Advance fresh address instantly on WS deposit

The pending balance showed immediately from the WS ingest, but the next
receive address/QR only appeared after the debounced refreshLive. Now the WS
ingest marks the receiving address used and advances the fresh index right
away, so the new address shows in the same update as the balance.

Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>

1 files changed, 18 insertions, 3 deletions

diff --git a/src/wallet.js b/src/wallet.js
index b266283..c57149f 100644
--- a/src/wallet.js
+++ b/src/wallet.js
@@ -697,12 +697,27 @@ export class Wallet {
         const confirmed = !!(tx.status && tx.status.confirmed);
         this.utxos.push({ txid: tx.txid, vout: i, value: vo.value, address: a, chain: p.chain, index: p.index, confirmed });
         have.add(id);
-        if (confirmed) this.confirmed += vo.value;
-        else this.pending += vo.value;
+        // Mark the receiving address used + record its balance, so the fresh
+        // index advances immediately (next address/QR shows right away).
+        const arr = p.chain === 0 ? this.receive : this.change;
+        let entry = arr.find((e) => e.index === p.index);
+        if (!entry) {
+          entry = { chain: p.chain, index: p.index, address: a, used: false, confirmed: 0, pending: 0 };
+          arr.push(entry);
+        }
+        entry.used = true;
+        if (confirmed) entry.confirmed = (entry.confirmed || 0) + vo.value;
+        else entry.pending = (entry.pending || 0) + vo.value;
         changed = true;
       });
     }
-    if (changed) this.emit();
+    if (changed) {
+      this.nextReceiveIndex = firstUnused(this.receive);
+      this.nextChangeIndex = firstUnused(this.change);
+      this._recomputeBalanceFromChains();
+      this.retrack(); // start watching the new fresh address
+      this.emit();
+    }
     return changed;
   }