Authorize Account

Submit signed EIP-712 messages to Hyperliquid and activate the account.

The body runs inside the account-flow boundary (Q-1601, services/account_flow_events.py): attempted/authorized/authorize_failed are recorded once, there, from the body's outcome — the body never emits (account.authorization_restored, the A8e trigger, stays in the reauth branch because it is the domain transition itself).

PostHog exchange_connected (Q-1573) is captured only after the authorization COMMITS: the commit is where the V162 deferred drift guard can still refuse it (Q-1471's shape), and an event describing an authorization that rolled back is a phantom money-stage row.