Factory console: work orders for the operators

New "Work orders" section in the factory console (#work), derived from
the same simulated records as the rest of the page, one work order per
station and job:
- order stages: mastering, lacquer cutting, electroforming, stamper prep,
  test pressings, press run, packing, dispatch
- stamper changes (planned when a set nears its life, in progress during
  the change), fault clearing on a stopped press (maintenance)
- material lab: lab gate per compound lot, release test pressing, and the
  held lot's re-dry and retest (button starts it)
- audio QC: each sampled copy's listening check

Board: In progress (press floor first) / Next up (planned press runs and
stamper changes with time and press, jobs arriving at the next station)
/ Done today, filter per station, KPIs. Each work order opens a kiosk
view: the steps an operator follows (badge in, scan what the step asks
for, with the IDs to scan, confirm), confirmation times and who did it,
the order, lot or press it belongs to, and what it writes to the log.
Order detail lists the order's work orders by station. Mastering and
cutting are booked to the engineers, the lab, QC and maintenance to
technicians, the rest to numbered operators; jobs finishing at night are
booked to the late shift.

README, digital-factory.md demo paragraph and the landing page mention
the work orders.

docs/digital-factory.md

@@ -495,8 +495,9 @@ VictoriaMetrics. Packaged as a flake so the clan repo pins it as an input.
 
 **Demo.** [Factory console and order status](factory-console.html) (test
 site `/demos/factory/`) shows what the application would look like on a
-simulated plant day: the press floor with live counters per press, the
-optical inspection stream, audio samples, the material lab gate with a
+simulated plant day: the press floor with live counters per press, work
+orders per station in the kiosk form described below (badge in, scan
+what the step asks for, confirm), the optical inspection stream, audio samples, the material lab gate with a
 lot on hold, stamper metrology and genealogy, the hash-chained event log,
 and the customer portal of the same orders (progress through the three
 gates, copies pressed so far, the lab certificate of the compound lot,