feat(xsm3): persist auth state across host power cycles #2
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When the host power cycles, it re-authenticates the Pico device. Previously, reinitializing XSM3 state caused the host to abort and flag the device as non-official. This commit ensures that the computed XSM3 identification and keys are persisted so re-auth stays consistent across sessions and succeeds after host resets.
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When the host power cycles, it re-authenticates the Pico device. Previously, reinitializing XSM3 state caused the host to abort and flag the device as non-official, requiring to complete reset Pico state either by changing input method or by disconnecting and reconnecting the Pico device.
This PR ensures that the computed XSM3 identification and keys are persisted so re-auth stays consistent across sessions and succeeds after host resets.