{ "$schema": "https://json-schema.org/draft/2020-12/schema", "$id": "#/components/schemas/S3Config", "title": "S3Config", "type": "object", "properties": { "bucket": { "type": "string", "description": "S3 bucket name" }, "prefix": { "type": "string", "description": "S3 key prefix for exported files" }, "region": { "type": "string", "description": "AWS region" }, "roleArn": { "type": "string", "description": "AWS IAM role ARN for cross-account access" } } }