Make the media stream filter index covering

src/Jellyfin.Database/Jellyfin.Database.Implementations/ModelConfiguration/MediaStreamInfoConfiguration.cs

@@ -13,6 +13,9 @@ public class MediaStreamInfoConfiguration : IEntityTypeConfiguration<MediaStream
     public void Configure(EntityTypeBuilder<MediaStreamInfo> builder)
     {
         builder.HasKey(e => new { e.ItemId, e.StreamIndex });
-        builder.HasIndex(e => new { e.StreamType, e.ItemId });
+
+        // Covering index for the stream filters. ItemId comes second because it is what they project and
+        // dedupe on; Language and IsExternal follow only to keep their predicates off the table.
+        builder.HasIndex(e => new { e.StreamType, e.ItemId, e.Language, e.IsExternal });
     }
 }

src/Jellyfin.Database/Jellyfin.Database.Providers.Sqlite/Migrations/20260812050902_AddMediaStreamFilterIndex.Designer.cs

@@ -11,8 +11,8 @@ using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
 namespace Jellyfin.Database.Providers.Sqlite.Migrations
 {
     [DbContext(typeof(JellyfinDbContext))]
-    [Migration("20260811145224_AddMediaStreamTypeItemIdIndex")]
-    partial class AddMediaStreamTypeItemIdIndex
+    [Migration("20260812050902_AddMediaStreamFilterIndex")]
+    partial class AddMediaStreamFilterIndex
     {
         /// <inheritdoc />
         protected override void BuildTargetModel(ModelBuilder modelBuilder)
@@ -1015,7 +1015,7 @@ namespace Jellyfin.Database.Providers.Sqlite.Migrations
 
                     b.HasKey("ItemId", "StreamIndex");
 
-                    b.HasIndex("StreamType", "ItemId");
+                    b.HasIndex("StreamType", "ItemId", "Language", "IsExternal");
 
                     b.ToTable("MediaStreamInfos");
 

src/Jellyfin.Database/Jellyfin.Database.Providers.Sqlite/Migrations/20260812050902_AddMediaStreamFilterIndex.cs

@@ -1,26 +1,26 @@
-using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Migrations;
 
 #nullable disable
 
 namespace Jellyfin.Database.Providers.Sqlite.Migrations
 {
     /// <inheritdoc />
-    public partial class AddMediaStreamTypeItemIdIndex : Migration
+    public partial class AddMediaStreamFilterIndex : Migration
     {
         /// <inheritdoc />
         protected override void Up(MigrationBuilder migrationBuilder)
         {
             migrationBuilder.CreateIndex(
-                name: "IX_MediaStreamInfos_StreamType_ItemId",
+                name: "IX_MediaStreamInfos_StreamType_ItemId_Language_IsExternal",
                 table: "MediaStreamInfos",
-                columns: ["StreamType", "ItemId"]);
+                columns: new[] { "StreamType", "ItemId", "Language", "IsExternal" });
         }
 
         /// <inheritdoc />
         protected override void Down(MigrationBuilder migrationBuilder)
         {
             migrationBuilder.DropIndex(
-                name: "IX_MediaStreamInfos_StreamType_ItemId",
+                name: "IX_MediaStreamInfos_StreamType_ItemId_Language_IsExternal",
                 table: "MediaStreamInfos");
         }
     }

src/Jellyfin.Database/Jellyfin.Database.Providers.Sqlite/Migrations/JellyfinDbModelSnapshot.cs

@@ -1012,7 +1012,7 @@ namespace Jellyfin.Server.Implementations.Migrations
 
                     b.HasKey("ItemId", "StreamIndex");
 
-                    b.HasIndex("StreamType", "ItemId");
+                    b.HasIndex("StreamType", "ItemId", "Language", "IsExternal");
 
                     b.ToTable("MediaStreamInfos");