fix(tasks): claim the teardown report before the producer cancel runs

A throwing producer cancel jumped to the force-fail branch before
`reported` was set, so `settle()` announced an unreported completion and
the default wakeup delivery started a model turn on an owner the host
was already destroying — the exact failure mode marking the record
reported exists to prevent.

Teardown claims the report before calling the producer, because that
decision does not depend on whether the producer's cancel succeeds.

Also reject a `maxConsecutiveWakes` that cannot bound anything: the
field exists to cap a runaway chain, and `Infinity` removed the cap
while a fraction never named a turn.

Correct the module JSDoc and the background-task runtime note, both of
which still promised that notices never wake an idle agent.

.agents/notes/implemented/architecture/2026-06-20-generic-long-running-tool-runtime.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/architecture/2026-06-20-generic-long-running-tool-runtime.md
-2026-06-20-generic-long-running-tool-runtime.md: 457eaac7de92ea37287803349672271148d59185
-2026-06-20-generic-long-running-tool-runtime.zh.md: 9a86c4cf2b49973212adfd4b9acdb54150af01d1
+2026-06-20-generic-long-running-tool-runtime.md: c34d0708ee88b94fcf9b9294fe002a9c3e081cfd
+2026-06-20-generic-long-running-tool-runtime.zh.md: 311fd271ccbd139f7d82270eb56e2471a34a4bb3

.agents/notes/implemented/architecture/2026-06-20-generic-long-running-tool-runtime.md

@@ -77,7 +77,7 @@ A producer loaded without any controller would let callers start work they canno
 
 Stream reads share one task-scoped consuming cursor because the owning model is the intended reader. A UI or multiple independent readers need a separate non-consuming observation API; sharing this cursor would let readers consume one another's output.
 
-The system prompt tells the model to retain task ids, continue independent work instead of busy-polling or duplicating a running task, collect relevant tasks before its final answer, and kill work that no longer matters. Completion injects a logged `context/message` into the exact owner's session; it becomes durable context for the next request but does not wake an idle agent.
+The system prompt tells the model to retain task ids, continue independent work instead of busy-polling or duplicating a running task, collect relevant tasks before its final answer, and kill work that no longer matters. Completion delivers a logged message to the exact owner's session. A busy owner is injected; an idle owner is woken, under the bounded policy the [idle-owner wake decision](../feature/2026-08-11-background-task-completion-wakes-an-idle-owner.md) owns.
 
 The runtime marks a terminal task `reported` when a read or wait delivers it, when a live waiter has claimed delivery at settlement, or when the model explicitly kills it. Reported tasks do not inject redundant completion notices. Listener failures are logged independently, do not stop later listeners, and are not awaited by waiters or teardown. When a snapshot carries `outputLimitBytes`, `dsh-tool-tasks` preserves UTF-8 boundaries and reuses an existing producer truncation marker rather than duplicating it. Reads reserve status suffixes and retain the output tail; completion notices reserve the stable `background task <id>` prefix and `task_output` instruction before truncating variable kind, label, status, detail, or the truncation marker itself, so the minimum PTY cap still identifies the task to collect. The task controller resolves the caller-visible producer cap in a prepended pre-execute listener before policy can deny or short-circuit dispatch, then applies it through the task definitions' last-mile `finalizeContent` callback so normalized tool errors, outer pipeline failures, and single-text policy results cannot escape the bound; deliberately structured multi-block policy results retain policy ownership of their shape and size.
 
@@ -131,4 +131,4 @@ Unit coverage pins preflight atomicity, per-kind ids, output-limit validation an
 
 Bash commands and subagents share one id vocabulary, listing, notice format, prompt habit, and set of control tools. New long-running producers implement execution hooks instead of another registry and tool family. The [tool cookbook](../../../../docs/cookbook/adding-a-tool.md) points producers to this contract.
 
