_startup_login's background thread and _handle_authenticate's shared the
module-level _login_result_queue with no correlation. Since _startup_login
can now time out at 10s while its thread keeps running (from the previous
fix in this wave), a slow-cold-starting subprocess's first explicit
"Connect to Garmin" call could accidentally dequeue the startup thread's
stale result instead of its own fresh one, orphaning the loser's result to
corrupt a later authenticate/complete_mfa call.
_handle_authenticate and _handle_complete_mfa still correctly share
_login_result_queue -- they're two halves of one explicit, MFA-capable
login flow. _startup_login is a background tokenstore resume with no MFA
involved, so it now uses its own private, function-local queue.Queue()
instead, making cross-contamination structurally impossible.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Christophe Vila
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