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/index.zh.md

@@ -6,7 +6,7 @@ Cordis 是 DeepSeek Harness SDK 底层的插件框架：它是一个小型运行
 
 本教程面向 agent 开发者。你不需要深入掌握 TypeScript；下文的 [TypeScript 说明](#typescript-notes)会解释可能陌生的语法，并且每一章都会给出确切命令和预期输出。
 
-如果你想阅读精简的概念参考，而不是逐步实践，请参阅 [Cordis 入门](../cordis-primer.md)。详尽的 API 参考见生成的[事件](../cordis-catalog/events.md)与[服务](../cordis-catalog/services.md)目录，以及 [Cordis 核心 API](../cordis-catalog/core/context.md) 页面。
+如果你想阅读精简的概念参考，而不是逐步实践，请参阅 [Cordis 入门](../cordis-primer.md)。详尽的 API 参考见[子系统页面](../subsystems/core.md)上生成的 `cordis-surface` 区块，以及 [Cordis 核心 API](../cordis-api/context.md)页面。
 
 ## 准备工作