feat(agent): add metadata to stream

agent/internal/client/commander.go

@@ -13,26 +13,30 @@ import (
 	"golang.org/x/sync/errgroup"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/credentials"
+	"google.golang.org/grpc/metadata"
 )
 
 type CommanderClient struct {
 	cmder *commander.Commander
 	wg    *sync.WaitGroup
+	id    string
 }
 
 func New(
 	cmder *commander.Commander,
 	wg *sync.WaitGroup,
+	id string,
 ) CommanderClient {
-	return CommanderClient{cmder, wg}
+	return CommanderClient{cmder, wg, id}
 }
+
 func (self *CommanderClient) HandleCommands(ctx context.Context, srvAddr string, tc credentials.TransportCredentials) error {
 	cli, err := grpc.NewClient(srvAddr, grpc.WithTransportCredentials(tc))
 	if err != nil {
 		return fmt.Errorf("Failed to connect to gRPC: %w", err)
 	}
 	ccli := proto.NewCommanderClient(cli)
-	bidi, err := ccli.Stream(ctx)
+	bidi, err := ccli.Stream(metadata.NewOutgoingContext(ctx, metadata.MD{"agentid": []string{self.id}}))
 	if err != nil {
 		return err
 	}
@@ -56,7 +60,6 @@ func (self *CommanderClient) recv(bidi grpc.BidiStreamingClient[proto.FinishedCo
 			}
 			self.wg.Go(func() {
 				func() error {
-
 					fc, err := self.cmder.Execute(msg)
 					if err != nil {
 						return err