On an assumed line producing 25,000,000 cells per year, a process anomaly lasting 1,800 s at one station leads to a quarantine population of 196,078 cells at lot level (production-day lot plus adjacent lot), 65,359 cells at shift-lot level, 2,159 cells with cell-to-tray mapping, 2,045 cells with per-cell timestamps, and 715 cells with per-cell process-parameter linkage. The main lever that narrows the quarantine scope by roughly 30× is not the cell ID itself but time-axis resolution (lot → tray); per-cell parameter linkage narrows it by a further ~2.9×. Under 10-year retention, storage cost is below 0.1% of the quarantine cost of a single anomaly at shift-lot level, so the real…