Add extensions for Stream, HttpContent, HttpClient that make use of progress reporting

[Copilot]

• Replace FakeHttpMessageHandler with real HTTP requests to example.com
• Remove null progress test cases
• Only test string overloads; string overloads delegate to Uri overloads
• Use UriKind.RelativeOrAbsolute in all string-to-Uri conversions in HttpClientExtensions
• Inline HttpClient and URL directly into each test method
• Remove HttpContentSpecs.cs — covered by HttpClient tests via delegation
• Remove StreamSpecs.cs and HttpClientSpecs.cs; merge 2 most important stream tests + all HttpClient tests into new ExtensionSpecs.cs
• Fix CI failures: use https://github.com/Tyrrrz/Gress (returns Content-Length) and restore progress assertions
• Use ArrayPool<byte> and Random.Shared to fill stream test data
• Add using var to MemoryStream variables in ExtensionSpecs.cs
• Add .ConfigureAwait(false) to all async/awaits in all non-test files
• Fix File.Create to use FileStream with FileOptions.Asynchronous
• Reorder methods so callees appear before their callers in HttpClientExtensions.cs
• Use RentOwner from PowerKit in ExtensionSpecs.cs stream tests
• Add ArrayPool for buffer in StreamExtensions.cs with pattern matching
• Use pattern matching in StreamExtensions.cs while loops
• Add private TryGetEncoding extension on HttpContent in HttpContentExtensions.cs
• Update PowerKit to v1.0.0 and use ISpanOwner.Span syntax
• Add async/await to all string delegating overloads in HttpClientExtensions.cs
• Use PowerKit's CopyToStreamAsync with IProgress<double>? in HttpContentExtensions.cs, converting via ToDoubleBased()
• Fix build failures: exclude incompatible PowerKit v1.0.0 DirectoryExtensions.cs for older TFMs
• Fix test failures: investigate and fix progress reporting for HTTP download tests
• Investigate using PowerKit's Stream CopyToAsync in StreamExtensions.cs similarly

[Copilot]

Just as a heads up, I was blocked by some firewall rules while working on your feedback. Expand below for details.

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• example.com
  • Triggering command: /usr/share/dotnet/dotnet /usr/share/dotnet/dotnet exec --runtimeconfig /home/REDACTED/work/Gress/Gress/Gress.Tests/bin/Debug/net10.0/Gress.Tests.runtimeconfig.json --depsfile /home/REDACTED/work/Gress/Gress/Gress.Tests/bin/Debug/net10.0/Gress.Tests.deps.json /home/REDACTED/work/Gress/Gress/Gress.Tests/bin/Debug/net10.0/testhost.dll --port 36169 --endpoint 127.0.0.1:036169 --role client --parentprocessid 4329 --telemetryoptedin false (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

[Copilot]

Just as a heads up, I was blocked by some firewall rules while working on your feedback. Expand below for details.

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• av-build-tel-api-v1.avaloniaui.net
  • Triggering command: /usr/share/dotnet/dotnet dotnet exec --runtimeconfig /home/REDACTED/.nuget/packages/avalonia.buildservices/11.3.2/tools/netstandard2.0/runtimeconfig.json /home/REDACTED/.nuget/packages/avalonia.buildservices/11.3.2/tools/netstandard2.0/Avalonia.BuildServices.Collector.dll (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

[Tyrrrz]

@copilot update PolyShim to latest pre-release version and rebuild

[codecov]

Codecov Report

❌ Patch coverage is 88.76404% with 10 lines in your changes missing coverage. Please review.
✅ Project coverage is 89.66%. Comparing base (1d36b81) to head (6a95d2e).
⚠️ Report is 1 commits behind head on prime.

Files with missing lines	Patch %	Lines
Gress/Integration/HttpContentExtensions.cs	78.12%	5 Missing and 2 partials ⚠️
Gress/Integration/StreamExtensions.cs	87.50%	0 Missing and 2 partials ⚠️
Gress/Integration/HttpClientExtensions.cs	97.56%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##            prime      #28      +/-   ##
==========================================
- Coverage   90.10%   89.66%   -0.45%     
==========================================
  Files          10       13       +3     
  Lines         182      271      +89     
  Branches       18       23       +5     
==========================================
+ Hits          164      243      +79     
- Misses         13       18       +5     
- Partials        5       10       +5     

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[Copilot]

Pull request overview

Copilot reviewed 7 out of 7 changed files in this pull request and generated 6 comments.

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