Add broadcast scheduling features: implement Show and Channel entities, enhance AppDbContext and DependencyInjection for broadcasting, and update API routing. Include migration for new database schema and update documentation for broadcast-related functionalities.

backend/src/TeleWave.Infrastructure/DependencyInjection.cs

@@ -5,7 +5,10 @@ using Microsoft.EntityFrameworkCore;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.IdentityModel.Tokens;
+using TeleWave.Application.Broadcast.Scheduling;
 using TeleWave.Application.Common.Interfaces;
+using TeleWave.Domain.Broadcast.Scheduling;
+using TeleWave.Infrastructure.Broadcast;
 using TeleWave.Infrastructure.Identity;
 using TeleWave.Infrastructure.Media;
 using TeleWave.Infrastructure.Persistence;
@@ -87,10 +90,21 @@ public static class DependencyInjection
         services.AddScoped<DbInitializer>();
 
         AddMedia(services, configuration);
+        AddBroadcast(services, configuration);
 
         return services;
     }
 
+    /// <summary>Планировщик расписания: генератор, источник случайности и фоновый сервис горизонта.</summary>
+    private static void AddBroadcast(IServiceCollection services, IConfiguration configuration)
+    {
+        services.Configure<SchedulerOptions>(configuration.GetSection(SchedulerOptions.SectionName));
+
+        services.AddSingleton<IRandomSource, SystemRandomSource>();
+        services.AddScoped<ScheduleGenerator>();
+        services.AddHostedService<SchedulingBackgroundService>();
+    }
+
     /// <summary>Хранилище медиа, обработка ffmpeg, очередь и фоновые сервисы (очередь + inbox-сканер).</summary>
     private static void AddMedia(IServiceCollection services, IConfiguration configuration)
     {