The Appointment app now supports checking whether calendar integrations are synchronized, helping the calendar controls work correctly. The appointment calendar header was also adjusted so sharing availability and synchronization buttons fit together better.

This commit adds the route for checking the synchronization status of calendar integration modules in order to fix the current QUnit tests.

related: odoo/odoo#150186
task-3570379

When an approval request is created, the person who owns the related record is automatically added as a follower. This helps ensure the owner stays informed and receives notifications about the approval process without manual setup.

When an approval request is created, the owner of the record is added as a follower of the approval request. This way, the owner will receive notifications about the approval request.

task-3672542