{
    "type": "update",
    "label": "All-in-One Communications V16.12.18 Migration Null Guard Hotfix",
    "applied_at": "2026-04-17T19:32:32+00:00",
    "from_version": "16.12.17",
    "to_version": "16.12.18",
    "schema_affecting": true,
    "restored_from": null,
    "notes": [
        "Fixes Repair / Migrations failing when mailbox mirror backfill encounters JSON null values in legacy metadata.",
        "Safely ignores JSON null, empty, and non-numeric connected_mailbox_id and imap_uid values during mailbox mirror backfill.",
        "Hardens queued-email repair so invalid legacy metadata JSON does not break the migration pass.",
        "After applying V16.12.18, rerun Repair / Migrations."
    ]
}