-Owned background bash now stops with its agent instead of surviving it. Background processes have no executor timeout; callers must kill irrelevant work or rely on owner/service disposal. Stream reads support one consuming reader, completion notices do not wake idle agents, and a producer that returns from `cancel` without settling `done` can still stall teardown. Durable jobs, independent observation cursors, and foreground promotion remain separate designs.
+Owned background bash now stops with its agent instead of surviving it. Background processes have no executor timeout; callers must kill irrelevant work or rely on owner/service disposal. Stream reads support one consuming reader, and a producer that returns from `cancel` without settling `done` can still stall teardown. Durable jobs, independent observation cursors, and foreground promotion remain separate designs.

.agents/notes/implemented/architecture/2026-06-20-generic-long-running-tool-runtime.zh.md

@@ -77,7 +77,7 @@ task id 在运行时全局可见且可预测，因此注册表会授权每次访
 
 流式读取共享一个任务作用域内的消费游标，因为所属模型是预期读取方。UI 或多个独立读取方需要单独的非消费式观察 API；共享该游标会让读取方彼此消费对方的输出。
 
-系统提示词要求模型保留 task id、在后台工作运行时继续处理独立工作而非忙轮询或重复启动同一任务、在给出最终答案前收集相关任务，并终止不再重要的工作。完成时，系统会向确切所有者的会话注入一条已记录的 `context/message`；它会成为下一个请求的持久上下文，但不会唤醒空闲的 agent。
+系统提示词要求模型保留 task id、在后台工作运行时继续处理独立工作而非忙轮询或重复启动同一任务、在给出最终答案前收集相关任务，并终止不再重要的工作。完成时，系统会向确切所有者的会话交付一条已记录的消息：繁忙的所有者走注入，空闲的所有者会被唤醒，其有界策略由[空闲所有者唤醒决策](../feature/2026-08-11-background-task-completion-wakes-an-idle-owner.md)负责。
 
 当读取或等待交付终止任务、实时等待方在结算时认领了投递，或模型显式终止任务时，运行时将终止任务标为 `reported`。已报告的任务不会注入冗余的完成通知。监听器失败会独立记录，不会阻止后续监听器，也不会被等待方或资源销毁过程等待。当快照携带 `outputLimitBytes` 时，`dsh-tool-tasks` 会保持 UTF-8 边界，并复用生产方已有的截断标记，而不会重复添加。读取会为状态后缀预留空间并保留输出尾部；完成通知会先为稳定的 `background task <id>` 前缀与 `task_output` 指令预留空间，再截断可变的 kind、label、status、detail，乃至截断标记本身，因此 PTY 的最小上限仍能标识需要收集的任务。任务控制器在策略有机会拒绝或短路分发之前，于最先执行的 pre-execute 监听器中解析调用方可见的生产方上限；随后通过任务定义最后一道的 `finalizeContent` 回调应用该上限，使规范化的工具错误、外层流水线失败与单文本策略结果都无法绕过该边界；经特意结构化的多块策略结果仍由策略拥有其形状与大小。
 
@@ -131,4 +131,4 @@ bash seam 暴露 `resolve`、`run` 和 `start`。`start(spec)` 返回一个 `Bas
 
 bash 命令与 subagent 共享一套 id 词汇、列表、通知格式、提示词习惯和控制工具。新的长时间运行生产方只需实现执行钩子，而不必再实现一套注册表与工具族。[工具实操手册](../../../../docs/cookbook/adding-a-tool.md)将生产方指向本约定。
 
-有所属后台 bash 会随其 agent 一起停止，不再比 agent 存活更久。后台进程没有执行器超时；调用方必须终止无关工作，或依赖所有者/服务释放。流式读取只支持一个消费方，完成通知不会唤醒空闲 agent；生产方的 `cancel` 返回后如果未使 `done` 完成，仍可能阻塞资源销毁。持久任务、独立观察游标和前台提升仍属于单独设计。
+有所属后台 bash 会随其 agent 一起停止，不再比 agent 存活更久。后台进程没有执行器超时；调用方必须终止无关工作，或依赖所有者/服务释放。流式读取只支持一个消费方；生产方的 `cancel` 返回后如果未使 `done` 完成，仍可能阻塞资源销毁。持久任务、独立观察游标和前台提升仍属于单独设计。