fix(help): fix order of help output

Author: gi8lino

go.mod

@@ -5,7 +5,7 @@ go 1.24.2
 toolchain go1.24.3
 
 require (
-	github.com/containeroo/dynflags v0.1.0
+	github.com/containeroo/dynflags v0.1.1
 	github.com/containeroo/httputils v0.0.1
 	github.com/containeroo/resolver v0.0.2
 	github.com/spf13/pflag v1.0.6

go.sum

@@ -1,5 +1,5 @@
-github.com/containeroo/dynflags v0.1.0 h1:pWJx4rG3bznbtTDSaHQ9TpqRMPEmGX2e9D99zXP3Awg=
-github.com/containeroo/dynflags v0.1.0/go.mod h1:YmSfpL9trViFWdXOz+RUXQMTFiUBkcOeVajzoh+rMVw=
+github.com/containeroo/dynflags v0.1.1 h1:p6039AhBuKjfeylNwQwlQVsCEgufJDgFncrtCQmrjKE=
+github.com/containeroo/dynflags v0.1.1/go.mod h1:YmSfpL9trViFWdXOz+RUXQMTFiUBkcOeVajzoh+rMVw=
 github.com/containeroo/httputils v0.0.1 h1:W9SbW6nbmnGgaEOXRH5nY9ZwLarBo3+FLUCx6EtS2mc=
 github.com/containeroo/httputils v0.0.1/go.mod h1:TrmDptapH6SBe6CeHFWY2kxy63O/9ZWBWrLKpc2SFjI=
 github.com/containeroo/resolver v0.0.2 h1:xvTA1N0Nr1g37TNRt2aS3HwivhztLCC+wTgHsYccwjk=

internal/config/config.go

@@ -136,12 +136,16 @@ func setupDynamicFlags() *dynflags.DynFlags {
 // setupUsage sets the custom usage function.
 func setupUsage(fs *flag.FlagSet, df *dynflags.DynFlags) {
 	fs.Usage = func() {
-		fmt.Fprintf(fs.Output(), "Usage: %s [FLAGS] [DYNAMIC FLAGS..]\n", strings.ToLower(fs.Name())) // nolint:errcheck
+		out := fs.Output() // capture writer ONCE
 
-		fmt.Fprintln(fs.Output(), "\nGlobal Flags:") // nolint:errcheck
+		fmt.Fprintf(out, "Usage: %s [FLAGS] [DYNAMIC FLAGS..]\n", strings.ToLower(fs.Name())) // nolint:errcheck
+
+		fmt.Fprintln(out, "\nGlobal Flags:") // nolint:errcheck
+		fs.SetOutput(out)
 		fs.PrintDefaults()
 
-		fmt.Fprintln(fs.Output(), "\nDynamic Flags:") // nolint:errcheck
+		fmt.Fprintln(out, "\nDynamic Flags:") // nolint:errcheck
+		df.SetOutput(out)
 		df.PrintDefaults()
 	}
 }