I need a custom, enterprise-grade Point-of-Sale platform built from the ground up for a hybrid operation that combines an online store with a busy restaurant and takeaway counter. The same system must let us ring up tables, process click-and-collect orders originating from the webshop, and keep every sale, stock movement, and staff permission in one secure database. Core modules I expect include end-to-end order tracking, and a flexible loyalty engine that works both in-house and online. A PDF outlining the full feature list is attached—please treat it as the definitive scope. Role-based access has to be iron-clad: admin, manager, cashier, and waiter each need tailored dashboards with an audit trail on every action. Tech stack is Django-React-Postgre, yet the final solution must be cloud-ready, offline-tolerant, responsive on Android or iPad terminals, and easily extended through REST or GraphQL APIs. Prior experience with payment gateway integration, fiscal printers, and kitchen display screens will be highly valued. Propose a realistic timeline and milestone breakdown with your approach to architecture.