feat: rename repr to expr

internal/registry/codec.go

@@ -8,7 +8,7 @@ import (
 )
 
 type Codec interface {
-	codec.Codec[Repr]
+	codec.Codec[Expr]
 
 	InType() string
 }
@@ -18,16 +18,16 @@ type convertedCodec[T any] struct {
 	inType string
 }
 
-func (c convertedCodec[T]) Decode(s string) (Repr, error) {
+func (c convertedCodec[T]) Decode(s string) (Expr, error) {
 	t, err := c.codec.Decode(s)
 	if err != nil {
 		return nil, err
 	}
 
-	return NewRepr(c.inType, t), nil
+	return NewExpr(c.inType, t), nil
 }
 
-func (c convertedCodec[T]) Encode(r Repr) (string, error) {
+func (c convertedCodec[T]) Encode(r Expr) (string, error) {
 	t, ok := r.Data().(T)
 	if !ok {
 		dataType := reflect.TypeOf(r.Data())