Fixed Log.characters resolver not using dataloader

cmd/rpdata-graphiql/main.go

@@ -28,7 +28,7 @@ func main() {
 	}
 	log.Println("Updated characters on", n, "logs")
 
-	schema, err := graphql.ParseSchema(schema.String(), &resolver.RootResolver{}, graphql.MaxParallelism(32))
+	schema, err := graphql.ParseSchema(schema.String(), &resolver.RootResolver{}, graphql.MaxParallelism(48))
 	if err != nil {
 		log.Fatalln("Failed to parse schema:", err)
 	}

resolver/log.go

@@ -9,7 +9,6 @@ import (
 	"git.aiterp.net/rpdata/api/model/change"
 
 	"git.aiterp.net/rpdata/api/internal/session"
-	"git.aiterp.net/rpdata/api/model/character"
 	"git.aiterp.net/rpdata/api/model/log"
 )
 
@@ -283,7 +282,12 @@ func (r *LogResolver) Open() bool {
 
 // Characters resolves Log.characters
 func (r *LogResolver) Characters(ctx context.Context) ([]*CharacterResolver, error) {
-	chars, err := character.ListIDs(r.L.CharacterIDs...)
+	loader := loader.FromContext(ctx)
+	if loader == nil {
+		return nil, errors.New("no loader")
+	}
+
+	chars, err := loader.Characters("id", r.L.CharacterIDs...)
 	if err != nil {
 		return nil, err
 	}