build(vendor): rescope the vendored Cordis packages into @deepseek-ai

Machine-produced by `pnpm run rescope-vendor --apply` plus the regeneration it
prints: `pnpm install` for the lockfile, `pnpm run gen-third-party-notices`,
`verify-translation-pairing --write` for the touched bilingual pairs,
`gen-doc-graphs`, and one typert snapshot whose ids embed character offsets.
`pnpm run rescope-vendor --check` verifies the result.

Renames nine vendored packages (cordis, cosmokit, schemastery and the six
@cordisjs plugins) and every reference that resolves them: manifest names and
dependency keys, module specifiers including declare-module merges, cordis.yml
plugin names, tsconfig paths, every Markdown fence, and `docs/` prose.
Directory names, upstream versions, and dependency ranges are unchanged, so
vendor/README.md still reads as an upstream snapshot; its manifest table gains
an upstream-name column so THIRD_PARTY_NOTICES keeps MIT attribution pointed
at each fork's origin.

The tutorial tier follows the rename end to end: its yaml fences named plugins
the Loader can no longer resolve, its `ts ignore-check` fences disagreed with
the compiled fences beside them, and its prose quoted both. The contracts that
told readers to keep upstream names — the root convention and the vendoring
cookbook's tree comment and manifest invariant — now say to rescope instead.

Two rules read `@deepseek-ai/` as "another workspace plugin": the client bundle
purity gate now names the vendored libraries a browser bundle inlines, and the
files where a bare `cordis` is an agent-preset id keep that product data.

packages/client/modules/src/client/index.ts

@@ -9,7 +9,7 @@
  * a no-op against the already-registered entry.
  * @module @deepseek-ai/dsh-client-modules/client
  */
-import type { Context } from 'cordis'
+import type { Context } from '@deepseek-ai/cordis'
 import type { DshWindow } from './manifest.ts'
 
 export { ClientModuleSystem } from './system.ts'

packages/client/modules/src/client/manifest.ts

@@ -30,10 +30,10 @@
  * composes the wire.
  */
 
-import type {} from 'cordis'
+import type {} from '@deepseek-ai/cordis'
 import type { ClientModuleSystem } from './system.ts'
 
-declare module 'cordis' {
+declare module '@deepseek-ai/cordis' {
   interface Context {
     /** The client module system the web shell builds at boot (provided by the `./client` wrapper plugin). */
     modules: ClientModuleLoader

packages/client/modules/src/index.ts

@@ -26,9 +26,9 @@ import { readFile } from 'node:fs/promises'
 import type { IncomingMessage, ServerResponse } from 'node:http'
 import { createRequire } from 'node:module'
 import { dirname, join } from 'node:path'
-import { Service } from 'cordis'
-import type { Context } from 'cordis'
-import type {} from '@cordisjs/plugin-loader'
+import { Service } from '@deepseek-ai/cordis'
+import type { Context } from '@deepseek-ai/cordis'
+import type {} from '@deepseek-ai/cordis-plugin-loader'
 import type {} from '@deepseek-ai/dsh-host-webserver'
 import type { WebBootEntry, WebBootGraph } from './client/manifest.ts'
 
@@ -36,7 +36,7 @@ export type {
   BootManifest, BootModuleRow, BootPluginRow, WebBootEntry, WebBootGraph,
 } from './client/manifest.ts'
 
-declare module 'cordis' {
+declare module '@deepseek-ai/cordis' {
   interface Context {
     /** The web plugin table (provided by the client-modules node half). */
     clientModuleHost: ClientModuleHostService

packages/client/modules/src/invariant.ts

@@ -4,7 +4,7 @@
  */
 
 /* jscpd:ignore-start */
-import type { Context } from 'cordis'
+import type { Context } from '@deepseek-ai/cordis'
 import type { InvariantInstaller } from '@deepseek-ai/dsh-invariants'
 
 const PACKAGE_NAME = '@deepseek-ai/dsh-client-modules'