feat: add secure online backup key management

scripts/verify-public-release.mjs

@@ -36,6 +36,8 @@ const sourceFiles = [
   'lib/log-policy.js',
   'lib/log-rotation.js',
   'lib/online-backup.js',
+  'lib/online-backup-keyring.js',
+  'lib/online-backup-manager.js',
   'lib/orphan-tmp.js',
   'lib/queue-dedup.js',
   'lib/queue-prune.js',
@@ -119,6 +121,8 @@ const sourceFiles = [
   'tests/log-rotation.test.js',
   'tests/online-backup-service.test.js',
   'tests/online-backup.test.js',
+  'tests/online-backup-keyring.test.js',
+  'tests/online-backup-manager.test.js',
   'tests/orphan-tmp.test.js',
   'tests/package-build-files.test.js',
   'tests/public-release-verifier.test.js',