diff --git a/backend/src/TeleWave.Api/Program.cs b/backend/src/TeleWave.Api/Program.cs
index 88d2c0f..ce1196b 100644
--- a/backend/src/TeleWave.Api/Program.cs
+++ b/backend/src/TeleWave.Api/Program.cs
@@ -143,7 +143,6 @@ app.UseDefaultFiles();
 app.UseStaticFiles();
 app.MapFallbackToFile("index.html");
 
+// Раньше здесь объявлялся `public partial class Program;` — чтобы WebApplicationTestFactory видела
+// сгенерированный класс. В ASP.NET Core 10 он и так публичный (ASP0027), объявление стало лишним.
 await app.RunAsync();
-
-/// <summary>Делает неявный класс Program доступным для WebApplicationFactory&lt;Program&gt; в интеграционных тестах.</summary>
-public partial class Program;
diff --git a/backend/src/TeleWave.Application/Library/Collections/ListCollections/ListCollectionsQueryHandler.cs b/backend/src/TeleWave.Application/Library/Collections/ListCollections/ListCollectionsQueryHandler.cs
index 52bd584..24b3fef 100644
--- a/backend/src/TeleWave.Application/Library/Collections/ListCollections/ListCollectionsQueryHandler.cs
+++ b/backend/src/TeleWave.Application/Library/Collections/ListCollections/ListCollectionsQueryHandler.cs
@@ -24,7 +24,7 @@ public sealed class ListCollectionsQueryHandler(IAppDbContext dbContext)
         var episodeCounts = await dbContext
             .Shows.AsNoTracking()
             .Where(s => showIds.Contains(s.Id))
-            .Select(s => new { s.Id, Count = s.Episodes.Count })
+            .Select(s => new { s.Id, s.Episodes.Count })
             .ToDictionaryAsync(x => x.Id, x => x.Count, cancellationToken);
 
         return collections
diff --git a/backend/src/TeleWave.Domain/Broadcast/BumperTemplate.cs b/backend/src/TeleWave.Domain/Broadcast/BumperTemplate.cs
index e2dfe6e..2cfe4e1 100644
--- a/backend/src/TeleWave.Domain/Broadcast/BumperTemplate.cs
+++ b/backend/src/TeleWave.Domain/Broadcast/BumperTemplate.cs
@@ -10,7 +10,7 @@ namespace TeleWave.Domain.Broadcast;
 /// </summary>
 public class BumperTemplate
 {
-    private readonly List<BumperTextVariant> _variants = new();
+    private readonly List<BumperTextVariant> _variants = [];
 
     public Guid Id { get; private set; }
     public Guid ChannelId { get; private set; }
diff --git a/backend/src/TeleWave.Domain/Broadcast/Channel.cs b/backend/src/TeleWave.Domain/Broadcast/Channel.cs
index dde8590..74a5e60 100644
--- a/backend/src/TeleWave.Domain/Broadcast/Channel.cs
+++ b/backend/src/TeleWave.Domain/Broadcast/Channel.cs
@@ -7,7 +7,7 @@ namespace TeleWave.Domain.Broadcast;
 /// </summary>
 public class Channel
 {
-    private readonly List<BumperTemplate> _bumperTemplates = new();
+    private readonly List<BumperTemplate> _bumperTemplates = [];
 
     public Guid Id { get; private set; }
     public string Name { get; private set; } = string.Empty;
diff --git a/backend/src/TeleWave.Domain/Library/Collection.cs b/backend/src/TeleWave.Domain/Library/Collection.cs
index 9a40875..6e626af 100644
--- a/backend/src/TeleWave.Domain/Library/Collection.cs
+++ b/backend/src/TeleWave.Domain/Library/Collection.cs
@@ -12,7 +12,7 @@ namespace TeleWave.Domain.Library;
 /// </summary>
 public class Collection
 {
-    private readonly List<CollectionItem> _items = new();
+    private readonly List<CollectionItem> _items = [];
 
