Added `SaveChangesAsync` to `IRepository` for async persistence.
Introduced AutoMapper and DbContext dependencies in `Repository`.
Simplified EF Core operations by removing `#if NET48` logic.
Replaced `Task.Run` with direct EF Core calls for .NET Framework.
Updated AutoMapper version for .NET 8 and added EF Core testing.
Suppressed AutoMapper vulnerability warning in project file.
Performed general cleanup and improved maintainability.
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.
