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Diagnosis Agent 执行架构

更新日期:2026-07-22 状态:当前可运行架构

1. 单 Agent 原则

当前业务诊断只有一个 Diagnosis Agent。它使用框架 ReactAgent 完成规划、行动、观察和最终 Draft,但项目不在外层复制 ReAct 状态机,也不使用业务 Graph 或多角色协作链。

2. 职责

Diagnosis Agent:

  • 接收当前 query 与可选、受限的安全 PreviousTurn。
  • 自主选择只读 evidence Tool。
  • 根据 Agent projection 判断是否需要继续查询。
  • 输出结构化 DiagnosisDraft,每条 analysis 绑定 framework tool_call_id。
  • 证据不足时明确限制,不补造事实。

Diagnosis Agent 不负责:

  • HTTP/SSE、Session/Run 生命周期和持久化。
  • 模型/Tool/Token/timeout/cancel 预算。
  • Tool 参数授权、raw response 投影或证据物理验真。
  • SemanticGuard 与最终发布决定。

3. 执行序列

sequenceDiagram
    participant App as Chat Application
    participant Core as Harness Core
    participant Agent as Diagnosis Agent
    participant Tool as ACI Tool Boundary
    participant EG as EvidenceGuard
    participant SG as SemanticGuard
    participant Release as Release Policy

    App->>Core: start RunContext
    App->>Agent: query + safe previous_turn
    Agent->>Tool: tool name + framework tool_call_id + typed args
    Tool-->>Agent: bounded agent_result
    Agent-->>App: DiagnosisDraft
    App->>EG: Draft + current Run canonical invocations
    EG-->>App: verified snapshot or deterministic failure
    App->>SG: query + full Draft + verified snapshot
    SG-->>App: SUPPORTED / UNSUPPORTED
    App->>Release: decide public content
    Release-->>App: report or fixed fallback

4. PreviousTurn

PreviousTurn 只来自同一 Session 最近一个 DIAGNOSIS + SUCCESS + published_result。Fallback、失败、取消、raw evidence 和完整历史都不能进入下一轮;字段与字节上限由 Harness 配置控制。