--print-reset-code runs as a separate process and persists the new code;
the running server's cache was never told, so the code the customer was told
to type was refused until the controller restarted. Nothing said so — during
the 2026-08-04 drill that cost two attempts with an operator present.
effectiveClaimCode now reads through to the persisted state before applying
the settings-vs-config precedence, which is itself unchanged. Read-through,
not a TTL: a TTL would leave a window in which a superseded code still works,
which is worse than the bug. Fails closed on an unreadable state; an absent
file is not an error.
