Let a module read its own streams back by a batch direct get, as it reads its log, so its tools can answer what the stream holds (a build step's whole failure output)

node-tools/internal/launch/event_answer_test.go

@@ -38,6 +38,7 @@ func (b *subscribing) Publish(json.RawMessage) error                          {
 func (b *subscribing) Ask(json.RawMessage) (json.RawMessage, error)           { return nil, nil }
 func (b *subscribing) State(string, json.RawMessage) (json.RawMessage, error) { return nil, nil }
 func (b *subscribing) Log(string, json.RawMessage) (json.RawMessage, error)   { return nil, nil }
+func (b *subscribing) StreamRead(json.RawMessage) (json.RawMessage, error)    { return nil, nil }
 func (b *subscribing) Watch(json.RawMessage, func(json.RawMessage) error) (func(), error) {
 	return func() {}, nil
 }

node-tools/internal/launch/launch.go

@@ -80,6 +80,9 @@ type Bus interface {
 	Watch(params json.RawMessage, deliver func(change json.RawMessage) error) (stop func(), err error)
 	// Log answers a bundle's `append`, `read`, `last` and `info` on its module's log (novox/hq ADR 0297).
 	Log(verb string, params json.RawMessage) (json.RawMessage, error)
+	// StreamRead answers a bundle's `read` of one of its module's own streams (novox/hq ADR 0363): {stream, subject,
+	// from, limit}, as a log's read.
+	StreamRead(params json.RawMessage) (json.RawMessage, error)
 	// Seat answers a bundle's seat traffic (novox/hq ADR 0259 §3): `publish`, `prove` and `record` at once;
 	// `take` and `answer` bind once and hand each message or proof on through handOn, to whichever child
 	// of the module asked last — a restarted child asks again as its code runs again.
@@ -333,6 +336,11 @@ func Start(module, entry string, env []string, mesh Bus, logf func(string, ...an
 							if answered, err = mesh.Log(strings.TrimPrefix(m.Method, "mesh/log."), m.Params); err == nil {
 								result = answered
 							}
+						case "mesh/stream.read":
+							var answered json.RawMessage
+							if answered, err = mesh.StreamRead(m.Params); err == nil {
+								result = answered
+							}
 						case "mesh/provision.get":
 							var answered json.RawMessage
 							if answered, err = mesh.Provision("get", m.Params); err == nil {