docs,feat(doc-gates): fix 15 dead anchor fragments; verify-md-links now validates fragments

A corpus sweep under the doc/prose standards found 15 links whose #fragment
named no anchor in its target — reworded headings, one relocated contract
(tool-fs → the group README's no-timeout rule), and zh sides citing English
slugs their Chinese headings never produce. Fixed all 15 (zh sides get the
conventional explicit <a id> + English fragment), fixed the one generator-owned
instance at its source (gen-doc-graphs), and extended verify-md-links to
resolve fragments onto Markdown targets — same-file anchors included — against
heading slugs and explicit <a id>, so the class is gated instead of manually
grepped. Remaining probes (narrated history, duplication shingles, comment
transcripts, budgets) came back clean; sibling-adapter README symmetry and
implemented-note contrasts are deliberate keeps.

packages/core/scope/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/core/scope/README.md
-README.md: 4f32573779a15e8c34b4936bfe75549dfc86d9f6
-README.zh.md: 16ec60a5489f909a46fd5f803dbf08490cd07988
+README.md: ecb442e39e40d5b97a07ccf8a71a190c4009ede8
+README.zh.md: f223d339129bcbef5c5f19ba6d0b453874944c4b

packages/core/scope/README.md

@@ -23,7 +23,7 @@ The optional `@deepseek-ai/dsh-scope/invariant` companion owns that runtime asse
 
 ## Design contract
 
-The registration context determines both visibility and ownership, preventing a registration from being visible in one scope but disposed with another. Scopes route trusted same-process plugins; they are not sandboxes or authority boundaries. See the [agent-scope Agent Note](../../../.agents/notes/implemented/architecture/2026-07-08-agent-scope-contexts.md#security-and-authority-are-explicit-non-goals) for rationale and security non-goals.
+The registration context determines both visibility and ownership, preventing a registration from being visible in one scope but disposed with another. Scopes route trusted same-process plugins; they are not sandboxes or authority boundaries. See the [agent-scope Agent Note](../../../.agents/notes/implemented/architecture/2026-07-08-agent-scope-contexts.md#security-and-authority-are-non-goals) for rationale and security non-goals.
 
 Scope-aware services define a concrete `ScopeLayer` that aggregates their heterogeneous tables and domain helpers. `ScopedLayers.effect()` accepts one synchronous action returning one synchronous undo, installs that undo before optional notification, and reclaims an exact-scope layer only when the complete aggregate is empty. `notify` defaults to `true`; the supplied callback owns whether observer failures throw or are contained. `EntryValues` remains internal, the storage classes are imported from the package root rather than a `/store` subpath, and the shared storage does not define registry-specific filtering or iteration policy. See the [shared scoped-layer storage Agent Note](../../../.agents/notes/implemented/architecture/2026-07-12-scoped-layers-store.md).
 

packages/core/scope/README.zh.md

@@ -23,7 +23,7 @@
 
 ## 设计契约
 
-注册上下文同时决定可见性和所有权，防止注册在一个作用域中可见、却随另一个作用域 dispose（资源释放）。作用域用于路由受信任的同进程插件；它们不是沙箱或权限边界。原理与明确排除的安全目标见 [agent 作用域 Agent Note](../../../.agents/notes/implemented/architecture/2026-07-08-agent-scope-contexts.md#security-and-authority-are-explicit-non-goals)。
+注册上下文同时决定可见性和所有权，防止注册在一个作用域中可见、却随另一个作用域 dispose（资源释放）。作用域用于路由受信任的同进程插件；它们不是沙箱或权限边界。原理与明确排除的安全目标见 [agent 作用域 Agent Note](../../../.agents/notes/implemented/architecture/2026-07-08-agent-scope-contexts.md#security-and-authority-are-non-goals)。
 
 感知作用域的服务会定义具体 `ScopeLayer`，聚合各自不同的表与领域辅助函数。`ScopedLayers.effect()` 接受一个返回同步撤销函数的同步动作，在可选通知前安装该撤销函数，并且只有在完整聚合为空时才回收精确作用域层。`notify` 默认为 `true`；由所提供的回调决定观测方失败是向外抛出还是在内部处理。`EntryValues` 保持内部可见；存储类从包根而非 `/store` 子路径导入；共享存储不定义注册表专属的筛选或迭代策略。详见[共享作用域层存储 Agent Note](../../../.agents/notes/implemented/architecture/2026-07-12-scoped-layers-store.md)。