Every ARTIK051_KRAC_18K-generation unit confirmed on hardware (three units
across two reporters) only ever carries Volume_100 or Volume_Mute in
/mode/vs/0's options -- never an intermediate value -- so the existing
buzzer_volume Number (0-100, step 10) modeled a control this firmware
doesn't have. Worse, its write path could never produce the literal
'Mute' token needed to actually turn the beep off, since it only ever
wrote a plain integer string. The 'beep' switch already used on newer
boards is the correct model here too; it's no longer gated off the legacy
board generation, and the Number entity is removed.
The WindFree-preset-not-applying report earlier in this issue self-resolved
per the reporter's own follow-up testing, so no code change was needed for
that part.