From c36c3c5342682eaee9a5a135e255686ce40bfc3c Mon Sep 17 00:00:00 2001
From: Adam Soltys <adam@coinos.io>
Date: Fri, 6 Mar 2026 23:36:48 -0800
Subject: reuse existing tab on notification click, fallback to new tab

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
---
 src/service-worker.js | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/service-worker.js b/src/service-worker.js
index b4c576ba..43f0b60b 100644
--- a/src/service-worker.js
+++ b/src/service-worker.js
@@ -130,5 +130,12 @@ self.addEventListener("notificationclick", (event) => {
   const path = event.notification.data.url || "/";
   const target = new URL(path, self.location.origin).href;
 
-  event.waitUntil(clients.openWindow(target));
+  event.waitUntil(
+    clients.matchAll({ type: "window" }).then((clientList) => {
+      for (const client of clientList) {
+        return client.navigate(target).then(() => client.focus());
+      }
+      return clients.openWindow(target);
+    }),
+  );
 });
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