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

sw_scripts/additional-scripts.js

@@ -115,7 +115,7 @@ self.addEventListener("push", function (event) {
 self.addEventListener("message", (event) => {
   logConsoleAndDb("Service worker got a message...", event);
   if (event.data && event.data.type === "SEND_LOCAL_DATA") {
-    self.secret = event.data.data;
+    self.secret = event.data.data; // used in safari-notifications.js to decrypt the account identity
     event.ports[0].postMessage({ success: true });
   }
   logConsoleAndDb("Service worker posted a message.");

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);