[Aulos]

Summary

Add local support for xiaomi.airp.mc6 through a separate AirPurifierMC6 implementation. The MC6 uses Auto=0, Sleep=3 and Favorite=5 and different property IDs from the existing purifier models.

DeviceFactory(xiaomi.airp.mc6) -> AirPurifierMC6
status -> batches of up to five get_properties reads
controls -> validated set_properties values and matching acknowledgements

Includes power, modes, Favorite/fan levels, screen/brightness, buzzer, child lock, ionizer, UV, environmental/filter readings and target/actual motor speed. Exports the class and exposes it through miiocli airpurifiermc6 with status descriptors. Unknown modes and failed optional properties remain unavailable; failed power reads raise DeviceException.

Fixes #2097.

Evidence

• Before: the model is not registered with DeviceFactory.
• After: factory and CLI discovery succeed. pytest -q miio reports 1550 passed, 7 skipped, 1 xfailed and 43 subtests passed. All pre-commit checks pass, including mypy.
• The fixture contains sanitized local readings from an EU MC6 running firmware 1.0.5. Tests cover the property IDs, five-property batches, failed reads, mode/range validation, exact write payloads and rejected acknowledgements.
• This new class was tested directly with a read-only status() call on the device: all 21 mapped properties returned values.
• Separate prior device tests verified screen switching and mode/Favorite-level writes at all ten levels, with original settings restored afterward. Other new-class write methods have automated protocol tests but have not all been physically verified.

Specification: https://miot-spec.org/miot-spec-v2/instance?type=urn:miot-spec-v2:device:air-purifier:0000A007:xiaomi-mc6:1:0000D050

Merge Danger

Door: Two-way.

Blast Radius: MC6 only. Existing purifier implementations and dependencies are unchanged. Polling is read-only. Undocumented units, debug writes and action buttons are omitted from this initial support; measured RPMs are not hardcoded as universal per-level settings.

Prepared with AI assistance and device-owner testing. No credentials, device IDs or private addresses are included.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 84.52%. Comparing base (9a00e08) to head (d71f307).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2098      +/-   ##
==========================================
+ Coverage   84.31%   84.52%   +0.20%     
==========================================
  Files         201      204       +3     
  Lines       20656    20915     +259     
  Branches     1121     1134      +13     
==========================================
+ Hits        17417    17678     +261     
+ Misses       3047     3045       -2     
  Partials      192      192              

☔ View full report in Codecov by Harness.
📢 Have feedback on the report? Share it here.