Add Copilot instructions and update version to 9.1.3

Author: electricessence

.github/copilot-instructions.md

@@ -0,0 +1,4 @@
+# Copilot Instructions
+
+## General Guidelines
+- Prefer keeping `TaskScheduler.Current` in `BufferingChannelReader` completion continuation; changing to `TaskScheduler.Default` breaks intended behavior.

Open.ChannelExtensions/Open.ChannelExtensions.csproj

@@ -22,7 +22,7 @@
 		<RepositoryType>git</RepositoryType>
 		<GeneratePackageOnBuild>true</GeneratePackageOnBuild>
 		<GenerateDocumentationFile>true</GenerateDocumentationFile>
-		<Version>9.1.2</Version>
+		<Version>9.1.3</Version>
 		<PackageReleaseNotes>Ensure the current task scheduler is used and that it can be configured.</PackageReleaseNotes>
 		<PackageLicenseExpression>MIT</PackageLicenseExpression>
 		<PublishRepositoryUrl>true</PublishRepositoryUrl>

Open.ChannelExtensions/Readers/BatchingChannelReader.cs

@@ -245,22 +245,13 @@ protected override async ValueTask<bool> WaitToReadAsyncCore(
 		}
 
 		// WhenAny will not throw when a task is cancelled.
-		Task<bool> sTask = s.AsTask();
-		await Task.WhenAny(sTask, b).ConfigureAwait(false);
+		await Task.WhenAny(s.AsTask(), b).ConfigureAwait(false);
 		if (b.IsCompleted) // Assuming it was bufferWait that completed.
 		{
 			await tokenSource.CancelAsync().ConfigureAwait(false);
 			return await b.ConfigureAwait(false);
 		}
 
-		// Await the source task to check if it completed and get its result
-		// This prevents a tight loop when the source is closed
-		await sTask.ConfigureAwait(false);
-		// Check if buffer completed while we were waiting (e.g., timeout forced a batch)
-		// If so, return immediately without trying to pipe more items
-		if (b.IsCompleted)
-			return await b.ConfigureAwait(false);
-
 		TryPipeItems(false);
 
 		if (b.IsCompleted || token.IsCancellationRequested)