docs(notes): record the parent-only-override snapshot path and pickup shape

The snapshot-coverage consequence names the deployment-strength limit, why
the automation protocol cannot express a parent-only override, and the
headless semantic-checkpoint precedent (seeded parent log + resume fixture
plugin) as the pickup shape — so the deferred scenario is not re-derived.

.agents/notes/implemented/feature/2026-07-25-subagent-policy-inheritance.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
-2026-07-25-subagent-policy-inheritance.md: 11086232bfe6a81ce5579d9459187f2931b6e387
-2026-07-25-subagent-policy-inheritance.zh.md: 63b2ebb2373b7a94f1b630df98b38325a045b9c0
+2026-07-25-subagent-policy-inheritance.md: 8609fee90f3f9ea73f5e6229a38cde5e61337144
+2026-07-25-subagent-policy-inheritance.zh.md: ad1b4650348154d82473b17d920dff475833f00e

.agents/notes/implemented/feature/2026-07-25-subagent-policy-inheritance.md

@@ -34,4 +34,5 @@ A confined child that hits the wall gets the ordinary denial marker; an escalati
 - A parent's tightened sandbox mode and `'never'` approval stance now bind spawn children, fork children (regardless of seed timing), and grandchildren; the delegation bypass is closed at every depth, with no first-turn timing window (veto, injection, crash). Pinned by the real-wall suite in `packages/subagent/subagent-inprocess/tests/inheritance.spec.ts` (a scripted-model child hitting the real `dsh-fs-sandbox` fence through the real `write` tool, asserted on disk state and denial markers — including the delegation-vs-late-switch race, a veto-capable prompt-submit listener, and header durability before any child turn) and the `overrideOf` contract tests in the two service suites (baseline read, seed-boundary precedence, closed-vocabulary rejection).
 - The baseline rides `SessionHeader` through both persistence backends (a JSONL header-line field; SQLite `sessions` columns with `SCHEMA_VERSION` bumped to 11 — pre-release, no migration), so resume restores it like `delegationDepth`; the child may later be switched independently, its own post-seed events outranking the baseline.
 - Accepted limits: a parent switch made while a child is already running does not propagate (snapshot semantics); out-of-process backends (`subagent-acp`, subprocess children) inherit nothing here — their policy belongs to the child harness's own deployment, the sandbox Agent Note's deferred phase.
+- Snapshot coverage runs at deployment strength only: the recorded `subagent-sandbox-inheritance` scenario proves a delegated child confined under a read-only DEPLOYMENT policy through the assembled ACP app, but the automation-only protocol has no session-scoped switch, so a parent-ONLY override (wider default, tightened parent, denied child) is not expressible there. When picked up, the shape is the headless suite's semantic-checkpoint precedent: seed a persisted parent log carrying a real `sandbox/mode` switch, resume it through the Loader-booted cli-demo app via a resume fixture plugin, and let it delegate — a scenario-harness addition (the headless suite has no subagent+sandbox overlay yet), not a new mechanism.
 - `dsh-subagent-inprocess` declares `dsh-sandbox-policy` and `dsh-user-approval` as peers for the `ctx.get` typing; both remain runtime-optional. `SessionHeader` gains two neutral optional string fields; `SESSION_FORMAT_VERSION` stays 0 (additive, pre-release).

.agents/notes/implemented/feature/2026-07-25-subagent-policy-inheritance.zh.md

@@ -34,4 +34,5 @@ Status: implemented
 - 父级收紧后的沙箱模式与 `'never'` 审批立场现在会约束 spawn 子 agent、fork 子 agent（无论种子时机如何）与孙代 agent；委派旁路在每一层深度都已封死，且不存在任何第一轮次的时序窗口（否决、注入、崩溃）。该行为由 `packages/subagent/subagent-inprocess/tests/inheritance.spec.ts` 中的真实围栏测试套件钉住（脚本化模型驱动的子 agent 通过真实 `write` 工具撞上真实的 `dsh-fs-sandbox` 围栏，按落盘状态与拒绝标记断言——其中包括委派与延迟切换之间的竞态用例、一个具备否决能力的 prompt-submit 监听器用例，以及子 agent 任何轮次开始前的会话头持久性用例），并由两个服务各自测试套件中的 `overrideOf` 契约测试钉住（基线读取、种子边界优先级、封闭词汇拒绝）。
 - 基线随 `SessionHeader` 通过两个持久化后端存储（JSONL 头部行字段；SQLite `sessions` 表中的列，`SCHEMA_VERSION` 提升到 11——预发布阶段，无迁移），因此恢复时它像 `delegationDepth` 一样被还原；子 agent 之后仍可被独立切换，其自身种子之后的事件优先于基线。
 - 已接受的限制：子 agent 已在运行时父级再做的切换不会传播（快照语义）；进程外后端（`subagent-acp`、子进程形态的子 agent）在这里不继承任何内容：它们的策略归子 harness 自身的部署所有，属于沙箱 Agent Note 中延后的阶段。
+- 快照覆盖只运行在部署强度上：已录制的 `subagent-sandbox-inheritance` 场景经由组装后的 ACP 应用，证明了一个被委派的子 agent 被约束在只读的部署级策略之下，但这个仅面向自动化的协议没有会话作用域的切换，因此仅父级的覆盖项（更宽的默认值、收紧的父级、被拒的子 agent）在该协议上无法表达。待接手时，其形态沿用 headless 套件的语义检查点先例：预置一份携带真实 `sandbox/mode` 切换的已持久化父级日志，经由一个恢复用的 fixture（测试前置数据）插件在 Loader 启动的 cli-demo 应用中恢复它，再让它发起委派——这是一次场景 harness 的扩充（headless 套件尚无 subagent+沙箱 overlay），而非新机制。
 - `dsh-subagent-inprocess` 将 `dsh-sandbox-policy` 与 `dsh-user-approval` 声明为对等依赖（peer dependency），以支撑 `ctx.get` 的类型；两者在运行时仍然可选。`SessionHeader` 新增两个中性的可选字符串字段；`SESSION_FORMAT_VERSION` 保持为 0（仅新增字段，预发布阶段）。