go1.24: fix lint, unit and system tests

- development env: base on debian trixie with go1.24
- lint: run with default config
- fix lint errors
- fix unit tests
- fix system test

database/goleveldb/database.go

@@ -51,8 +51,8 @@ func RecoverDB(path string) error {
 		return err
 	}
 
-	db.Close()
-	stor.Close()
+	_ = db.Close()
+	_ = stor.Close()
 
 	return nil
 }