Changed commands merge from ?? (replace) to array_merge (extend) so that
per-type overrides for menu/inicio/volver are applied without losing the
global salir, exit, informes, info commands.
Also updated DB config per_type:
- Type 1 (subir info): menu/inicio/volver → recibir_info → submenu_subir
- Type 2 (descargar): menu/inicio/volver → descargar_informes → submenu_informes
- Type 3 (admin): menu → show_main_menu (inherits global)
Each category now lands on its own menu from the first message.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>