chore: remove remaining SDK toolchain residue

.agents/notes/implemented/feature/2026-07-21-continuable-background-subagents.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 .agents/notes/implemented/feature/2026-07-21-continuable-background-subagents.md
-2026-07-21-continuable-background-subagents.md: c1f60a4718a903e7dd55f5ccba3811aa3a0e9e81
-2026-07-21-continuable-background-subagents.zh.md: cc13c5eac98ebf687c180bdffb54a7540706e853
+2026-07-21-continuable-background-subagents.md: 06095e644f8c7e33ce262e2cb62c7f8622b4f405
+2026-07-21-continuable-background-subagents.zh.md: bcdfb67553ef7452e25fe56246f854092f720092

.agents/notes/implemented/feature/2026-07-21-continuable-background-subagents.md

@@ -111,8 +111,7 @@ Task records and active-run associations are process-local. Persistence makes th
 
 - `packages/subagent/subagent-inprocess/tests/subagent-inprocess.spec.ts` pins the continuable durability boundary: an absent or detached flush listener and a permanent listener failure reject with `DURABILITY_FAILED`, a transient loop-checkpoint failure can succeed on the final confirmation, cancellation owns either final-checkpoint outcome, resume also confirms durability, and foreground runs remain best-effort. `packages/subagent/subagent/tests/continuation.spec.ts` drives the real stack (agent loop, JSONL persistence, spawn/fork providers, Task service, and `ctx.subagents`) keylessly: initial and resumed activations create fresh Tasks and dispose their runs before terminal; the descriptor event is pre-turn, model-hidden, versioned, durable under the service-allocated child id, and survives blocked or throwing initial prompt admission; cancellation, steering, cold follow-up, authorization, ownership conflicts, and resume races retain the contracts described above.
 - `packages/subagent/tool-subagent-control/tests/tool-subagent-control.spec.ts` pins the `send_message` schema, coordinator attribution, both route renderings, the not-delivered failure, the no-agent rejection, and HMR disposal.
-- `packages/subagent/tool-subagent/tests/tool-subagent.spec.ts` covers the configured background route: continuable mode requires a resumable provider and returns both ids without requiring `send_message`, while one-shot mode keeps the plain Task acknowledgement even when the provider can resume.
-- `packages/subagent/tool-subagent/tests/tool-subagent.spec.ts` pins Task service integration and the model-facing Task controls.
+- `packages/subagent/tool-subagent/tests/tool-subagent.spec.ts` covers the configured background route: continuable mode requires a resumable provider and returns both ids without requiring `send_message`, while one-shot mode keeps the plain Task acknowledgement even when the provider can resume; it also pins Task service integration and the model-facing Task controls.
 - The keyless ACP snapshot scenario `subagent-continuable` (examples/acp-agent) pins the model-visible transcript: the two-id acknowledgement, a final durability-confirmation failure rendered through `task_output` without unconfirmed child output, and a `send_message` follow-up whose started Task fails with the id unavailable.
 
 ## Consequences

.agents/notes/implemented/feature/2026-07-21-continuable-background-subagents.zh.md

@@ -111,8 +111,7 @@ Task 记录和活跃 run 关联都位于进程内。持久化使 child 会话可
 
 - `packages/subagent/subagent-inprocess/tests/subagent-inprocess.spec.ts` 固定可继续执行的持久性边界：缺少 flush 监听器、flush 监听器已脱离或监听器持续失败时，均会以 `DURABILITY_FAILED` 拒绝；循环检查点的瞬时失败可在最终确认成功后继续完成，发生取消时最终检查点无论成功还是失败都由取消优先决定结果，resume 同样会确认持久性，而前台运行仍采用尽力而为策略。`packages/subagent/subagent/tests/continuation.spec.ts` 以无密钥方式驱动真实栈（agent loop、JSONL 持久化、spawn／fork 提供方、Task 服务和 `ctx.subagents`）：初始及恢复后的激活都会创建新 Task，并在进入终态前 dispose 各自的 run；描述符事件位于轮次前、对模型隐藏、带版本、在服务分配的 child id 下持久化，并在初始 prompt admission 阻止请求或抛出异常时仍保留；取消、steering、cold follow-up、授权、所有权冲突与 resume 竞态保留上述约定。
 - `packages/subagent/tool-subagent-control/tests/tool-subagent-control.spec.ts` 固定 `send_message` 的 schema、coordinator 来源标记、两种路由渲染、未送达失败、无 agent 时的拒绝，以及 HMR（热模块替换）dispose。
-- `packages/subagent/tool-subagent/tests/tool-subagent.spec.ts` 覆盖配置的后台路由：可继续模式要求提供方可恢复，并在不要求 `send_message` 的情况下返回两个 id；即使提供方可以恢复，一次性模式仍保持普通的 Task 确认消息。
-- `packages/subagent/tool-subagent/tests/tool-subagent.spec.ts` 固定 Task 服务集成及面向模型的 Task 控制工具。
+- `packages/subagent/tool-subagent/tests/tool-subagent.spec.ts` 覆盖配置的后台路由：可继续模式要求提供方可恢复，并在不要求 `send_message` 的情况下返回两个 id；即使提供方可以恢复，一次性模式仍保持普通的 Task 确认消息；它还固定 Task 服务集成及面向模型的 Task 控制工具。
 - 无密钥 ACP 快照场景 `subagent-continuable`（examples/acp-agent）固定模型可见的 transcript：双 id 确认消息、最终持久性确认失败（该失败通过 `task_output` 呈现，且不包含未经确认的 child 输出），以及一次 `send_message` 后续操作——其已启动的 Task 会带着「id 不可用」失败。
 
 ## 影响