Bulk version of POST /api/v1/eventimport. Accepts an events array where each item is identical in structure to a single eventimport payload.

All-or-nothing behaviour: if any item in the array has a malformed payload, the entire request fails and no events are imported. There are no partial imports.

Field values must be strings, even for fields that look numeric (e.g. user IDs in rows pairs).

Recommended for integrators already familiar with eventimport. If you are new to event import, start with POST /api/v1/eventimport to validate your payload structure before using this endpoint.