This update standardizes and reduces sample data used in Odoo demonstrations, keeping one clear example per business use case. It also updates related tests so the refreshed demo records remain reliable across accounting, CRM, delivery, events, expenses, manufacturing, and other apps.

Description of the issue/feature this PR addresses:

Current behavior before PR:

Desired behavior after PR is merged:




--
I confirm I have signed the CLA and read the PR guidelines at www.odoo.com/submit-pr

Demo product data has been standardized and reduced so each business scenario uses clearer, more consistent examples. This makes sample databases easier to understand and keeps related accounting, delivery, manufacturing, marketing, point of sale, and project demos aligned with updated test coverage.