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:




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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.

This update fixes issues when users reorder list items using drag handles, especially when some optional fields are left empty. New list items are now placed in the expected position more reliably, reducing errors and improving consistency across screens such as sales, inventory, accounting, and point of sale.

Link to task: https://www.odoo.com/web#id=1853432&action=333&active_id=1251&model=project.task&view_type=form&menu_id=4720

A new contributor license agreement record was added for tanghulu0608. This supports project governance by documenting contributor permissions and helping keep contributions legally compliant.