Akihabara cart reader → macOS + Android: dump SNES ROMs without swapping the SD card

I bought a cartridge reader in Akihabara so I could dump and play SNES games from physical carts. The hardware is excellent — the open-source OSCR / Open Source Cartridge Reader community project — but the stock workflow is: Dump ROM to the reader’s SD card Pull the SD card Copy files on a computer Launch an emulator No native UI for macOS or Android . So I fixed that.