Internationalization of labels/options with WPML

https://wpml.org/wpml-hook/wpml_register_single_string/

Requires: "WPML String Translation" module

Example:

$value = 'Movie';
do_action( 'wpml_register_single_string', 'my-text-domain', 'Singular Label', $value );

Can we fetch our registered settings, iterate over and push that through to this hook, and have it work, without having to also drop this action throughout the rest of our codebase? Would allow for a compatibility file that we load as needed.

Or, do we just need to run this upon save functions? Is there an unregister equivalent?

Start by reviewing how registered settings are stored and how the save functions are reached, then read the WPML String Translation registration-hook documentation linked in the issue. Compare registering strings during setup with registering them on save, and determine whether WPML provides an unregister operation. Done means the integration approach and compatibility-file scope are decided without requiring scattered hooks throughout the codebase.