I DONT ACCEPT PRICE INCREASE AFTER BIDDING: READ CARREFFULLY! THANKS I am planning a full upgrade of our production instance from Odoo 15 to Odoo 19. Beyond bringing the core system up to date, I also need one in-house custom module to be migrated so that existing workflows, views, reports and automated actions behave exactly as they do now—or better—once we switch versions. Small file which is available. • Spin up a clean Odoo 19 environment, migrate the database and dependencies. • Rewrite or adapt customised modules so they meet Odoo 19 API standards. • Validate that every customised view, report, scheduled task and external integration functions correctly. • Provide a hand-off package—source code, migration scripts and a short runbook—so I can reproduce the upgrade in production with minimal downtime. If you have proven experience moving customised codebases across major Odoo versions and can demonstrate a solid test methodology, I would like to hear how you would tackle this, the timeline you foresee and any prerequisites you need from my side.