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/ui-conversation/tests/coverage-tails.spec.tsx

@@ -3,7 +3,7 @@
 // without a settings service and AssistantMarkdown reasoning/unknown block arms.
 
 import { afterEach, describe, expect, it } from 'vitest'
-import { Context } from 'cordis'
+import { Context } from '@deepseek-ai/cordis'
 import { cleanup, render } from '@testing-library/react'
 import { makeTranslate } from '@deepseek-ai/dsh-client-test-runtime'
 import { zh as commonZh } from '@deepseek-ai/dsh-client-locale/src/locales/zh.ts'

packages/client/ui-conversation/tests/host.spec.ts

@@ -1,4 +1,4 @@
-import { Context } from 'cordis'
+import { Context } from '@deepseek-ai/cordis'
 import { describe, expect, it } from 'vitest'
 import { Settings, settingsNamespace, type SettingsNamespace } from '@deepseek-ai/dsh-settings'
 import {

packages/client/ui-conversation/tests/input-scenarios.spec.tsx

@@ -8,7 +8,7 @@
  * itself is not a dependency of this package; the source below is the
  * decision-table contract at the `SlashSource` boundary.
  */
-import { Context } from 'cordis'
+import { Context } from '@deepseek-ai/cordis'
 import { afterEach, describe, expect, it, vi } from 'vitest'
 import { act, cleanup, fireEvent, render } from '@testing-library/react'
 import { EMPTY_CHAT_SNAPSHOT, SessionsService } from '@deepseek-ai/dsh-client-runtime/client'

packages/client/ui-conversation/tests/service-orchestration.spec.ts

@@ -3,7 +3,7 @@
 // TestSessions mints tagged scopes through the production createScope, so the
 // service's scopeOf/binding path runs against production resolution (no local
 // tag probe).
-import { Context } from 'cordis'
+import { Context } from '@deepseek-ai/cordis'
 import { describe, expect, it, vi } from 'vitest'
 import { AttachmentId } from '@deepseek-ai/dsh-attachment'
 import { makeTranslate, SlotTestRuntime } from '@deepseek-ai/dsh-client-test-runtime'

packages/client/ui-conversation/tests/views-type-chain.spec.tsx

@@ -1,7 +1,7 @@
 // View-ring type-chain samples. This spec pins the conversation-owned SlotMap
 // row, list-kind registration shape, composed view props, and the runtime
 // ledger projection consumed by ConversationRoot.
-import { Context } from 'cordis'
+import { Context } from '@deepseek-ai/cordis'
 import { describe, expect, it } from 'vitest'
 import type { ReactNode } from 'react'
 import { SlotsService } from '@deepseek-ai/dsh-client-runtime/client'