lightfinder support, context pairing

LightlessSyncAPI/Dto/User/BroadcastStatusBatchDto.cs

@@ -0,0 +1,9 @@
+using MessagePack;
+
+namespace LightlessSync.API.Dto.User;
+
+[MessagePackObject(keyAsPropertyName: true)]
+public sealed class BroadcastStatusBatchDto
+{
+    public Dictionary<string, BroadcastStatusInfoDto> Results { get; init; } = new();
+}

LightlessSyncAPI/Dto/User/BroadcastStatusInfoDto.cs

@@ -0,0 +1,12 @@
+using MessagePack;
+
+namespace LightlessSync.API.Dto.User;
+
+[MessagePackObject(keyAsPropertyName: true)]
+public sealed class BroadcastStatusInfoDto
+{
+    public required string HashedCID { get; init; }
+    public required bool IsBroadcasting { get; init; }
+    public TimeSpan? TTL { get; init; }
+    public string? GID { get; init; }
+}

LightlessSyncAPI/Dto/User/BroadcastStatusRequestDto.cs

@@ -0,0 +1,12 @@
+using MessagePack;
+
+namespace LightlessSync.API.Dto.User;
+
+[MessagePackObject(keyAsPropertyName: true)]
+public sealed class BroadcastStatusRequestDto
+{
+    public required string HashedCID { get; init; }
+    public required bool Enabled { get; init; }
+    public string? GID { get; init; }
+}
+