Retry the first WhatsApp connection

Keep failed starting connections in the Run select with a timer. Start
at 2 seconds and double the wait up to 5 minutes, so the inbox and
commands stay active during waits. End retries on a connection, context
end, or link change.

Share outage times, notices, status, and redacted logs with lost
connections. Keep one failure line and one recovery line for an outage.

Disable library startup retries only for linked devices. A returned
ConnectContext error has no Disconnected event, while the library retry
mode emits that event and returns nil. One retry owner prevents parallel
loops and gives the requested delay cap. Pairing and retries after an
open connection keep their library behavior.