refactor(agent): complete inbox lifecycle migration

packages/goal/goal/README.i18n.yaml

@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/goal/goal/README.md
-README.md: caf01b3d2a088281749a73b78b839d60ac041316
-README.zh.md: de92b8b9d7757f80511fe128644738ebe2458af1
+README.md: fc2a672c11c68ad72437251b087a274e1c4388d3
+README.zh.md: e84e8ea78039637a4b0bff7e97cef69ae607cda0

packages/goal/goal/README.md

@@ -39,7 +39,7 @@ Policy plugins call the service verbs and react to the scoped `goal/changed` eve
 
 #### What the model sees
 
-Goal mutations do not inject model context. Goal tools return the current state, and a continuation consumer may render the objective and round state when it schedules model work. A future always-visible goal context belongs in a separate context plugin rather than the persistence path.
+Goal mutations do not inject model context. Tools such as `get_goal` return the current state, and a continuation consumer may render the objective and round state when it schedules model work. A future always-visible goal context belongs in a separate context plugin rather than the persistence path.
 
 #### Token effect
 

packages/goal/goal/README.zh.md

@@ -39,7 +39,7 @@
 
 #### 模型看到的内容
 
-Goal 变更不会注入模型上下文。Goal 工具返回当前状态；继续执行消费方可以在调度模型工作时渲染目标描述与 Round 状态。未来如果需要始终可见的 goal 上下文，应由独立上下文插件实现，而不是放在持久化路径中。
+Goal 变更不会注入模型上下文。`get_goal` 等工具返回当前状态；继续执行消费方可以在调度模型工作时渲染目标描述与 Round 状态。未来如果需要始终可见的 goal 上下文，应由独立上下文插件实现，而不是放在持久化路径中。
 
 #### Token 影响
 

packages/goal/goal/tests/goal.spec.ts

@@ -43,6 +43,7 @@ function stubAgentForSession(session: Session): StubAgent {
     steer: () => {},
     inject(input) { inbox.append('next-step', input) },
     cancel() {},
+    runMaintenance: task => task(new AbortController().signal),
     whenIdle() { return Promise.resolve() },
   }
   return {

packages/goal/goal/tests/projection.spec.ts

@@ -46,6 +46,7 @@ function liveAgent(ctx: Context, session: Session): Agent {
       inbox.append('next-step', input)
     },
     cancel() {},
+    runMaintenance: task => task(new AbortController().signal),
     whenIdle() { return Promise.resolve() },
   }
   ctx.agents.register(agent)