     public Guid Id { get; private set; }
     public string Name { get; private set; } = string.Empty;
diff --git a/backend/src/TeleWave.Domain/Library/Genre.cs b/backend/src/TeleWave.Domain/Library/Genre.cs
index f0b4cd2..78021f2 100644
--- a/backend/src/TeleWave.Domain/Library/Genre.cs
+++ b/backend/src/TeleWave.Domain/Library/Genre.cs
@@ -10,7 +10,7 @@ namespace TeleWave.Domain.Library;
 /// </summary>
 public class Genre
 {
-    private readonly List<GenreAlias> _aliases = new();
+    private readonly List<GenreAlias> _aliases = [];
 
     public Guid Id { get; private set; }
 
diff --git a/backend/src/TeleWave.Domain/Library/Show.cs b/backend/src/TeleWave.Domain/Library/Show.cs
index 4497db8..0b9aeac 100644
--- a/backend/src/TeleWave.Domain/Library/Show.cs
+++ b/backend/src/TeleWave.Domain/Library/Show.cs
@@ -8,8 +8,8 @@ namespace TeleWave.Domain.Library;
 /// </summary>
 public class Show
 {
-    private readonly List<ShowEpisode> _episodes = new();
-    private readonly List<ShowGenre> _genres = new();
+    private readonly List<ShowEpisode> _episodes = [];
+    private readonly List<ShowGenre> _genres = [];
 
     public Guid Id { get; private set; }
     public string Name { get; private set; } = string.Empty;
diff --git a/backend/src/TeleWave.Domain/Programming/GridLayer.cs b/backend/src/TeleWave.Domain/Programming/GridLayer.cs
index 4e416b9..5da03af 100644
--- a/backend/src/TeleWave.Domain/Programming/GridLayer.cs
+++ b/backend/src/TeleWave.Domain/Programming/GridLayer.cs
@@ -9,7 +9,7 @@ namespace TeleWave.Domain.Programming;
 /// </summary>
 public class GridLayer
 {
-    private readonly List<Slot> _slots = new();
+    private readonly List<Slot> _slots = [];
 
     public Guid Id { get; private set; }
     public Guid TemplateId { get; private set; }
diff --git a/backend/src/TeleWave.Domain/Programming/Group.cs b/backend/src/TeleWave.Domain/Programming/Group.cs
index d63e32b..a486263 100644
--- a/backend/src/TeleWave.Domain/Programming/Group.cs
+++ b/backend/src/TeleWave.Domain/Programming/Group.cs
@@ -11,7 +11,7 @@ namespace TeleWave.Domain.Programming;
 /// </summary>
 public class Group
 {
-    private readonly List<GroupItem> _items = new();
+    private readonly List<GroupItem> _items = [];
 
     public Guid Id { get; private set; }
     public string Name { get; private set; } = string.Empty;
diff --git a/backend/src/TeleWave.Domain/Programming/JunctionTemplate.cs b/backend/src/TeleWave.Domain/Programming/JunctionTemplate.cs
index ccfcca5..ebeb6fd 100644
--- a/backend/src/TeleWave.Domain/Programming/JunctionTemplate.cs
+++ b/backend/src/TeleWave.Domain/Programming/JunctionTemplate.cs
@@ -7,7 +7,7 @@ namespace TeleWave.Domain.Programming;
 /// </summary>
 public class JunctionTemplate
 {
-    private readonly List<JunctionElement> _elements = new();
+    private readonly List<JunctionElement> _elements = [];
 
