Migrate Notarius to credential lists

internal/adapters/notarius/fake.go

@@ -1,6 +1,10 @@
 package notarius
 
-import "context"
+import (
+	"context"
+
+	configkit "gitea.maximumdirect.net/eric/ConfigKit"
+)
 
 // FakeRunner is a configurable in-memory runner for stage tests.
 type FakeRunner struct {
@@ -15,6 +19,7 @@ func (f *FakeRunner) Run(ctx context.Context, req RunRequest) (RunResult, error)
 		return RunResult{}, err
 	}
 	copyRequest := req
+	copyRequest.Credentials = append([]configkit.Secret(nil), req.Credentials...)
 	if req.ConfigProfile != nil {
 		profile := *req.ConfigProfile
 		copyRequest.ConfigProfile = &profile