		<RepositoryUrl>http://git.dd:3000/AppStd/ECMJobRunner.git</RepositoryUrl>
-		<PackageTags>digital data ecm job runner Infrastructure</PackageTags>
+		<PackageTags>digital data ecm job runner infrastructure</PackageTags>
 	</PropertyGroup>
 
+	<ItemGroup>
+		<ProjectReference Include="..\ECMJobRunner.Domain\ECMJobRunner.Domain.csproj" />
+	</ItemGroup>
+
 	<ItemGroup Condition="'$(TargetFramework)' == 'net480'">
 		<!-- Entity Framework 6 for .NET Framework 4.8 -->
 		<PackageReference Include="EntityFramework" Version="6.5.1" />
+		<!-- AutoMapper for .NET Framework 4.8 -->
+		<PackageReference Include="AutoMapper" Version="10.1.1" />
 	</ItemGroup>
 
 	<ItemGroup Condition="'$(TargetFramework)' == 'net8.0'">
@@ -23,5 +29,7 @@
 		<PackageReference Include="Microsoft.EntityFrameworkCore" Version="8.0.11" />
 		<PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="8.0.11" />
 		<PackageReference Include="Microsoft.EntityFrameworkCore.Relational" Version="8.0.11" />
+		<!-- AutoMapper for .NET 8 -->
+		<PackageReference Include="AutoMapper" Version="13.0.1" />
 	</ItemGroup>
 </Project>