     public Guid Id { get; private set; }
     public Guid ChannelId { get; private set; }
diff --git a/backend/src/TeleWave.Domain/Programming/Planning/JunctionFiller.cs b/backend/src/TeleWave.Domain/Programming/Planning/JunctionFiller.cs
index 4233d09..c3e887e 100644
--- a/backend/src/TeleWave.Domain/Programming/Planning/JunctionFiller.cs
+++ b/backend/src/TeleWave.Domain/Programming/Planning/JunctionFiller.cs
@@ -3,7 +3,7 @@ namespace TeleWave.Domain.Programming.Planning;
 /// <summary>Состояние стыков в рамках прогона: когда какая врезка ставилась последний раз.</summary>
 public sealed class JunctionHistory
 {
-    private readonly Dictionary<JunctionElementKind, DateTimeOffset> _lastPlaced = new();
+    private readonly Dictionary<JunctionElementKind, DateTimeOffset> _lastPlaced = [];
 
     public bool Allows(PlanningJunctionElement element, DateTimeOffset moment)
     {
diff --git a/backend/src/TeleWave.Domain/Programming/ScheduleTemplate.cs b/backend/src/TeleWave.Domain/Programming/ScheduleTemplate.cs
index 535db57..4f2e17d 100644
--- a/backend/src/TeleWave.Domain/Programming/ScheduleTemplate.cs
+++ b/backend/src/TeleWave.Domain/Programming/ScheduleTemplate.cs
@@ -10,7 +10,7 @@ namespace TeleWave.Domain.Programming;
 /// </summary>
 public class ScheduleTemplate
 {
-    private readonly List<GridLayer> _layers = new();
+    private readonly List<GridLayer> _layers = [];
 
     public Guid Id { get; private set; }
     public Guid ChannelId { get; private set; }
diff --git a/backend/src/TeleWave.Infrastructure/Media/FfmpegBumperRenderer.cs b/backend/src/TeleWave.Infrastructure/Media/FfmpegBumperRenderer.cs
index 5a07854..84870d4 100644
--- a/backend/src/TeleWave.Infrastructure/Media/FfmpegBumperRenderer.cs
+++ b/backend/src/TeleWave.Infrastructure/Media/FfmpegBumperRenderer.cs
@@ -109,7 +109,7 @@ public sealed class FfmpegBumperRenderer(
                 segmentCount,
                 spec.Width,
                 spec.Height,
-                paths.AssetRelativePath(assetId)
+                MediaPathResolver.AssetRelativePath(assetId)
             );
         }
         finally
diff --git a/backend/src/TeleWave.Infrastructure/Media/FfmpegMediaProcessor.cs b/backend/src/TeleWave.Infrastructure/Media/FfmpegMediaProcessor.cs
index 1888629..140791f 100644
--- a/backend/src/TeleWave.Infrastructure/Media/FfmpegMediaProcessor.cs
+++ b/backend/src/TeleWave.Infrastructure/Media/FfmpegMediaProcessor.cs
@@ -81,7 +81,7 @@ public sealed class FfmpegMediaProcessor(
             outHeight,
             "h264",
             "aac",
-            paths.AssetRelativePath(assetId)
+            MediaPathResolver.AssetRelativePath(assetId)
         );
     }
 
diff --git a/backend/src/TeleWave.Infrastructure/Media/MediaClaimingBackgroundService.cs b/backend/src/TeleWave.Infrastructure/Media/MediaClaimingBackgroundService.cs
index 0a6b0a7..af3054b 100644
--- a/backend/src/TeleWave.Infrastructure/Media/MediaClaimingBackgroundService.cs
+++ b/backend/src/TeleWave.Infrastructure/Media/MediaClaimingBackgroundService.cs
@@ -26,8 +26,10 @@ internal abstract class MediaClaimingBackgroundService<TJob>(
 ) : BackgroundService
     where TJob : class
 {
-    // Периодически перепроверяем БД, даже если сигнал не пришёл — страховка на любой случай.
-    private static readonly TimeSpan IdlePoll = TimeSpan.FromSeconds(30);
+    // Период опроса вынесен в неродовой класс: статическое поле обобщённого типа существует
+    // отдельной копией на каждую замкнутую специализацию, то есть выглядит общей константой,
+    // не будучи ею. Здесь значение одинаковое и вреда нет, но читателя это вводит в заблуждение.
+    private static TimeSpan IdlePoll => MediaClaimingDefaults.IdlePoll;
 
