Bulk Update Status

Update status for multiple contents at once. Bulk status update operation useful for batch processing workflows. Args: content_ids: List of content IDs to update new_status: New status value (new, processing, completed, failed) status_message: Optional status message Returns: Summary of update results Example: PATCH /contents/bulk/update-status Body: { "content_ids": ["con_123", "con_456"], "new_status": "completed", "status_message": "Processing finished successfully" }