Download the result file from an AI Workflow Engine execution.

This endpoint provides a download URL for the result file generated
by an AWE workflow execution, if the result type is a file.

Parameters:

• request: HTTP request object containing authentication information
• awe_execution_uuid: UUID of the AWE execution to download results for
• workspace_uuid: Optional workspace UUID for context

Returns:

• Dictionary containing the signed download URL for the result file

Raises:

• HTTPException: If execution not found, result is not a file, or access is denied