     /// <summary>true — воркер обслуживает только сгенерированные ассеты, false — только остальные.</summary>
     protected abstract bool HandlesGenerated { get; }
@@ -238,3 +240,10 @@ internal abstract class MediaClaimingBackgroundService<TJob>(
             ? x => x.Status == status && x.Source == MediaSource.Generated
             : x => x.Status == status && x.Source != MediaSource.Generated;
 }
+
+/// <summary>Общие для всех воркеров значения — одно на процесс, а не на специализацию.</summary>
+internal static class MediaClaimingDefaults
+{
+    /// <summary>Периодически перепроверяем БД, даже если сигнал не пришёл — страховка на любой случай.</summary>
+    public static readonly TimeSpan IdlePoll = TimeSpan.FromSeconds(30);
+}
diff --git a/backend/src/TeleWave.Infrastructure/Media/MediaPathResolver.cs b/backend/src/TeleWave.Infrastructure/Media/MediaPathResolver.cs
index 3eedf9e..ac1a4fc 100644
--- a/backend/src/TeleWave.Infrastructure/Media/MediaPathResolver.cs
+++ b/backend/src/TeleWave.Infrastructure/Media/MediaPathResolver.cs
@@ -64,7 +64,7 @@ public sealed class MediaPathResolver
     public string AssetDir(Guid assetId) =>
         EnsureWithinRoot(Path.Combine(AssetsDir, assetId.ToString("N")));
 
-    public string AssetRelativePath(Guid assetId) => $"assets/{assetId:N}";
+    public static string AssetRelativePath(Guid assetId) => $"assets/{assetId:N}";
 
     /// <summary>Путь к файлу сегмента внутри каталога ассета (имя файла проверяется на traversal).</summary>
     public string SegmentPath(Guid assetId, string fileName)
diff --git a/backend/src/TeleWave.Infrastructure/Media/SignalQueue.cs b/backend/src/TeleWave.Infrastructure/Media/SignalQueue.cs
index dd09e51..9dd418a 100644
--- a/backend/src/TeleWave.Infrastructure/Media/SignalQueue.cs
+++ b/backend/src/TeleWave.Infrastructure/Media/SignalQueue.cs
@@ -20,7 +20,10 @@ public abstract class SignalQueue
     public async ValueTask WaitAsync(CancellationToken cancellationToken)
     {
         await _channel.Reader.ReadAsync(cancellationToken);
-        // Сдренировать накопившиеся сигналы — работу всё равно берём из БД пачкой.
-        while (_channel.Reader.TryRead(out _)) { }
+        while (_channel.Reader.TryRead(out _))
+        {
+            // Тело пустое намеренно: сигналы дренируются ради побочного эффекта чтения — работу
+            // обработчик всё равно берёт из БД пачкой, и сами значения не нужны.
+        }
     }
 }
diff --git a/backend/src/TeleWave.Infrastructure/Metadata/MetadataProviderResolver.cs b/backend/src/TeleWave.Infrastructure/Metadata/MetadataProviderResolver.cs
index 51e540c..4468254 100644
--- a/backend/src/TeleWave.Infrastructure/Metadata/MetadataProviderResolver.cs
+++ b/backend/src/TeleWave.Infrastructure/Metadata/MetadataProviderResolver.cs
@@ -7,7 +7,7 @@ namespace TeleWave.Infrastructure.Metadata;
 public sealed class MetadataProviderResolver : IMetadataProviderResolver
 {
     private readonly Dictionary<string, IMetadataProvider> _byKey;
-    private readonly List<string> _available = new();
+    private readonly List<string> _available = [];
 
     public MetadataProviderResolver(
         IEnumerable<IMetadataProvider> providers,