Part 2: The ESP32 That Saves the World
Part 1 built the workstation. Part 2 answers the next question: how do you get it onto an SD card without a working computer?
A $7 ESP32 with a touchscreen and an SD card slot stores the entire workstation image in its 4 MB flash. Insert a blank card, tap the screen, and walk away with a bootable survival system. No laptop, no internet, no infrastructure required.
Then the device becomes more than a flasher. A home screen, a file browser, a notes app, a survival reference guide — a pocket-sized toolkit that runs on a solar panel and a USB cable.