All local instances share the data dir and therefore the relay identity
(serverId), so concurrent relay hosts evicted each other at the relay worker
(4001: Control replaced) and paired devices landed on whichever local process
won last — often a stale dev server, surfacing as 'Unable to reach server'
and devices stuck on relay with 503s on newer endpoints.
- relay/host-lock.js: per-machine claim file (relay-host.lock, {pid}); stale
claims from dead pids are ignored; unwritable data dir falls back to
pre-lock behavior
- relay/service.js: start only when the claim is free or ours, otherwise
'standby' with the holder pid in lastError; 30s watcher takes over when the
claimant dies and stands down when another process claims; pairing-link
creation and explicit /relay/enable force-claim (user intent wins)
- mobileConnections.ts: log candidate-refresh skip reasons and the refresh
result instead of failing silently
Bohdan Triapitsyn
04307e163b