A direct message was transmitted once and marked failed the moment its
single delivery-ack window lapsed, leaving Ctrl-R as the only recourse.
Now the send path re-sends an unacknowledged message automatically before
giving up, matching the mesh convention of a few tries.
_deliver_direct loops send_direct_message until an ack lands or the budget
is spent; both the initial send and the manual Ctrl-R resend route through
it. Each attempt already blocks a full ack window before the next, so the
retries are spaced by that window rather than hammering the radio, and a
hard send rejection propagates without retry.
The budget is the new direct_message_soft_retries setting: retries + 1
tries, clamped to 0..2 so a message is never re-broadcast more than twice
(0 = one shot, default 2 = up to three tries).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Jean-Pierre MartineauandClaude Opus 4.8
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