Add Runstar R6 scale support#1432
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Adds RunstarR6Handler for the Runstar R6, whose FFB0 protocol is distinct from R5 despite the similar name. Publishes live weight, heart rate, impedance, and syncs offline-stored history entries. RunstarR5Handler now excludes "RUNSTAR-R6" explicitly so the two can't collide; R6 is registered ahead of R5 in ScaleFactory. Also corrects two stale comments in RobiS9Handler now that the shared FFB0 checksum and impedance/heart-rate offsets are known.
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R5 matched any "RUNSTAR-" prefix, which also caught R6 devices. Restrict it to the known "RUNSTAR-R5"/"RUNSTAR-RX" names instead of adding an R6-specific exclusion — removes the need for R6 to be registered ahead of R5, and the collision no longer needs explaining in RunstarR6Handler's doc. Also trims two RobiS9Handler comments down to the new finding (checksum formula, impedance/heart-rate offsets) without pointing at RunstarR6Handler for the backstory.
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Adds a handler for the Runstar R6, reverse-engineered from an HCI snoop of the vendor app plus field tests against the device.
Working: live weight, heart rate, impedance, and syncing offline-stored history entries (weigh-ins taken while disconnected).
Not implemented: body composition (fat/water/muscle) — the scale only exposes raw impedance, no derived values.
The R6 shares its FFB0 frame family with the existing
RobiS9Handlerbut is a different, incompatible protocol from the R5 despite the similar name —RunstarR5Handler.supportFor()previously matched anyRUNSTAR-*name and would silently swallow R6 devices, so R5 now excludesRUNSTAR-R6explicitly and R6 is registered ahead of it.Btsnoop capture attached.