Merge main into feat/47-G-join11: the tool runner's mesh/stream.publish (issue 1979)

The capability stream-publish is stated under mesh-sdk's word (buscalls.StreamPublishWord) and in the runtime artifact's states, so G's test that the stated words are the manifest's states holds; the publish uses G's exported JetStream.

Builds: design 47 G §545, §622; design 42 zfs-owns-zfs A-42, A-44

Claude-Session: https://claude.ai/code/session_01NcbgfGKaxw984XyAPfLm4h

node-tools/internal/runtime/busstate.go

@@ -29,12 +29,16 @@ const (
 	// CapApprovalMark says the runner honours the approval mark: its gate sits on every handler it serves (design 46
 	// 7-approval-mark §6, §20), so the grants part composes no deny of its modules' marked subjects.
 	CapApprovalMark = "approval-mark/1"
+	// CapStreamPublish is the call that says an event on the module's own bound stream (design 42 zfs-owns-zfs, A-44), the
+	// word mesh-sdk's buscalls names (§622).
+	CapStreamPublish = buscalls.StreamPublishWord
 )
 
 // 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},
+	CapStreamPublish: {buscalls.StreamPublish},
 	CapLedgerCalls: {buscalls.LedgerApply, buscalls.LedgerGet, buscalls.LedgerHistory, buscalls.LedgerWatch, buscalls.LedgerQuery,
 		buscalls.LedgerRebuild, buscalls.LedgerReindex, buscalls.LedgerSnapshot, buscalls.LedgerLag},
 	CapLedgerUpkeepCalls: {buscalls.LedgerFill, buscalls.LedgerRemove},
@@ -110,6 +114,11 @@ 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 {