dotnet-realtime-communication Real-time communication patterns for .NET applications. Compares SignalR (full-duplex over WebSockets with automatic fallback), Server-Sent Events (SSE, built-in to ASP.NET Core in .NET 10), JSON-RPC 2.0 (structured request-response over any transport), and gRPC streaming (high-performance binary streaming). Provides decision guidance for choosing the right protocol based on requirements. Out of scope: HTTP client factory patterns and resilience pipelines -- see [skill:dotnet-http-client] and [skill:dotnet-resilience]. Native AOT architecture and trimming strateg…