pub async fn handle(
__arg0: State<Arc<AppState>>,
__arg1: Json<ExportRequest>,
) -> impl IntoResponseExpand description
POST /api/export — Export address data.
Supports address book shortcuts: pass @label as the address to
resolve it from the address book.
Returns the export data directly as JSON (regardless of requested format)
since the web API always returns JSON. The format field is preserved
in the response metadata for client-side handling.