its not something I can easily type into the console on the Web IDE
No, I'm suggesting that you'd create something like a Web Bluetooth website to handle it.
Storage only handles about 40kB total on nRF52s so yes, if you want that kind of thing built in you're probably better off building it into a custom firmware.
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
No, I'm suggesting that you'd create something like a Web Bluetooth website to handle it.
Storage
only handles about 40kB total on nRF52s so yes, if you want that kind of thing built in you're probably better off building it into a custom firmware.