Canonical event names across the reporting feed, matching hblink4's emit()
vocabulary (the OmniLink north star):
* peer -> peer_connected / peer_disconnected
* stream -> stream_start / stream_end
The lifecycle now rides the message `type`; the `action` field is retained
where consumers still use it (log label, END duration/hang handling).
Unix-socket transport for a same-box dashboard, alongside the existing TCP:
* daemon: REPORT_TRANSPORT=unix binds start_unix_server on REPORT_SOCKET
(stale socket file cleared first); TCP stays the default for remote dashboards.
* dashboard: HBLINK_TRANSPORT=unix connects via open_unix_connection(HBLINK_SOCKET).
A local Unix socket can't NIC-flap or be conntrack-evicted, retiring the whole
silent-severance class for local dashboards (filesystem perms replace the IP ACL;
TCP keepalive is moot).
Also: ping-cadence calibration now takes the MEDIAN of the first PING_WARMUP
gaps (robust to an odd first interval), counting loss only once the cadence
is known.
Tests updated for the new vocabulary; fixes an unbounded-loop test bug in
test_loss_registers_then_ages_out (the window-fill loop's bound tracked the
list it was appending to -> infinite append -> OOM).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Cort BuffingtonandClaude Opus 4.8
1c463fb52b
