Use this to check if a generation is complete and retrieve the resulting
video URLs and other metadata.

Use this when:
- You want to check if a generation has completed
- You need to retrieve video URLs from a previous generation
- You want to get the full details of a generated video

Task states:
- 'queued' or 'running': Generation is still in progress
- 'succeeded': Generation finished successfully
- 'failed' or 'cancelled': Generation reached a terminal error state

Returns:
    Task status and generated video information including URLs and status.

Efficiently check the status of multiple tasks in a single request.
More efficient than calling minimax_get_task multiple times.

Use this when:
- You have multiple pending generations to check
- You want to get status of several videos at once
- You're tracking a batch of generations

Returns:
    Status and video information for all queried tasks.

Single image uses first_frame mode; multiple images use reference_image mode.
The two modes are mutually exclusive per MiniMax H3 v2 API contract.

Audio-guided generation uses reference mode exclusively (reference_audio
forces the entire content into reference-to-video mode per the H3 v2 contract).