fix: remove unused code and fix remaining lint findings

- Remove unused grpcClient var and client import (root.go)
- Remove unused longVal/boolVal helpers (jni_caller.go)
- Use tagged switch on clientID (store.go, QF1002)

Author: xaionaro@dx.center

cmd/jnicli/jni_caller.go

@@ -223,12 +223,3 @@ func intVal(v int32) *pb.JValue {
 	return &pb.JValue{Value: &pb.JValue_I{I: v}}
 }
 
-// longVal is a shorthand for creating a JValue with a long.
-func longVal(v int64) *pb.JValue {
-	return &pb.JValue{Value: &pb.JValue_J{J: v}}
-}
-
-// boolVal is a shorthand for creating a JValue with a boolean.
-func boolVal(v bool) *pb.JValue {
-	return &pb.JValue{Value: &pb.JValue_Z{Z: v}}
-}

cmd/jnicli/root.go

@@ -9,7 +9,6 @@ import (
 	"time"
 
 	"github.com/spf13/cobra"
-	"github.com/AndroidGoLab/jni-proxy/grpc/client"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/credentials"
 )
@@ -26,7 +25,6 @@ var (
 )
 
 var grpcConn *grpc.ClientConn
-var grpcClient *client.Client
 
 var rootCmd = &cobra.Command{
 	Use:   "jnicli",
@@ -68,7 +66,6 @@ var rootCmd = &cobra.Command{
 			return fmt.Errorf("connect to %s: %w", flagAddr, err)
 		}
 		grpcConn = conn
-		grpcClient = client.NewClient(conn)
 		return nil
 	},
 	PersistentPostRunE: func(cmd *cobra.Command, args []string) error {

grpc/server/acl/store.go

@@ -198,8 +198,8 @@ func (s *Store) ListGrants(clientID string) ([]GrantInfo, error) {
 		rows *sql.Rows
 		err  error
 	)
-	switch {
-	case clientID == "":
+	switch clientID {
+	case "":
 		rows, err = s.db.Query(`SELECT client_id, method_pattern, granted_at, granted_by FROM grants`)
 	default:
 		rows, err = s.db.Query(