30806560a6
The previous _compute_sign_key() function indexed into a base64 string derived from the full SonoffLAN REGIONS dict (~243 entries). Our partial dict only produced a 7876-char a string but needed index 7872+, so the function must use the full dict. Solution: pre-compute the key once from the full dict and hardcode the resulting 32-byte ASCII key. This is deterministic — the SonoffLAN algorithm always produces the same output regardless of when it runs. The sonoff_ewelink driver now loads cleanly alongside all other drivers.