This pull request restructures Odoo accounting so invoices, receipts, and journal entries use one shared process. It should make accounting records easier to edit consistently, improve reporting on drafts, and reduce duplicated business logic, while also including a few related fixes in HR, website sales, and web forms.

Description of the issue/feature this PR addresses:

Current behavior before PR:

Desired behavior after PR is merged:




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This update aligns Enterprise accounting features with a major accounting data model cleanup, merging invoices, vouchers, and journal entries into a simpler underlying structure. It improves maintainability and consistency across accounting workflows, with broad impact on invoice handling, assets, reporting, and related payment processes.