Added "UseWindowsService" and "UseKestrelConfig" flags to appsettings.json. Defined a custom Kestrel HTTP endpoint at http://localhost:1111 to control how the application is hosted and served.
Added "SupportedCultures" for localization support and a "ConnectionStrings" section with a default SQL Server connection string. Also reformatted "AllowedHosts" for consistency.
Refactored Worker to accept IConfiguration and read the delay interval from "Worker:DelayMilliseconds" in appsettings.json, replacing the previously hardcoded value. This allows the worker execution interval to be configured without code changes. Added a minimum delay safeguard and updated appsettings.json accordingly.
Created a new EnvelopeGenerator.ServiceHost project targeting .NET 8.0. Set up minimal API host with controllers, Swagger/OpenAPI support, and development configuration files. Updated solution to include the new project with appropriate build settings.
