Writing to the Backing Field
DShop.Common stamps a server-generated Guid into an immutable command by reflecting into its compiler-generated backing field - immutability the type system only pretends to enforce.
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Hand-Rolled MediatR in Thirty Lines
DShop.Common ships its own in-process command and query dispatch - marker interfaces, a handler triple, and one dynamic double-dispatch standing in for a library.
Command or Event, Enforced by Convention
In DShop.Common a command and an event are published by identical code - the difference between them is a marker interface and a promise nothing enforces.
The Class Name Is the Registry Key
Above raw resolution sits a convention layer - an abstract endpoint base class that derives its Key Vault lookup key from its own type name, a template method separating the call from the interpretation, and a generic proxy that routes by name across every endpoint the DI container knows. Part 4 of Service Discovery Without a Service Mesh.