refactor: make logger global and improve initialization

handlers/handlers.go

@@ -7,11 +7,13 @@ import (
 	"os"
 )
 
+var log *slog.Logger
+
 func init() {
-	handler := slog.NewJSONHandler(os.Stderr, &slog.HandlerOptions{
+	// it should print code line where call is occured; ai!
+	log = slog.New(slog.NewJSONHandler(os.Stderr, &slog.HandlerOptions{
 		Level: slog.LevelDebug,
-	})
-	slog = slog.New(handler)
+	}))
 }
 
 var roundWords = map[string]string{