docs/plant-operation.html: one self-contained static page showing the
whole plant running, from PVC intake and the material lab gate through
extruder, press cycle (load/close/steam/cool/open/eject), trimmer, 100%
optical inspection, sampled audio comparison, finishing, packaging
(matrix code vs barcode) and fulfillment. The metal path (audio intake,
mastering, cutting, silvering, father/mother/stamper, stamper prep) runs
above with the three artist gates; utilities (steam, cooling, air,
hydraulics, grinder/regrind, energy, traceability, HVAC) below with
live-looking tags.
Numbers are taken from the repo (Newbilt site requirements, scale.md,
quality-automation.md, process-flow.md). Every station is clickable for
what happens there and the checks that gate it. Two demo buttons show a
steam pressure dip holding the press and a new PVC lot held by the lab
until a test pressing releases it. README links the page.
