137 lines
3.3 KiB
Markdown
137 lines
3.3 KiB
Markdown
# 运行阶段机
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## 1. 定位
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阶段机 = **并发与权限模型**：谁在场、哪些 tool 可用、何时必须等用户、产物何时算事实。
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**不是** 流水线执行器；「下一步 invoke 哪个 skill」由 agent tool loop 决定。
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```text
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业务 stage（Book / Session）
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design（实例化）→ play（运行）→ done
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运行相位（RuntimePhase）
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idle | running | waiting_user | done | error
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```
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---
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## 2. 五个运行相位
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```ts
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type RuntimePhase = "idle" | "running" | "waiting_user" | "done" | "error";
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```
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| phase | 含义 |
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|-------|------|
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| `idle` | 会话已创建 |
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| `running` | agent burst 或 worker 执行中 |
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| `waiting_user` | 等用户（见 waitingReason） |
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| `done` | 正常结束 |
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| `error` | 不可恢复 |
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---
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## 3. waitingReason
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```ts
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type WaitingReason =
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| { kind: "skill_selection"; availableSkills: SkillIndexEntry[] }
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| { kind: "intake"; prompt: string }
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| { kind: "input"; message?: string }
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| { kind: "approve_step"; decisionId: string }
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| { kind: "review_artifact"; artifactId: string }
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| { kind: "worker_questions"; workerId: string; questions: string[] }
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| { kind: "revision"; instruction?: string };
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```
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---
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## 4. 阶段机 vs tool
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| 角色 | 说明 |
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|------|------|
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| **循环 tool** | 仅当 `running` 且无阻塞 worker；结果进 agent messages |
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| **边界 tool** | 触发 phase / waitingReason 变化 |
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| **用户 event** | 唯一 approve、accept；burst 计数归零 |
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| **Worker** | `running` 且 `currentWorkerId` set 时，总管暂停 |
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目标态工具表见 `tool-contracts.md`。
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---
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## 5. Tool loop burst
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```text
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用户硬事件
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→ toolLoopBurstCount = 0
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→ phase = running（若适用）
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→ agent while burst < maxBurst:
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循环 tool …
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边界 tool → 可能 waiting_user / 启动 worker
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→ worker 完成 → 按 acceptanceMode 可能 waiting_user
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```
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`maxBurst`：**两次用户操作之间**的上限（默认 12）。
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---
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## 6. 典型转移（简化）
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```text
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idle → skill_selection
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skill_selected → intake 或 input
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intake 完成 / confirm → running → agent burst
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running → run_worker → approve_step 或 worker 执行
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worker_completed → review_artifact（user_confirmed）
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user_accepted → running → agent burst
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finish → done
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```
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---
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## 7. 会话结构
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```ts
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type RuntimeSession = {
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id: string;
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phase: RuntimePhase;
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waitingReason?: WaitingReason;
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currentWorkerId?: string;
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acceptanceMode?: AcceptanceMode;
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resumeContext?: ResumeContext;
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slots: Record<string, unknown>;
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artifacts: ArtifactRecord[];
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pendingDecision?: MainAgentDecision;
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history: RuntimeEvent[];
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// 目标：toolLoopBurstCount, lifecycleStage
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};
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```
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---
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## 8. 产物生命周期
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```text
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drafted → under_review → accepted | rejected | revision_requested
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accepted 前不得当下游事实
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```
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---
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## 9. 与编排表的关系
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**已废弃为主流程：** orchestrator「思维链 / 逐步编排表」驱动步骤。
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orchestrator 改为 **skill 注册表 + 验收策略**；阶段机不解析「第几步」。
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`semi_auto` / `pauseCheckpoint` 仍可作为可选策略，由 manifest 声明，第一版未实现。
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---
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## 10. 代码
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`src/runtime/phase-machine.ts` — 纯函数 `applyEvent`
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`src/runtime/phase-runtime.ts` — Session IO、tool loop 入口
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旧 11 态已合并为 5 phase + waitingReason。
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