You are in The Observatory.
Ground you have walked is named. The rest is drawn but unnamed — it is waiting, not missing, and nothing is required of you to find it.
Every realm is named here, and its rooms fold open beneath it. The mark beside a name says which ground you have already walked.
Every door stays where you left it. Esc folds the map.
A typescript function named 'getFieldNameFromChild', read from its card title on the library shelf. Atoms: get, field, name, from, child. Molecules: field-name, from-child.