diff --git a/docs/architecture/rfcs/ledger/shared-goal-authority-state-provider-v0/2026-09-28-retirement-cadence.md b/docs/architecture/rfcs/ledger/shared-goal-authority-state-provider-v0/2026-09-28-retirement-cadence.md
index df8baf167d..e08476a4ad 100644
--- a/docs/architecture/rfcs/ledger/shared-goal-authority-state-provider-v0/2026-09-28-retirement-cadence.md
+++ b/docs/architecture/rfcs/ledger/shared-goal-authority-state-provider-v0/2026-09-28-retirement-cadence.md
@@ -113,6 +113,37 @@ policy editing remains outside this slice; existing Lark actions read canonical
 state. Next: qualified creation/upgrade callers and authorized Goal adoption,
 then delete live legacy branches at their last callers.
 
+### Installed delegation boundary at `9ac4efa90`
+
+A macOS arm64 installation from that merged source aligns the CLI, rebuilt App
+bundle and restarted Chat/Status services. The served HTML matches the installed
+bundle; both current entry assets and all 14 assets from the preceding delivery
+remain readable. This is process/HTTP readback, not a full GUI interaction test.
+
+An independently staged installation exercises real File/SQLite stores, actual
+CLI subprocesses and a deterministic generic Host process: six final-acceptance
+renewal/lost-reply cases, four expired/replaced-execution rejection cases, and
+four last-Todo completion→controller-replan cases pass. Loaded LoopX modules are
+checked against the installed snapshot. The first run had 9 passes and 5 failures:
+a short setup lease preempted one intended negative case; an extension of the
+Markdown fixture incorrectly expected a changed canonical completion intent to
+replay. The corrected fixture loses authority at the tested boundary, requires
+changed-intent rejection, and verifies original Turn resume without new effects.
+All affected cases were rerun; the failures are not counted as product successes.
+
+The adjacent source regression now starts its 20-second Host lease at managed
+execution dispatch. A matched 22-second delay after fixture preparation rejected
+the old execution before Host start; the corrected fixture reaches real renewal,
+completion and lost-reply replay. Lease identity, expiry rejection and the
+existing runtime and validation budgets remain unchanged.
+
+This closes this bounded installed #5466 path. It does not qualify live model
+providers, interrupted-Host stop acknowledgement, Windows, full Goal recovery,
+formal D2, release defaults or last-writer retirement. No active Goal provider or
+ownership mode changes are part of this installation. Keep those existing exits;
+recovery observation and File decode measurements retain their separate evidence
+below.
+
 ### Ordered delivery packages and exits
 
 | Package / existing owner | Work and decisive exit | Dependency / deletion / schedule |
diff --git a/docs/architecture/rfcs/ledger/shared-goal-authority-state-provider-v0/2026-09-28-retirement-cadence.zh-CN.md b/docs/architecture/rfcs/ledger/shared-goal-authority-state-provider-v0/2026-09-28-retirement-cadence.zh-CN.md
index 8ec905adae..6f5f8b2855 100644
--- a/docs/architecture/rfcs/ledger/shared-goal-authority-state-provider-v0/2026-09-28-retirement-cadence.zh-CN.md
+++ b/docs/architecture/rfcs/ledger/shared-goal-authority-state-provider-v0/2026-09-28-retirement-cadence.zh-CN.md
@@ -96,6 +96,29 @@ HTTP 路径覆盖 metadata 保留、过期源、跨 Goal／摘要拒绝、过期
 编辑不在本批，既有飞书操作仍读 canonical 状态。下一步验收创建／升级调用方并
 逐 Goal 按授权采用，再按最后调用方删除活跃 legacy 分支。
 
