User, 18 Oct 2026: list the sensors the optical QC station uses.
- inline-optical-qc.md: sensor table in the station setup (4 cameras,
2 warp lasers, spindle encoder, 3 presence sensors and a through-beam,
6 cylinder position switches, door switch; thermal camera option and
laser line profiler alternative), with where each sits, what it
measures and the price signal.
- BOM: cylinder position switches were missing (6, SMC D-M9 class,
USD 25 to 60 each, estimate). Total now USD 16,264 to 33,184, still
16k to 33k; THB 0.54M to 1.10M.