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.

docs/cordis-tutorial/07-into-the-harness.zh.md

@@ -101,7 +101,7 @@ logger 会先触发：`tools/result` 在结果物化过程中发出，发生在
 
 - [构建工具](../user/develop/basic/tool.md)：深入了解 `defineTool`，包括呈现和更丰富的 schema。
 - [三层能力设计](../user/develop/practice/index.md)：harness 如何组织可替换能力。
-- 生成的[服务](../cordis-catalog/services.md)与[事件](../cordis-catalog/events.md)目录：可以注入和监听的所有内容。
+- [子系统页面](../subsystems/core.md)上生成的 `cordis-surface` 区块：可以注入和监听的所有内容，各在其所属页面上。
 - [架构](../architecture.md)：这些插件所处的系统地图。
 
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