docs: generate each subsystem's cordis surface into its own page; delete the flat catalogs

Rebuild of the region machinery (PR3) on the post-#904 Typert projection:
renderPageRegion/renderInheritedPage live in dsh-typert-generator beside the
projection; scripts/gen-cordis-catalog.ts owns the curated SERVICE_PAGE /
EVENT_SCOPE_PAGE / SERVICE_WALK_EXEMPTIONS / LINK_MAP partition (fail-loud in
both directions, with the independent Context-merge scan backstopping the
projection's blind spot), spliceRegion, and the guarded pair auto-record.
docs/cordis-catalog/ is deleted: the flat events/services catalogs dissolve
into per-page regions and docs/cordis-catalog/core moves to docs/cordis-api/
with the inherited tier as its own generated page. The partition absorbs the
post-regrouping surface: ctx.typert → invariants.md, ctx.directoryPicker →
workspace.md, skills/* events → skills.md, and the four launcher-provided tui
accessor values join the named exemptions.

.agents/notes/implemented/architecture/2026-07-08-agent-scope-contexts.zh.md

@@ -104,7 +104,7 @@ setup 接收一个完整的受信 Cordis 上下文，因此可以组合普通插
 
 在 Cordis 层面，`Scoped<T>` 是一个不透明的路由接收器。它携带用于选择监听器的过滤器，但本身不是领域对象。因此事件签名将真实的 `Agent`、工具执行、审批请求或其他主体作为显式参数保留，供监听器检查。
 
-以 `{ global: true }` 注册的监听器有意绕过上下文受众过滤，但其清理仍跟随注册上下文。注册表成员变更通知保持不过滤，因为它们描述的是共享注册表状态而非某个 agent 的操作。生成的[事件目录](../../../../docs/cordis-catalog/events.md)是详尽的事件参考。
+以 `{ global: true }` 注册的监听器有意绕过上下文受众过滤，但其清理仍跟随注册上下文。注册表成员变更通知保持不过滤，因为它们描述的是共享注册表状态而非某个 agent 的操作。详尽的事件参考是各[子系统页面](../../../../docs/subsystems/core.md)上生成的 `cordis-surface` 区块的集合——每个事件作用域在其所属页面上（`agent/*` 与 `agent-loop/*` 在 core.md 本页）。
 
 ### 创建最后发布，dispose 最后撤销