极简科研配图流程

Draw a research-paper illustration showing a closed-loop LLM agent system. The left side begins with a user prompt, then flows into a planner, tool-use engine, retrieval module, memory buffer, and a final verifier that feeds corrections back into the system. Use a restrained academic palette of blue, slate, and orange accents. Style it like a clean paper illustration: vector-like blocks, precise arrows, sparse labels, balanced whitespace, and a clear Figure 1 narrative from problem input to verified output.