docs: reserve seam for complete capabilities

packages/tasks/tasks/README.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 packages/tasks/tasks/README.md
-README.md: b5a7380e0cb7df5dd20baecea8656db2aad3460a
-README.zh.md: 5cbcfac8d7153616c39642c11860fc88b8495d1f
+README.md: 04ca125580104d0cb5ab0ce8cdd20d104c4a1668
+README.zh.md: b0b079566246549c7acab7a83fcc3c21c44ef868

packages/tasks/tasks/README.md

@@ -2,7 +2,7 @@
 
 English | [中文](README.zh.md)
 
-The background task registry seam (`ctx.tasks`). The abstract `TaskService` and its vocabulary types give long-running producers shared ids, owner isolation, reads, cancellation, waiting, notices, and cleanup under one contract; the process-local registry lives in [`dsh-tasks-local`](../tasks-local/README.md). Producer plugins extend `TaskKindMap` with their opaque id namespace.
+The background task registry contract (`ctx.tasks`). The abstract `TaskService` and its vocabulary types give long-running producers shared ids, owner isolation, reads, cancellation, waiting, notices, and cleanup under one contract; the process-local registry lives in [`dsh-tasks-local`](../tasks-local/README.md). Producer plugins extend `TaskKindMap` with their opaque id namespace.
 
 ## Service contract
 

packages/tasks/tasks/README.zh.md

@@ -2,7 +2,7 @@
 
 [English](README.md) | 中文
 
-后台任务注册表 seam（`ctx.tasks`）。抽象的 `TaskService` 及其词汇类型在同一份约定下为长时间运行的生产方提供共享 id、owner 隔离、读取、取消、等待、通知和清理；进程局部注册表位于 [`dsh-tasks-local`](../tasks-local/README.md)。生产方插件使用其不透明 id namespace 扩展 `TaskKindMap`。
+后台任务注册表约定（`ctx.tasks`）。抽象的 `TaskService` 及其词汇类型在同一份约定下为长时间运行的生产方提供共享 id、owner 隔离、读取、取消、等待、通知和清理；进程局部注册表位于 [`dsh-tasks-local`](../tasks-local/README.md)。生产方插件使用其不透明 id namespace 扩展 `TaskKindMap`。
 
 ## 服务约定
 

packages/tasks/tasks/src/index.ts

@@ -1,5 +1,5 @@
 /**
- * The background task registry seam (`ctx.tasks`). It owns the contract for
+ * The background-task Service Definition (`ctx.tasks`). It owns the contract for
  * task ids, session-scoped access, lifecycle state, completion listeners, and
  * owner cleanup while producers retain their execution resources. The
  * process-local registry lives in `@deepseek-ai/dsh-tasks-local`.

packages/tasks/tasks/tests/service.spec.ts

@@ -5,7 +5,7 @@ import { TaskId, TaskService } from '@deepseek-ai/dsh-tasks'
 import type { TaskDoneListener, TaskRead, TaskSnapshot, TaskStart } from '@deepseek-ai/dsh-tasks'
 
 /**
- * Minimal concrete registry: one canned record. The seam owns the contract
+ * Minimal concrete registry: one canned record. The Service Definition owns the contract
  * only (ids, snapshots, authorization-shaped signatures); the registry
  * behavior suite lives with `@deepseek-ai/dsh-tasks-local`.
  */