handlers: replace fmt.Errorf with errors.New to satisfy vet

internal/bot/handlers.go

@@ -2,6 +2,7 @@ package bot
 
 import (
 	"database/sql"
+	"errors"
 	"fmt"
 	"time"
 
@@ -57,7 +58,7 @@ func (h *Handler) handleClockIn() error {
 		return err
 	}
 	if last != nil && last.EventType == "in" {
-		return fmt.Errorf(h.Translator.Get("already_clocked_in", "en"))
+		return errors.New(h.Translator.Get("already_clocked_in", "en"))
 	}
 	// Set default remote flag after first clock‑in.
 	if _, err := h.DB.GetSetting("remote_flag"); err != nil {
@@ -73,15 +74,15 @@ func (h *Handler) handleClockOut() error {
 		return err
 	}
 	if last == nil {
-		return fmt.Errorf(h.Translator.Get("error", "en"))
+		return errors.New(h.Translator.Get("error", "en"))
 	}
 	switch last.EventType {
 	case "in":
 		return h.DB.CreateEvent("out", time.Now().Unix(), "")
 	case "out":
-		return fmt.Errorf(h.Translator.Get("already_clocked_out", "en"))
+		return errors.New(h.Translator.Get("already_clocked_out", "en"))
 	default:
-		return fmt.Errorf(h.Translator.Get("error", "en"))
+		return errors.New(h.Translator.Get("error", "en"))
 	}
 }