fix(cron): publish agent response for deliver=false cron tasks

ProcessDirectWithChannel returns the LLM response but does not publish
it via MessageBus (only the Run() inbound loop does that). ExecuteJob
was discarding the response with '_ = response', causing deliver=false
cron task results to never reach the target channel.

Now publish the response explicitly, matching the deliver=true and
command execution paths.

pkg/tools/cron.go

@@ -337,7 +337,16 @@ func (t *CronTool) ExecuteJob(ctx context.Context, job *cron.CronJob) string {
 		return fmt.Sprintf("Error: %v", err)
 	}
 
-	// Response is automatically sent via MessageBus by AgentLoop
-	_ = response // Will be sent by AgentLoop
+	// Send agent response to channel (ProcessDirectWithChannel does not
+	// publish on its own — only the Run() inbound loop does that).
+	if response != "" {
+		pubCtx, pubCancel := context.WithTimeout(context.Background(), 5*time.Second)
+		defer pubCancel()
+		t.msgBus.PublishOutbound(pubCtx, bus.OutboundMessage{
+			Channel: channel,
+			ChatID:  chatID,
+			Content: response,
+		})
+	}
 	return "ok"
 }