The supervisor memory review actions — PUT **************** (EDIT_NOTES) corrects a live card's topic, fact and expiry (null clears it): a version of the old words kept, last edited by the reader, the card re-keyed (409 TOPIC_TAKEN on another live card's topic; an expired card holding it is purged), links, label and kind untouched; POST …/{noteId}/relabel (EDIT_NOTES) narrows a note's label: the sensitivity only rises (400 LABEL_WIDENS), never above the reader's effe...