tool runner: mesh/stream.publish says an event on the calling bundle's own bound stream (A-42)

Builds: design 42 zfs-owns-zfs §25, §24, lead answer A-42

node-tools/internal/runtime/busstate.go

@@ -21,7 +21,7 @@ const (
 // callFamilies are the methods each capability stands for, the ones BusState and BusStateWatch answer.
 var callFamilies = map[string][]string{
 	CapBusStateCalls: {buscalls.ObjectsPut, buscalls.ObjectsGet, buscalls.ObjectsList, buscalls.ObjectsDelete, buscalls.ObjectsInfo,
-		buscalls.ObjectsWatch, buscalls.StreamRead, buscalls.StreamFill, buscalls.WorkQueueSize, buscalls.WorkQueueDead},
+		buscalls.ObjectsWatch, buscalls.StreamRead, buscalls.StreamFill, buscalls.StreamPublish, buscalls.WorkQueueSize, buscalls.WorkQueueDead},
 	CapLedgerCalls: {buscalls.LedgerApply, buscalls.LedgerGet, buscalls.LedgerHistory, buscalls.LedgerWatch, buscalls.LedgerQuery,
 		buscalls.LedgerRebuild, buscalls.LedgerReindex, buscalls.LedgerSnapshot, buscalls.LedgerLag},
 }
@@ -85,6 +85,11 @@ func (b *moduleBus) BusState(method string, params json.RawMessage) (json.RawMes
 		if err = decode(method, params, &r); err == nil {
 			answer, err = conn.StreamFill(b.module, r)
 		}
+	case buscalls.StreamPublish:
+		var r buscalls.StreamPublishRequest
+		if err = decode(method, params, &r); err == nil {
+			answer, err = conn.StreamPublish(b.module, r)
+		}
 	case buscalls.WorkQueueSize:
 		var r buscalls.WorkQueueRequest
 		if err = decode(method, params, &r); err == nil {