fix(schedule): preserve resumed ancestor receipts

.agents/notes/implemented/feature/2026-08-05-durable-web-schedule.md

@@ -49,7 +49,7 @@ Agent or plugin disposal cancels timers, stops new work, unwinds the three tool
 
 ### Commit-aware Web receipt
 
-The Schedule package owns `scheduleReminderPresentation()`, which derives `{ scheduleId, prompt, occurrenceAt, deliveryMode }` from create plus dispatch. A dispatch inside an inherited fork prefix folds from its nearest preceding `session/end-seed` boundary, preserving nested-generation id reuse; a child-owned dispatch folds only the child suffix. Presentation therefore never changes live ownership.
+The Schedule package owns `scheduleReminderPresentation()`, which derives `{ scheduleId, prompt, occurrenceAt, deliveryMode }` from create plus dispatch. The current fork's `seedLength` is a hard boundary for child-owned dispatches. An inherited dispatch instead pairs with its nearest preceding same-id create because `session/end-seed` also marks replay or resume construction, not only fork ownership. This keeps resumed ancestor receipts renderable, preserves nested-generation id reuse, and never changes live ownership.
 
 The Host continues to send every raw event on append. It keeps one monotonic watermark per exact live `Session` in a `WeakMap`; only `session/flushed` advancement makes it redeliver newly covered dispatch events with the generic `{ for: 'event', view }` sidecar. The durable `schedule/change` type selects the client renderer. Taking the maximum contains reversed concurrent flush completion, and exact object identity prevents a reused Session id from inheriting another lifecycle's cursor.
 

.agents/notes/implemented/feature/2026-08-05-durable-web-schedule.zh.md

@@ -49,7 +49,7 @@ Agent 或插件 dispose 会取消 timer、停止新工作、撤销三个工具
 
 ### Commit-aware Web 回执
 
-Schedule package 拥有 `scheduleReminderPresentation()`，从 create 加 dispatch 派生 `{ scheduleId, prompt, occurrenceAt, deliveryMode }`。位于继承 fork 前缀中的 dispatch 会从其最近的前置 `session/end-seed` 边界开始折叠，保留嵌套 generation 的 id 复用；child 自有 dispatch 只折叠 child 后缀。因此 presentation 永远不会改变 live ownership。
+Schedule package 拥有 `scheduleReminderPresentation()`，从 create 加 dispatch 派生 `{ scheduleId, prompt, occurrenceAt, deliveryMode }`。当前 fork 的 `seedLength` 是 child 自有 dispatch 的硬边界。继承的 dispatch 则会与它之前最近的同 id create 配对，因为 `session/end-seed` 也会标记回放或恢复构造，而不仅标记 fork 所有权。这使恢复后的祖先回执仍可渲染，保留嵌套 generation 的 id 复用，并且绝不会改变 live ownership。
 
 Host 在 append 时继续发送所有 raw event。它在 `WeakMap` 中按 exact live `Session` 保存一个单调 watermark；只有 `session/flushed` 前进时，才会用通用 `{ for: 'event', view }` sidecar 重投新覆盖的 dispatch event。持久 `schedule/change` 类型用于选择 client renderer。取最大值可以收容反序完成的并发 flush，按对象身份键控则阻止复用的 Session id 继承另一个生命周期的 cursor。