Add local dev loop integration

src/Directory.Packages.props

@@ -3,9 +3,9 @@
     <ManagePackageVersionsCentrally>true</ManagePackageVersionsCentrally>
   </PropertyGroup>
   <ItemGroup>
-    <PackageVersion Include="Aspire.Hosting.AppHost" Version="13.1.2" />
-    <PackageVersion Include="Aspire.Hosting.PostgreSQL" Version="13.1.2" />
-    <PackageVersion Include="Aspire.Hosting" Version="13.1.2" />
+    <PackageVersion Include="Aspire.Hosting.AppHost" Version="13.4.6" />
+    <PackageVersion Include="Aspire.Hosting.PostgreSQL" Version="13.4.6" />
+    <PackageVersion Include="Aspire.Hosting" Version="13.4.6" />
     <PackageVersion Include="AWSSDK.SimpleNotificationService" Version="4.0.3.6" />
     <PackageVersion Include="AWSSDK.SQS" Version="4.0.3.5" />
     <PackageVersion Include="Azure.Identity" Version="1.13.2" />
@@ -28,7 +28,7 @@
     <PackageVersion Include="JsonSchema.Net" Version="7.3.4" />
     <PackageVersion Include="Marten" Version="8.37.0" />
     <PackageVersion Include="McMaster.Extensions.CommandLineUtils" Version="4.0.1" />
-    <PackageVersion Include="MessagePack" Version="2.5.301" />
+    <PackageVersion Include="MessagePack" Version="2.5.302" />
     <PackageVersion Include="Microsoft.Azure.Functions.Extensions" Version="1.1.0" />
     <PackageVersion Include="Microsoft.Azure.Functions.Worker.Core" Version="2.0.0" />
     <PackageVersion Include="Microsoft.Azure.Functions.Worker.Extensions.Abstractions" Version="1.1.0" />
@@ -137,7 +137,7 @@
     <PackageVersion Include="Microsoft.Extensions.DependencyInjection.Abstractions" Version="10.0.0" />
     <PackageVersion Include="Microsoft.Extensions.Hosting.Abstractions" Version="10.0.0" />
     <PackageVersion Include="Microsoft.Extensions.Http" Version="10.0.0" />
-    <PackageVersion Include="Microsoft.Extensions.Logging" Version="10.0.0" />
+    <PackageVersion Include="Microsoft.Extensions.Logging" Version="10.0.8" />
     <PackageVersion Include="Microsoft.Extensions.ObjectPool" Version="10.0.0" />
     <PackageVersion Include="Microsoft.Extensions.Options" Version="10.0.0" />
     <PackageVersion Include="Microsoft.Extensions.Primitives" Version="10.0.0" />

src/HotChocolate/Fusion/src/Fusion.Aspire/GatewayRecompositionWorker.cs

@@ -0,0 +1,100 @@
+using System.Threading.Channels;
+using Microsoft.Extensions.Logging;
+
+namespace HotChocolate.Fusion.Aspire;
+
+/// <summary>
+/// Schedules schema recomposition runs for a single gateway. Triggers that arrive while a run
+/// is already pending are coalesced into that run, and two runs for the same gateway never
+/// overlap.
+/// </summary>
+internal sealed class GatewayRecompositionWorker
+{
+    private readonly Channel<bool> _triggers = Channel.CreateBounded<bool>(
+        new BoundedChannelOptions(1)
+        {
+            FullMode = BoundedChannelFullMode.DropWrite
+        });
+    private readonly string _gatewayName;
+    private readonly Func<CancellationToken, Task> _recomposeAsync;
+    private readonly TimeSpan _debounceDelay;
+    private readonly TimeProvider _timeProvider;
+    private readonly ILogger _logger;
+
+    public GatewayRecompositionWorker(
+        string gatewayName,
+        Func<CancellationToken, Task> recomposeAsync,
+        TimeSpan debounceDelay,
+        TimeProvider timeProvider,
+        ILogger logger)
+    {
+        ArgumentException.ThrowIfNullOrEmpty(gatewayName);
+        ArgumentNullException.ThrowIfNull(recomposeAsync);
+        ArgumentOutOfRangeException.ThrowIfLessThan(debounceDelay, TimeSpan.Zero);
+        ArgumentNullException.ThrowIfNull(timeProvider);
+        ArgumentNullException.ThrowIfNull(logger);
+
+        _gatewayName = gatewayName;
+        _recomposeAsync = recomposeAsync;
+        _debounceDelay = debounceDelay;
+        _timeProvider = timeProvider;
+        _logger = logger;
+    }
+
+    /// <summary>
+    /// Requests a schema recomposition for the gateway. When a recomposition is already
+    /// pending, the request is absorbed by the pending run.
+    /// </summary>
+    public void TriggerRecomposition() => _triggers.Writer.TryWrite(true);
+
+    /// <summary>
+    /// Processes recomposition requests until the token signals shutdown. A failing
+    /// recomposition is logged and does not terminate the worker.
+    /// </summary>
+    public async Task RunAsync(CancellationToken stoppingToken)
+    {
+        try
+        {
+            while (await _triggers.Reader.WaitToReadAsync(stoppingToken))
+            {
+                _triggers.Reader.TryRead(out _);
+
+                if (_debounceDelay > TimeSpan.Zero)
+                {
+                    await Task.Delay(_debounceDelay, _timeProvider, stoppingToken);
+                }
+
+                // Requests that arrived while waiting are covered by the run that starts now.
+                _triggers.Reader.TryRead(out _);
+
+                try
+                {
+                    await _recomposeAsync(stoppingToken);
+                }
+                catch (OperationCanceledException) when (stoppingToken.IsCancellationRequested)
+                {
+                    return;
+                }
+                catch (Exception exception)
+                {
+                    _logger.LogError(
+                        exception,
+                        "Schema recomposition failed for {ResourceName}: {Error}",
+                        _gatewayName,
+                        exception.Message);
+                }
+            }
+        }
+        catch (OperationCanceledException) when (stoppingToken.IsCancellationRequested)
+        {
+            // The application is shutting down.
+        }
+        catch (Exception exception)
+        {
+            _logger.LogError(
+                exception,
+                "The schema recomposition worker for {ResourceName} stopped unexpectedly.",
+                _gatewayName);
+        }
+    }
+}

src/HotChocolate/Fusion/src/Fusion.Aspire/HotChocolate.Fusion.Aspire.csproj

@@ -14,7 +14,9 @@
   <ItemGroup>
     <PackageReference Include="Aspire.Hosting" />
     <PackageReference Include="MessagePack" />
-    <PackageReference Include="Microsoft.Extensions.Logging" />
+    <!-- Aspire.Hosting 13.4.x requires Microsoft.Extensions.Logging >= 10.0.8, above the net9.0 central pin. -->
+    <PackageReference Include="Microsoft.Extensions.Logging" VersionOverride="10.0.8" Condition="'$(TargetFramework)' == 'net9.0'" />
+    <PackageReference Include="Microsoft.Extensions.Logging" Condition="'$(TargetFramework)' != 'net9.0'" />
   </ItemGroup>
 
   <ItemGroup>