The attachment preview and document extraction areas now use a clearer internal name for the main message attachment. This supports consistency with the wider platform and helps reduce future maintenance issues without changing everyday user workflows.

*=account_accountant

Rename mainAttachment to message_main_attachment_id

Community PR: https://github.com/odoo/odoo/pull/205493

task-4675790

The WhatsApp module now uses a clearer, standard field name for referencing parent messages. This is a small internal cleanup that improves consistency and helps keep related WhatsApp features easier to maintain.

Rename parentMessage to parent_id.

Community PR: https://github.com/odoo/odoo/pull/205529

task-4675783

Social media communications for events with multiple time slots are now sent once for the overall event instead of being repeated for each slot. This reduces unnecessary duplicate posts and keeps event promotion clearer for audiences.

For multi slots events, on the contrary of the current multi slots events mailing system, the social communications still need to be send once for the whole event, not for every slots. i.e. there is no need to send a social post before every exposition tour.

Limit the social post communication once for the event even if multi slots.

Task-4307566