fix: address review feedback from CodeRabbit

- Remove -h shorthand on host flag to avoid panic from Cobra's
  built-in help flag conflict (cli/example_test.go)
- Handle error from defaults.Set instead of ignoring it (config.go)
- Preserve PersistentPreRunE in addition to PersistentPreRun so
  Init doesn't silently drop user hooks (cli.go)
- Add Unwrap() to statusWriter so http.Flusher/Hijacker pass
  through, fixing streaming and h2c support (requestlog.go)

Author: ravisuhag

cli/cli.go

@@ -53,16 +53,23 @@ func Init(rootCmd *cobra.Command, opts ...Option) {
 	rootCmd.SilenceUsage = true
 
 	// Inject shared output and prompter into command context.
-	existing := rootCmd.PersistentPreRun
-	rootCmd.PersistentPreRun = func(cmd *cobra.Command, args []string) {
+	// Preserve any existing PersistentPreRun or PersistentPreRunE hook.
+	existingRun := rootCmd.PersistentPreRun
+	existingRunE := rootCmd.PersistentPreRunE
+	rootCmd.PersistentPreRun = nil
+	rootCmd.PersistentPreRunE = func(cmd *cobra.Command, args []string) error {
 		ctx := context.WithValue(cmd.Context(), contextKey{}, &cliContext{
 			output:   printer.NewOutput(os.Stdout),
 			prompter: prompt.New(),
 		})
 		cmd.SetContext(ctx)
-		if existing != nil {
-			existing(cmd, args)
+		if existingRunE != nil {
+			return existingRunE(cmd, args)
 		}
+		if existingRun != nil {
+			existingRun(cmd, args)
+		}
+		return nil
 	}
 
 	// Wire commander features.

cli/example_test.go

@@ -11,7 +11,7 @@ func ExampleInit() {
 		Use:   "frontier",
 		Short: "identity management",
 	}
-	rootCmd.PersistentFlags().StringP("host", "h", "", "API server host")
+	rootCmd.PersistentFlags().String("host", "", "API server host")
 
 	listCmd := &cobra.Command{
 		Use:   "list",

config/config.go

@@ -96,8 +96,10 @@ func (l *Loader) Load(config any) error {
 		return err
 	}
 
-	// Apply default values before reading configuration
-	defaults.Set(config)
+	// Apply default values before reading configuration.
+	if err := defaults.Set(config); err != nil {
+		return fmt.Errorf("failed to set defaults: %w", err)
+	}
 
 	// Bind flags dynamically using reflection on `cmdx` tags if a flag set is provided
 	if l.flags != nil {

middleware/requestlog/requestlog.go

@@ -112,3 +112,9 @@ func (w *statusWriter) WriteHeader(code int) {
 	w.status = code
 	w.ResponseWriter.WriteHeader(code)
 }
+
+// Unwrap returns the underlying ResponseWriter, allowing the http package
+// to access optional interfaces (Flusher, Hijacker, etc.) through it.
+func (w *statusWriter) Unwrap() http.ResponseWriter {
+	return w.ResponseWriter
+}