A Generative AI Engineer is tasked with creating a GenAI system to assist analysts in reviewing and escalating cybersecurity incidents. The input is a stream of event logs, and the output must include a structured incident summary and a recommended escalation level. The business team emphasizes that the AI should clearly differentiate between routine events and critical anomalies using multiple evaluation criteria across the pipeline. Which of the following pipeline designs best aligns with the business need for structured, multi-stage reasoning and traceability?