You built this. You maintain it. Everyone in the house depends on it and nobody else understands it. If you were unavailable for a month — or permanently — could the people who live with your lab get their photos back, keep the heating on, and know what to switch off? Answer these and take away a letter they can actually follow.
The honest test is not whether this document exists — it is whether someone who has never used a terminal can follow it while upset. Read it out loud to the person it is for. A Peira Labs field tool · peira.dev.