The http-client edge of the transport-fault vocabulary: fold the library's exception type into Ecluse.Core.Fault at an adapter boundary.

Every HTTP-speaking adapter faces the same HttpException -- the npm registry client directly, and the AWS adapters through amazonka's transport-error channel -- so the classification lives once, here, rather than per adapter. The module sits beside Ecluse.Core.Fault as a leaf: it imports the client library, never any capability module, so the queue, the registry, and the advisory sync can all reach it without crossing one another.