updates

agent/internal/grpc/client.go

@@ -102,3 +102,9 @@ func (c *Client) UploadGeneratedKey(serverID, agentToken, publicKey, label strin
 	}
 	return resp.KeyId, nil
 }
+
+// CommandStream opens a long-lived bidirectional stream for server-pushed commands.
+// The caller controls the stream lifetime via ctx.
+func (c *Client) CommandStream(ctx context.Context) (pb.KeyManager_CommandStreamClient, error) {
+	return c.client.CommandStream(ctx)
+}