- Replace manual golangci-lint v2.1.6 installation (built with Go 1.24) - Use official golangci/golangci-lint-action@v6 GitHub Action - Set version to v2.6.0 which supports Go 1.25+ - Action automatically handles Go version compatibility Fixes CI error: 'the Go language version (go1.24) used to build golangci-lint is lower than the targeted Go version (1.25.3)'