Select compact sensor decoding from the actual firmware version

[TobiasRoeddiger]

Real-device testing found that the factory's historically named firmware getter actually reads hardware generation UUID 45622512. Passing this value to the new transport selector made firmware 2.3.0 use the legacy decoder: IMU CSVs contained NaNs and PPG readings exceeded the 19-bit range.

Keep hardware generation for V1/V2 device identification. Read firmware UUID 45622513 separately before selecting the sensor parser on each connection. This also supports development firmware labels without changing generation matching.

Validation: the factory/GATT regression test fails before this fix and passes afterward across 2.2.9 → 2.3.0 → prerelease → 2.2.9. All 47 library tests pass and analysis is clean. Live Android Recorder repeat passes: firmware 2.3.0 delivers 99.67 Hz IMU and 512.27 Hz PPG in separate 30-second windows, with finite values, valid PPG range, no backward timestamps and zero app parsing exceptions. A connected legacy-firmware earphone remains correct. Full 2.2.9 and paired 2.3.0 release testing continues.

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