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Colby McHenry
d1381e11f6
MediatR decouples a _mediator.Send(x)/.Publish(x) call from the Handle method that runs it, linked by the request/notification TYPE (the IRequestHandler<X,…> generic), usually across files in a Clean Architecture layout — so flows dead-end at the mediator call and the agent reads to find the handler. mediatrDispatchEdges bridges each dispatch -> the matching handler's Handle. Same two-pass, type-keyed shape as the Spring synthesizer, with two C#-specific twists found by probing: - C# method nodes carry NO signature (csharp.ts defines no getSignature), so Pass 1 reads the request type from the handler CLASS base-list source (`: IRequestHandler<X,…>` first generic arg) and binds the class's Handle. - The dominant .NET idiom is VARIABLE-passed, not inline `Send(new X)` — eShop has zero genuine inline MediatR sends. So Pass 2 resolves the sent type from the argument three ways within the enclosing method: inline `new X(…)`, a local `var v = new X(…)` (backward scan), or a parameter/local declared `X v`. Two precision gates: the receiver must be mediator-ish (mediator/sender/ publisher — excludes MAUI MessagingCenter.Send, HttpClient.Send) AND the resolved type must have a handler (so a same-named non-request DTO is never bridged). Handles the IdentifiedCommand<T,R> wrapper and void IRequestHandler<T>. Surfaces as `dynamic: mediatr dispatch` via the generic synth-edge fallback. Validated 100% precision on two grep-confirmed repos: jasontaylordev/ CleanArchitecture (small, 9 edges, inline + param forms) and dotnet/eShop (medium, 9 edges, 0 false positives, variable-passed + IdentifiedCommand + the CancelOrderCommand DTO-collision correctly avoided); 0 on the Newtonsoft.Json control. Node-stable (pure edge synth). Suite 1619 green. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>