ln: time out short-lived RPCs so a hung cl reconnects without restart

Port of master a664af99. A unix-domain RPC socket has no TCP keepalive, so
if cl goes unresponsive while the socket stays open (zombie/half-open) an
awaited call hangs forever — nothing throws, the reconnect-on-error path
never fires, and only an app restart recovers. Wrap short-lived calls in a
30s Promise.race timeout (matching lib/health.ts); a timeout rejects with
ETIMEDOUT, now part of isSocketDied, so the client is dropped and the next
call reconnects. Long-polls, in-flight payments (pay/xpay/sendpay/keysend)
and bolt12 round-trips are exempt to avoid leaked debits.

Co-Authored-By: Claude Opus 4.8 <[email protected]>

0 files changed, 0 insertions, 0 deletions