feat: add expiring backups and live account checks

lib/online-backup-manager.js

@@ -27,7 +27,8 @@ function sanitizeEntry(entry) {
   return {
     id: entry.id,
     displayKey: entry.displayKey,
-    createdAt: entry.createdAt
+    createdAt: entry.createdAt,
+    expiresAt: entry.expiresAt ?? null
   };
 }
 
@@ -35,7 +36,8 @@ function sanitizeCreatedEntry(entry, key) {
   return {
     id: entry.id,
     displayKey: `${key.slice(0, 9)}…${key.slice(-4)}`,
-    createdAt: entry.createdAt
+    createdAt: entry.createdAt,
+    expiresAt: entry.expiresAt ?? null
   };
 }
 
@@ -71,11 +73,11 @@ function createOnlineBackupManager({
     };
   }
 
-  async function createTransaction() {
+  async function createTransaction(retention) {
     const createdAt = new Date().toISOString();
     const settings = await loadSettings();
-    const created = createBackup(settings, appVersion(), createdAt);
-    const prepared = keyring.prepare(created.key, createdAt);
+    const created = createBackup(settings, appVersion(), createdAt, retention);
+    const prepared = keyring.prepare(created.key, createdAt, created.expiresAt ?? null);
     await uploadBackup(created.record);
     try {
       await keyring.commit(prepared);
@@ -117,9 +119,9 @@ function createOnlineBackupManager({
     }
   }
 
-  async function createManaged() {
+  async function createManaged(retention = '7d') {
     try {
-      return await serialize(createTransaction);
+      return await serialize(() => createTransaction(retention));
     } catch (error) {
       return keyringFailure(error, ERRORS.create);
     }