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/host/directory-picker-native/package.json

@@ -44,7 +44,7 @@
     "@deepseek-ai/dsh-client-ui-slots": "^0.0.1",
     "@deepseek-ai/dsh-client-ui-workspace": "^0.0.1",
     "@deepseek-ai/dsh-invariants": "^0.0.1",
-    "cordis": "^4.0.0-rc.7",
+    "@deepseek-ai/cordis": "^4.0.0-rc.7",
     "react": "^18.2.0"
   },
   "devDependencies": {
@@ -53,7 +53,7 @@
     "@deepseek-ai/dsh-client-ui-workspace": "workspace:^",
     "@deepseek-ai/dsh-invariants": "workspace:^",
     "@types/react": "~18.3.1",
-    "cordis": "^4.0.0-rc.7",
+    "@deepseek-ai/cordis": "^4.0.0-rc.7",
     "react": "^18.2.0",
     "tsx": "^4.19.2"
   },

packages/host/directory-picker-native/src/invariant.ts

@@ -3,7 +3,7 @@
  * @module @deepseek-ai/dsh-host-directory-picker-native/invariant
  */
 
-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-host-directory-picker-native'

packages/host/directory-picker-native/tests/client-flow.spec.tsx

@@ -1,5 +1,5 @@
 // @vitest-environment jsdom
-import { Context } from 'cordis'
+import { Context } from '@deepseek-ai/cordis'
 import { describe, expect, it, vi } from 'vitest'
 import { act, cleanup, render } from '@testing-library/react'
 import { afterEach } from 'vitest'

packages/host/directory-picker-native/tests/service.spec.ts

@@ -1,7 +1,7 @@
 /** Registration/capability behavior of the native backend (the seam's cordis half). */
 
 import { describe, expect, it } from 'vitest'
-import { Context } from 'cordis'
+import { Context } from '@deepseek-ai/cordis'
 import NativeDirectoryPicker from '../src/index.ts'
 
 describe('NativeDirectoryPicker', () => {