- /register endpoint no longer requires verifyAPIRequest() - it is
the bootstrap handshake and api_secret cannot be set before it runs
- Add api_secret field to the Add Board form (hardware boards only)
with a cryptographic Generate button, same as the Edit form
- Save api_secret from the add-board POST so the driver can sign
requests immediately after registration
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.
