ESP32 Live Gold and Currency Display (Wi-Fi + OLED Display + Button)

What is gold trading at in Turkey right now? No need to check your phone! The **ESP32** joins Wi-Fi, pulls **gram gold**, **US dollar** and **euro** prices in Turkish lira from a free, keyless JSON source and shows them on a **0.96 inch OLED**. Prices refresh every 60 seconds; the **button** flips pages and a long press refreshes right away. If the internet drops, the last values stay on screen with an `OFFLINE` badge.