maziggy 0cf7a11f46 fix(#1105): recognise new H2C serial prefix "31B8B" for dual-nozzle detection ...

Bambu started shipping H2C units with a new serial prefix (`31B8B…`
  observed on a January 2026 unit) instead of the legacy `094…` shared by
  the H2D/H2C/H2S family. Two serial-prefix-driven paths — the K-profile
  edit branch in `kprofiles.py` and the delete-K-profile MQTT command in
  `bambu_mqtt.py::delete_kprofile` — were silently routing the new units
  through the single-nozzle format.

  Match on 5 chars (`31B8B`): covers the 3-char model code plus the two
  revision bytes, leaving the revision-letter slot free to iterate. This
  mirrors the X2D precedent of using a longer-than-3-char prefix when a
  single data point can't confirm family reuse.

  Runtime dual-nozzle detection via `device.extruder.info` count and
  model-string branches (`self.model in ("H2C", "H2D", …)`) are already
  prefix-agnostic — no change needed there.

  - backend/app/api/routes/kprofiles.py: add "31B8B" to is_h2d tuple
  - backend/app/services/bambu_mqtt.py: same in delete_kprofile
  - backend/tests/unit/services/test_bambu_mqtt.py: regression test
    `test_h2c_new_prefix_uses_dual_nozzle_format`

2026-04-24 08:15:07 +02:00

..

routes

fix(#1105): recognise new H2C serial prefix "31B8B" for dual-nozzle detection

2026-04-24 08:15:07 +02:00

__init__.py

…