Mail activity forms are easier to use with a keyboard, including tab access to footer actions and Enter support for completing activities from list views. This improves accessibility and speeds up routine activity handling for users who rely on keyboard navigation.

**PURPOSE**

Improve some mail activity issues regarding keyboard navigation through forms.

**SPCIFICATION**

- When creating an activity using the form view, allowing user for the form and
  given access for TAB key to the four buttons at the footer.
- When done an activity using the record list view, allowing user ENTER key
  support on "Done" or "Done and Schedule Next" button to post feedback and
  mark the activity as done.

**Task**-2528109

Belgian payroll add-ons for canteen, December pay, holiday pay recovery, report measures, and group insurance were merged into the main Belgian payroll module. Large payroll reports such as tax sheets and individual accounts are now generated in the background one by one, reducing the risk of memory errors or request timeouts for companies processing many documents.

The sales-related enterprise apps were updated to stay compatible with recent changes in the core Odoo platform. This helps rental, field service, stock rental, and timesheet invoicing flows continue working smoothly after the underlying community updates.

COM PR: https://github.com/odoo/odoo/pull/71677

The Point of Sale customer list now combines loyalty points and outstanding amounts into one Balance column. This saves screen space and only shows values when there is a non-zero balance, making the list easier for cashiers to scan.

In this PR we simplify the interface of the POS app.

task-2669747