Permission rationale draft
Future Messenger permissions
- pages_show_list: to let a signed-in Page admin choose an eligible Page they manage during a future Meta Login flow.
- pages_manage_metadata: to support approved webhook subscription and Page connection status after owner-approved implementation.
- pages_messaging: to receive and support Messenger conversation workflows after App Review and explicit enablement.
- business_management: deferred unless a later Meta requirement proves it is necessary.