refactor(startup): migrate from generic Host to WebApplication and integrate Web API support

- Replaced Host.CreateApplicationBuilder with WebApplication.CreateBuilder
- Added Web API service registrations (Controllers, Swagger)
- Organized startup into clear regions: Logging, Configuration, Worker, Services, Middleware
- Introduced Swagger and HTTPS middleware for API
- Improved structure and readability of Program.cs

EnvelopeGenerator.Finalizer/Program.cs

@@ -20,20 +20,28 @@ try
 {
     Log.Information("Application is starting...");
 
-    var builder = Host.CreateApplicationBuilder(args);
+    var builder = WebApplication.CreateBuilder(args);
 
-    // add serilog
+    #region Logging
     builder.Logging.ClearProviders();
     builder.Logging.AddSerilog();
+    #endregion
 
+    #region Configuration
     var config = builder.Configuration;
-
     Directory
         .GetFiles(builder.Environment.ContentRootPath, "appsettings.*.json", SearchOption.TopDirectoryOnly)
         .Where(file => Path.GetFileName(file) != $"appsettings.Development.json")
         .Where(file => Path.GetFileName(file) != $"appsettings.migration.json")
         .ToList()
         .ForEach(file => config.AddJsonFile(file, true, true));
+    #endregion
+
+    #region Web API Services
+    builder.Services.AddControllers();
+    builder.Services.AddEndpointsApiExplorer();
+    builder.Services.AddSwaggerGen();
+    #endregion
 
     #region Worker
     builder.Services.AddQuartz(q =>
@@ -92,21 +100,33 @@ try
     #endregion  Add DB Context, EG Inf. and Services
 
     builder.Services.AddOptions<GdPictureOptions>()
-        .Configure((GdPictureOptions opt, IServiceProvider sp) =>
-        {
-            var licenseKey = "GDPICTURE";
-            using var scope = sp.CreateScope();
-            var mediator = scope.ServiceProvider.GetRequiredService<IMediator>();
-            opt.License = config["GdPictureLicenseKey"] 
-                ?? mediator.ReadThirdPartyModuleLicenseAsync(licenseKey).GetAwaiter().GetResult()
-                ?? throw new InvalidOperationException($"License record not found for key: {licenseKey}");
-        });
+    .Configure((GdPictureOptions opt, IServiceProvider sp) =>
+    {
+        var licenseKey = "GDPICTURE";
+        using var scope = sp.CreateScope();
+        var mediator = scope.ServiceProvider.GetRequiredService<IMediator>();
+        opt.License = config["GdPictureLicenseKey"]
+            ?? mediator.ReadThirdPartyModuleLicenseAsync(licenseKey).GetAwaiter().GetResult()
+            ?? throw new InvalidOperationException($"License record not found for key: {licenseKey}");
+    });
 
-    var host = builder.Build();
+    var app = builder.Build();
 
-    var licence = host.Services.GetRequiredService<IOptions<GdPictureOptions>>().Value;
+    #region Web API Middleware
+    if (app.Environment.IsDevelopment())
+    {
+        app.UseSwagger();
+        app.UseSwaggerUI();
+    }
 
-    host.Run();
+    app.UseHttpsRedirection();
+
+    app.UseAuthorization();
+
+    app.MapControllers();
+    #endregion
+
+    app.Run();
 
     Log.Information("The worker was stopped.");
 }