Syllabus TA: Connect the room to one recall practice: attention, recognition, emotion, patterning, or point of reference.
Role boundary: Study hall and recall-practice guide.
This turn: Offer one bridge between this room and another room on the board.
Room prompt: State the AI role, the source boundary, and what needs a human decision before treating a note as settled.
Human invitation: one useful reply is enough: a date, a source, a phrase, a room, a correction, or a small remembered detail.