+### `9ac4efa90` 的安装态委派边界
+
+macOS arm64 上，以该合并源码对齐 CLI、重新构建的 App 和重启后的 Chat/Status
+服务。实际返回的 HTML 与安装包一致，当前两个入口资源及上一份交付的 14 个资源
+均可读取。这是进程和 HTTP 读回，不是完整 GUI 交互验收。
+
+独立安装副本通过真实 File/SQLite store、CLI 子进程和确定性的 generic Host 进程
+运行：6 个最终验收续租／回执丢失场景、4 个过期／替换执行拒绝场景，以及 4 个最后
+Todo 完成→controller replan 场景均通过；加载的 LoopX 模块确实来自安装快照。
+第一轮 9 通过、5 失败：一个负例被无关的短准备租约提前打断；从 Markdown 夹具扩展
+的检查错误地期待 canonical 完成请求改变意图后仍可重放。修正后在目标阶段主动撤销
+权威、要求不同意图被拒绝，并验证原 Turn 恢复不产生新效果。所有受影响场景已重跑，
+不把初次失败算成产品成功。
+
+相邻源码回归现在从受管执行发起时开始 20 秒 Host 租约计时。同样在准备完成后
+延迟 22 秒，旧夹具会在 Host 启动前拒绝执行；修正后进入真实续租、完成及丢响应
+重放。租约身份、过期拒绝以及既有运行／验收预算均保持不变。
+
+该结果关闭 #5466 的这条有界安装路径，不认证真实模型 provider、中断 Host 停止确认、
+Windows、整 Goal 恢复、正式 D2、发布默认或最后 writer 退役。此次安装没有改变活跃
+Goal 的 provider 或所有权策略；继续保留这些已有出口。恢复结果查询和 File 解码
+测量仍按下方各自证据记录。
+
 ### 有依赖顺序的交付包与出口
 
 | 交付包／既有 owner | 要做什么、凭什么完成 | 依赖／删除机会／节奏 |
diff --git a/tests/test_delegation_lease_lifetime.py b/tests/test_delegation_lease_lifetime.py
index e47deab6f9..09d48e6748 100644
--- a/tests/test_delegation_lease_lifetime.py
+++ b/tests/test_delegation_lease_lifetime.py
@@ -41,14 +41,32 @@ def prepare_lease(root, runner, monkeypatch, *, ttl=20):
     assert prepared.returncode == 0, prepared.stderr
     binding = runner.binding("analysis")
     runner._acquire_delegation_lease(runner.path("lease-lifetime"), row, binding)
-    lease = row["task_lease"]["lease"]
+    lease = dict(row["task_lease"]["lease"])
     if ttl is None:
         return lease
-    renewed = runner._cli(binding, "task-lease", "renew", "--goal-id", runner.goal_id,
-        "--todo-id", binding["todo_id"], "--owner", binding["agent_id"],
-        "--idempotency-key", lease["idempotency_key"], "--expected-version", str(lease["version"]),
-        "--ttl-seconds", str(ttl))
-    return renewed["lease"]
+    # Start the short lifetime at managed execution, not before acceptance
+    # preparation. Cold setup may outlast 20s without exercising Host renewal.
+    cli = runner._cli
+    shortened = False
+
+    def at_launch(binding, *args, **kwargs):
+        nonlocal shortened
+        if args[:2] == ("turn", "run-once") and not shortened:
+            context = kwargs["delegated_lease"]
+            renewed = cli(binding, "task-lease", "renew", "--goal-id", runner.goal_id,
+                "--todo-id", binding["todo_id"], "--owner", binding["agent_id"],
+                "--idempotency-key", lease["idempotency_key"],
+                "--expected-version", str(context["lease"]["version"]), "--ttl-seconds", str(ttl))
+            proof = renewed["lease"]
+            assert (proof["owner"], proof["idempotency_key"], proof["lease_epoch"]) == (
+                lease["owner"], lease["idempotency_key"], lease["lease_epoch"])
+            lease.update(proof)
+            kwargs["delegated_lease"] = {**context, "lease": proof}
+            shortened = True
+        return cli(binding, *args, **kwargs)
+
+    monkeypatch.setattr(runner, "_cli", at_launch)
+    return lease
 
 
 def inspect(runner):
@@ -167,7 +185,9 @@ def observe_reply(binding, *args, **kwargs):
 @pytest.mark.parametrize("authority_loss", ["expiry", "replacement"])
 def test_completion_renewal_receipt_cannot_revive_lost_execution(service, monkeypatch, authority_loss):
     root, runner = service
-    prepare_lease(root, runner, monkeypatch)
+    # Lose authority explicitly after the completion-renewal reply below.
+    # A short Host startup lease could stop execution before that boundary.
+    prepare_lease(root, runner, monkeypatch, ttl=None)
     cli = runner._cli
     dropped = False
     completions = []