Bambu's `stg_cur`: what a printer is doing when it is not laying down
plastic - bed levelling, nozzle cleaning, extrusion calibration. Passed
through as the printer's own number rather than decoded, because the
code-to-name table is not something we have. 0 means printing.
It is here because progress without it is ambiguous in a way that reads as a
fault. Confirmed on a P1P (2026-10-11): `percent` climbed to 14% while
`layer` stayed 0 for several minutes, the printer working through stages 54,
14 and 13 before starting layer 1. A console showing 14% at layer 0 with no
stage looks stuck, and an operator would reasonably go and power-cycle a
machine that was working perfectly.
Optional and additive, so gateways that predate it are unaffected.
octoturge
14e8febfc9