Refactor: replace PipeReaderBinaryInput with SegmentBufferReader
- Remove PipeReaderBinaryInput and all related code.
- Add SegmentBufferReader and SegmentBufferReaderInput for efficient, thread-safe chunked streaming deserialization.
- Update AcBinaryDeserializer and AcBinaryHubProtocol to use the new buffer for async segment protocol, improving state management and background deserialization.
- Enhance chunked protocol handling: skip re-presented chunk start frames, track consumed chunk frame bytes, and improve logging.
- Update test infrastructure to support async segment protocol and add AsyncSegmentPipeTransportWriter for realistic testing.
- Update settings.local.json to reflect new build/test commands and remove obsolete files.
- Improves performance, reliability, and testability of chunked SignalR streaming.
Loretta
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