switch the encryption secret from localStorage to IndexedDB (because localStorage gets lost so often)

sw_scripts/safari-notifications.js

@@ -515,6 +515,7 @@ async function getNotificationCount() {
 
   const identity = activeAccount && activeAccount["identity"];
   if (identity && "secret" in self) {
+    // get the "secret" pulled in additional-scripts.js to decrypt the "identity" inside the IndexedDB; see account.ts
     const secret = self.secret;
     const secretUint8Array = self.decodeBase64(secret);
     const messageWithNonceAsUint8Array = self.decodeBase64(identity);