refactor: convert CLI methods to use pointer receivers

Updated all CLI method receivers to use pointer semantics (*CLI)
instead of value (CLI), ensuring consistent behavior across command
setup functions and reducing potential for unintentional value copying.

Author: kersten

pkg/cli/cli.go

@@ -472,6 +472,13 @@ func (c *CLI) Run() error {
 }
 
 // Command returns the underlying root command.
-func (c *CLI) Command() *cobra.Command {
+//
+// Deprecated: Use (c *CLI).CommandPtr() instead.
+func (c CLI) Command() *cobra.Command {
+	return (&c).CommandPtr()
+}
+
+// CommandPtr returns the underlying root command.
+func (c *CLI) CommandPtr() *cobra.Command {
 	return c.cmd
 }