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Highlights include configurable menus, specials, cart/checkout, taxes, customer accounts with email 2FA, newsletters, analytics, refunds, PDF/CSV exports, Square/Mailgun adapters, and optional MySQL migration. See README.md for setup and production configuration. Verified PHP/JavaScript syntax, responsive layouts, registration, 2FA, checkout, dashboard workflows, settings persistence, and PDF generation. Real Square, Mailgun, and MySQL connections require credentials/server access. Square implementation follows the official Payments API and Refunds API.