/airflow/0's speed was left read-only because the first round of diagnostics
wasn't conclusive (0 for both Auto and High, 3 for Low/Medium and Sleep) --
likely because all five dumps were captured within about a minute of each
other, faster than this integration's own poll cycle could settle each
change. A second round, captured 60-90s apart per setting on two independent
units, confirmed a clean monotonic 0-4 mapping across Auto/Sleep/Low/Medium/
High instead.
Builds an ordered-speed fan off that confirmed range, the same SET_SPEED
shape as the range hood's fan -- this board never self-reports a
supportedModes-style label list, so there's no named-preset table to
preserve, just percentage steps over the raw code. /airflow/vs/0's vendor
speedLevel stays a read-only fallback since it was unreliable in that same
second round.
Marc Billow
d4583b3240