- Add phone_number_id and display_phone fields to create/edit form
(were never shown or saved despite existing in the DB)
- Add phone_number_id and display_phone to CompanyRepository::save()
- New company form shows "Copiar configuración de empresa" dropdown:
selecting an existing company pre-fills api_base_url, api_key,
bot_type, config_json, etc. so admins only need to change
the name and phone_number_id
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
