I need a production-ready VPN application built for both iOS and Android with secure browsing as its primary purpose. The interface should feel classic and straightforward—think clean status indicators, a large connect button, and familiar toggle options rather than flashy graphics or motion effects. Protocol choice is still open. I’m happy to adopt whatever you believe will give the best mix of speed, stability, and encryption strength—OpenVPN, IKEv2/IPsec, WireGuard, or even a hybrid setup if that proves wiser. Your guidance here will be important. Key things I expect: • A single-tap connect/disconnect flow that works consistently on the latest iOS and Android releases. • Strong encryption and DNS/IP leak protection so users stay private at all times. • Smooth handling of network changes (e.g., moving between Wi-Fi and cellular). • App Store and Google Play-ready builds, signed and prepared for submission, with basic branding elements I’ll supply. • Source code and brief setup notes so I can maintain future updates internally. If you’ve shipped VPN clients before and can walk me through server requirements or optimizations, let me know. I’m looking to move quickly once we agree on the architecture.