Push notifications for payments and messages; offline Spending notice

The nwcpush notifier grows a second registration kind alongside NWC:
a notify watch of what it can see without keys — kind-1059 wraps
p-tagged at the user (DMs, direct invites), zap receipts (9735/9737),
and wraps authored by the user's community channel keys (chat). It
pushes a typed nudge, throttled per device (chat bursts collapse); the
service worker shows a generic notification unless a window is visible,
and tapping opens the app. The names registrar reports settled
lightning-address receives server-to-server (token-gated /notify), so
the common payment path notifies even with no nostr event in sight.

The app registers silently whenever permission is already granted and
keeps the watch current as communities change; a dismissible card on
the chat home offers to enable it otherwise. Ark zap receipts (9737)
join the relay whitelist so the payment watch can see them.

Also: the offline Spending receive pane now says you're offline and
offers a one-tap switch to Savings instead of spinning forever.

Co-Authored-By: Claude Fable 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01Wvj4aoeMZwA7VUGdJP9Swi

1 files changed, 7 insertions, 0 deletions

diff --git a/names/server.js b/names/server.js
index d9aa299..99552dc 100644
--- a/names/server.js
+++ b/names/server.js
@@ -301,6 +301,13 @@ async function settleLoop() {
     if (!name) continue; // not one of ours (e.g. the ASP's own invoices)
     const sat = Math.floor((inv.amount_received_msat?.msat ?? inv.amount_received_msat ?? 0) / 1000);
     if (!sat) continue;
+    // money has arrived for this name — push-notify their devices (best effort)
+    if (CFG.push && CFG.push.url && state.names[name]) {
+      fetch(`${CFG.push.url}/notify`, {
+        method: 'POST', headers: { 'content-type': 'application/json' },
+        body: JSON.stringify({ token: CFG.push.token, pubkey: state.names[name].pubkey, amountSat: sat }),
+      }).catch(() => {});
+    }
     if (pending) {
       if (pending.zap) publishZapReceipt(pending, inv).catch(() => {});
       delete state.invoices[inv.payment_hash];