A focused, reliable Point of Sale core that provides the admin order workflow, product/cart handling, payment hooks and receipt templates. This package is the core dependency: Delivery, Takeaway, Dine‑in and Waiter extensions extend this core and will not function without it. Install the POS core first, then optionally add Delivery and/or Takeaway and/or Dine‑in and/or Waiter. Includes admin UI for creating orders, managing carts, and printing receipts. Compatibility/Notes: Required base for the other AVi‑SaaS extensions. Use POS core alone for simple counter operations, or combine with Delivery/Takeaway/Dine‑in/Waiter for full feature sets.