Optical QC: one station for both presses, after the cooling racks

User, 18 Oct 2026: for now one QC station for both machines; let the
records cool in a queue before testing them.

- inline-optical-qc.md "Where it sits": launch setup. Spindle stacks
  from the Duplex system and the Classic, labelled at the press (press,
  stamper set, first and last cycle), cool in FIFO racks (24 h accepted
  practice, 8 h at the shortest, Stamper Discs; about one day of output,
  2,800 to 3,100 records); the finishing operator feeds the station from
  the cooled stacks. Gains: warp and centring measured on settled records
  (the release value), one station instead of two, no Classic unloader
  change, no warm-record sag or thermal camera. Cost: defects found hours
  later, covered by the Duplex operator, per-cycle telemetry and an early
  lane for the first records of each run and after stamper changes.
  Record key from the stack label and stack position, checked against the
  run-out stamper number. Capacity 10 to 12 a minute against 5 to 6:
  one station to about two Duplex systems and two Classics. A station at
  each press stays the later option. Cost table, open points, infeed row,
  thermal camera note and the Newbilt question follow.
- Fleet calculator: the per-press stations and the release station are
  gone; the finishing block shows the cooling racks with record stacks
  and the one optical station by the corridor glass; tooltips, corridor
  and conveyor texts; machine park back to its legend, finishing box
  "cooling, QC, packing".
- quality-automation.md layer 1, digital-factory.md QC row,
  process-flow.md stage 6, site-candidates.md block ground floor,
  crane-workshop-tours.md tour stop 6.
- Investor render: infeed label "the operator sets each cooled record
  down".

Checks: node --check; pw_bp_calc.py 0 fails; pw_iso_view_check.py OK;
info for every data-id at all presets, levels and rotations; GF nodes
2,414 at the full preset; zoomed shots in two rotations.

docs/equipment/inline-qc-station/render_annotated.py

@@ -18,7 +18,7 @@ V = App.Vector
 ANCHORS = [
     ("frame", V(340, -320, 1150), "Aluminium profile frame", "40 × 40 mm slot profile, 1.9 × 0.65 × 1.5 m"),
     ("belts", V(70, -151.5, 897), "Rim-belt conveyor", "touches only the record's edge, never a groove"),
-    ("infeed", V(200, -80, 902.5), "Infeed", "the operator or the press unloader sets the record down"),
+    ("infeed", V(200, -80, 902.5), "Infeed", "the operator sets each cooled record down"),
     ("label", V(520, -15, 1275), "Label cameras, top and bottom", "right label, right side, centred"),
     ("tunnel", V(820, 319, 1100), "Light-tight tunnel", "black panels keep factory light out"),
     ("lscan_top", V(975, -31, 1385), "Line-scan camera, top", "images a full radius while the record turns once"),