ingadhoc/account-financial-tools ? reverse-engineered prompt

Build me an Odoo 19 addon pack for accounting and finance helpers, similar to a set of small business tools that make common accounting tasks easier.

I want it organized as a collection of reusable modules for things like accounting UX improvements, analytic account usability, debt reporting, exchange difference handling on invoices, financial amount helpers, interest calculations, internal transfers, journal security, payment term surcharges, and a few stock accounting tweaks. The goal is to extend standard Odoo in practical ways for accountants, without changing the whole system, just adding useful features and cleaner workflows.

Please keep it consistent with normal Odoo module structure, make it installable as a set of addons, and include the usual setup files and documentation so it feels like a real project. If you need to check the latest Odoo 19 patterns or best practices, look up current docs online first.