A zap answers as fast as the route allows.

The wallet used to add two to four seconds of its own around a Lightning
send: a random pause plus a relay look-back before paying, and a
two-second poll for the result after. The notifier's claim now decides
who pays in one round trip, with the relay look-back kept only for
replays and for when the notifier gives no verdict; a phone answering
from behind another app waits a second so a desktop tab wins the claim
instead of paying at a throttled crawl. After the send, one held
CheckLightningPayment call brings the preimage the moment CLN has it —
for wallet-connect pays, the background worker, and the app's own Send.

Co-Authored-By: Claude Fable 5.1 <[email protected]>
Claude-Session: https://claude.ai/code/session_01QYJfZ4A1TDCEY4Foq3CApR

1 files changed, 9 insertions, 0 deletions

diff --git a/tools/nwc-test.js b/tools/nwc-test.js
index b68a89b..9189d52 100644
--- a/tools/nwc-test.js
+++ b/tools/nwc-test.js
@@ -144,6 +144,15 @@ console.log('\n[cross-device claim]');
   claimOk = true;
   r = await request('get_balance', {});
   check('non-pay methods need no claim', r?.result?.balance === 42000*1000);
+  // no verdict from the notifier → the relay look-back decides
+  claimOk = null; priorReplies = [{ id: 'x' }];
+  const n2 = published.length;
+  await request('pay_invoice', { invoice: INV21 });
+  check('no verdict + a reply on the relays → silent', published.length === n2);
+  priorReplies = [];
+  r = await request('pay_invoice', { invoice: INV21 });
+  check('no verdict + nothing on the relays → pays', !!r?.result?.preimage);
+  claimOk = true;
 }
 
 console.log('\n[nip04 fallback]');