T-6: the tool runner reads a sent object by its reference, under the bus state capability

mesh/objects.sent-get reads a sender's sent store only; refused: a state's objects, a reference that is none, an object over a bundle's channel.

Builds: design 47 G §347, §59, §462

Claude-Session: https://claude.ai/code/session_01JG73KEq4zoDfM9WtYpcQgZ

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.ObjectsSentGet, buscalls.StreamRead, buscalls.StreamFill, buscalls.WorkQueueSize, buscalls.WorkQueueDead},
 	CapLedgerCalls: {buscalls.LedgerApply, buscalls.LedgerGet, buscalls.LedgerHistory, buscalls.LedgerWatch, buscalls.LedgerQuery,
 		buscalls.LedgerRebuild, buscalls.LedgerReindex, buscalls.LedgerSnapshot, buscalls.LedgerLag},
 }
@@ -65,6 +65,14 @@ func (b *moduleBus) BusState(method string, params json.RawMessage) (json.RawMes
 			err = conn.ObjectsDelete(b.module, r)
 			answer = buscalls.Done{}
 		}
+	case buscalls.ObjectsSentGet:
+		var r buscalls.ObjectsSentGetRequest
+		if err = decode(method, params, &r); err == nil {
+			var got *buscalls.ObjectData
+			if got, err = conn.SentGet(r); err == nil {
+				answer = got
+			}
+		}
 	case buscalls.ObjectsList:
 		var r buscalls.ObjectsRequest
 		if err = decode(method, params, &r); err == nil {