fix: resume queued delivery on reconnect (Closes #917)

frontend/session.js

@@ -36,6 +36,7 @@
     root.fetch = boundary.fetch;
     const attach = () => {
       boundary.startActivityHeartbeat();
+      boundary.startReconnectResume();
       const button = root.document.getElementById('sign-out');
       if (button) button.addEventListener('click', () => boundary.signOut());
       const allDevicesButton = root.document.getElementById('sign-out-all');
@@ -387,6 +388,12 @@
     });
   }
 
+  function startReconnectResume() {
+    addActivityListener?.('online', async () => {
+      if (await refreshOfflineLease()) await resumeQueuedWork();
+    });
+  }
+
   async function refreshOfflineLease() {
     try {
       const response = await sessionFetch(base + 'api/v1/session');
@@ -617,6 +624,7 @@
     handleServiceWorkerMessage,
     refreshOfflineLease,
     resumeQueuedWork,
+    startReconnectResume,
     recordActivity,
     startActivityHeartbeat,
   };