- Updated `AuthenticationController` to return user data instead of token.
- Added `ITargetService` and `ITargetRepository` to `Program.cs`.
- Enhanced `appsettings.json` with connection timeout and security notes.
- Modified `IAuthService` to reflect new authentication response structure.
- Implemented connection retry mechanism in `DataAccess.cs`.
- Refactored UI components to use MUI styling in `Layout.tsx`, `App.tsx`, and others.
- Created new files for target management, including `TargetsController`, `TargetUpdateDto`, and related services.
- Added `TargetEdit` modal for editing target details and `LineChartSample` for data visualization.
- Updated package dependencies in `package-lock.json` and project file.
