feat: integrate EnvelopeGenerator infrastructure, DB context, and services

- Added references to EnvelopeGenerator.Application, Infrastructure, and EF Core.
- Configured DB context with SQL Server connection string from configuration.
- Registered EnvelopeGenerator services and infrastructure with dependency injection.
- Preserved warnings suppression for obsolete members.
- Structured DI registration under a dedicated region for clarity.

EnvelopeGenerator.Finalizer/EnvelopeGenerator.Finalizer.csproj

@@ -8,6 +8,12 @@
   </PropertyGroup>
 
   <ItemGroup>
+    <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="9.0.10" />
     <PackageReference Include="Microsoft.Extensions.Hosting" Version="8.0.1" />
   </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\EnvelopeGenerator.Application\EnvelopeGenerator.Application.csproj" />
+    <ProjectReference Include="..\EnvelopeGenerator.Infrastructure\EnvelopeGenerator.Infrastructure.csproj" />
+  </ItemGroup>
 </Project>

EnvelopeGenerator.Finalizer/Program.cs

@@ -1,7 +1,37 @@
+using EnvelopeGenerator.Application;
 using EnvelopeGenerator.Finalizer;
+using EnvelopeGenerator.Infrastructure;
+using Microsoft.EntityFrameworkCore;
 
 var builder = Host.CreateApplicationBuilder(args);
+var config = builder.Configuration;
 builder.Services.AddHostedService<Worker>();
 
+#region Add DB Context, EG Inf. and Services
+var cnnStrName = "Default";
+var connStr = config.GetConnectionString(cnnStrName)
+    ?? throw new InvalidOperationException($"Connection string '{cnnStrName}' is missing in the application configuration.");
+
+#pragma warning disable CS0618 // Type or member is obsolete
+builder.Services.AddEnvelopeGeneratorInfrastructureServices(
+    opt =>
+    {
+        opt.AddDbTriggerParams(config);
+        opt.AddDbContext((provider, options) =>
+        {
+            var logger = provider.GetRequiredService<ILogger<EGDbContext>>();
+            options.UseSqlServer(connStr)
+                    .LogTo(log => logger.LogInformation("{log}", log), Microsoft.Extensions.Logging.LogLevel.Trace)
+                    .EnableSensitiveDataLogging()
+                    .EnableDetailedErrors();
+        });
+    });
+#pragma warning restore CS0618 // Type or member is obsolete
+
+#pragma warning disable CS0618 // Type or member is obsolete
+builder.Services.AddEnvelopeGeneratorServices(config);
+#pragma warning restore CS0618 // Type or member is obsolete
+#endregion  Add DB Context, EG Inf. and Services
+
 var host = builder.Build();
 host.Run();