dotnet-io-pipelines High-performance I/O patterns using . Covers , , backpressure management, protocol parser implementation, and Kestrel integration. Pipelines solve the classic problems of buffer management, incomplete reads, and memory copying that plague traditional stream-based network code. Out of scope: Async/await fundamentals and patterns -- see [skill:dotnet-csharp-async-patterns]. Benchmarking methodology and micro-optimization -- see [skill:dotnet-performance-patterns]. File-based I/O (FileStream, RandomAccess, MemoryMappedFile) -- see [skill:dotnet-file-io]. Cross-references: [sk…