Work that keeps going after you log off: big reviews, migrations, research sweeps. Start one with a sentence, watch progress live, get the report when it is done. Jobs run for hours and survive restarts.
Example from the product: review all 45 backend routers overnight. Heidi runs for hours, shows live progress, and the plan is in your inbox in the morning, with every step logged.
Durability is the point: tasks are persisted, restarts resume instead of restarting, and failures are visible in the attempt log.