I run Odoo 19 and the built-in Sales module is lagging behind the rest of the system. The goal is to bring every part of that module—models, views, business logic and reports—up to Odoo 19 standards so all Sales workflows function smoothly again. Scope • Update Python code to the current ORM and API conventions • Refactor XML views, menus and QWeb templates that throw warnings or break under the new framework • Ensure existing quotation flows, order confirmations and invoicing hooks keep their original business rules • Resolve any deprecations or security rule mismatches introduced by the core upgrade • Perform end-to-end testing inside my live Odoo 19 environment and supply a brief technical changelog Acceptance The upgraded module must install with no errors, pass standard Odoo tests, and let me create, confirm and invoice a sales order without manual work-arounds. Please base the work on standard Odoo tools only—Odoo ORM, Python 3, XML, QWeb—and keep external libraries to a minimum so future upgrades stay simple.