flowchart LR
  Input(["💬 用户指令"])
  Router{"🔍 引擎意图分析\n（语义匹配技能库）"}
  Simple["⚡ 简单路径\nSingle-Skill Direct\n无 LLM 调用"]
  Complex["🧠 复杂路径\nReAct Planning Loop\n动态拆解 + 多轮 LLM"]

  Input --> Router
  Router -->|"Skill 命中率高\n单一、明确意图"| Simple
  Router -->|"无匹配 Skill\n模糊或组合目标"| Complex

  style Simple fill:#eff6ff,stroke:#3b82f6,stroke-width:2px,color:#1e3a8a
  style Complex fill:#fff7ed,stroke:#f97316,stroke-width:2px,color:#7c2d12
  style Router fill:#faf5ff,stroke:#a855f7,stroke-width:2px,color:#6b21a8