The timesheet assistant now gives clearer guidance when setup issues prevent activity tracking, including distinguishing connection problems from CORS configuration issues and warning when the browser extension is missing or inactive. It also improves suggestion quality by showing real record names, preserving deleted Odoo events properly, and selecting more relevant projects for calendar-based timesheets.

Forward-Port-Of: odoo/enterprise#121939
Forward-Port-Of: odoo/enterprise#115859

The Courses menu is no longer hidden when Course Allocation is enabled in a restaurant point of sale. This makes course setup and management accessible to the people who need it, and the added help text guides users when creating courses.

Before this commit:
=======================
The Courses menu was always hidden because it was restricted
to `base.group_no_one`, making course management inaccessible
even when Course Allocation was enabled in a restaurant PoS.

After this commit
======================
The Courses menu now always visible.
A help message is also added to the Courses action to guide users when creating
courses.

Task-6317914

Forward-Port-Of: odoo/odoo#274300
Forward-Port-Of: odoo/odoo#271308

PDF reports can now be converted into images before printing, which makes them compatible with ePOS printers. This helps businesses print documents like labels on devices such as the Epson TM-L100.

We now use wkhtmltoimage to render pdf reports as
images in order to print them using an ePOS printer.

This is useful to print labels using an Epson TM-L100 for example.