Making permanent progress a data rule.

Sleep Map connects a kept sleep routine with discovering a real place. The product is meant to reward returning without making a missed night undo earlier effort.

That promise needs to survive more than the success animation. It has to hold when the next night fails and when the app reloads its saved state.

Claimed territory is stored as append-only progress. A streak can reset without removing previously claimed cells. Keeping those concepts separate in the data model makes the gentle behavior a rule the app can preserve.

The claim engine has tests around the frontier and already-claimed territory. These are checks of the underlying behavior, not evidence that the app improves sleep or habit retention.

The release map replaced an earlier globe because tonight’s place needed to be legible. The app uses prepared geographic cells and adjacency data to support territory that grows outward from home.

Prepared geography shifts work out of the interface and into content preparation and validation. That is a useful tradeoff for this product, but it also means geographic coverage is a release constraint: the initial release covers the United States.