Case Study — Production Ops Automation · a garment manufacturer

A threshold trigger in a distance field

Each dot is a simulated production node — fabric arrivals, sample approvals, deliveries. Time flows left. When a node drifts inside the look-ahead window, the system fires a reminder — before it crosses zero.
Scheduled — still far out
In window — reminder sent
Overdue — escalating
Resolved — date backfilled
days = (due − today).dt.days → warn = days.between(0, 3) → overdue = days < 0 from node_reminder.py — the entire trigger logic, three expressions
AHEAD_DAYS · wave radius3 d
Look-ahead window
ESCALATION · amplitude0.6
Overdue escalation
RESPONSE · damping0.5
Team response rate
PACE · wave speed4 d/s
Schedule pace
0reminders fired
0resolved after reminder
0escalated to management
0nodes in flight