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/context/session-reference/package.json

@@ -25,7 +25,7 @@
   ],
   "license": "BSD-3-Clause",
   "dependencies": {
-    "schemastery": "^3.18.0"
+    "@deepseek-ai/schemastery": "^3.18.0"
   },
   "peerDependencies": {
     "@deepseek-ai/dsh-agent": "^0.0.1",
@@ -35,7 +35,7 @@
     "@deepseek-ai/dsh-retention": "^0.0.1",
     "@deepseek-ai/dsh-session": "^0.0.1",
     "@deepseek-ai/dsh-session-query": "^0.0.1",
-    "cordis": "^4.0.0-rc.7"
+    "@deepseek-ai/cordis": "^4.0.0-rc.7"
   },
   "devDependencies": {
     "@deepseek-ai/dsh-agent": "workspace:^",
@@ -45,6 +45,6 @@
     "@deepseek-ai/dsh-retention": "workspace:^",
     "@deepseek-ai/dsh-session": "workspace:^",
     "@deepseek-ai/dsh-session-query": "workspace:^",
-    "cordis": "^4.0.0-rc.7"
+    "@deepseek-ai/cordis": "^4.0.0-rc.7"
   }
 }

packages/context/session-reference/src/index.ts

@@ -5,8 +5,8 @@
  * @module @deepseek-ai/dsh-session-reference
  */
 
-import { Context, Service } from 'cordis'
-import z from 'schemastery'
+import { Context, Service } from '@deepseek-ai/cordis'
+import z from '@deepseek-ai/schemastery'
 import type { Agent } from '@deepseek-ai/dsh-agent'
 import { createUserMessage } from '@deepseek-ai/dsh-llm'
 import type { ContentBlock, UserMessage } from '@deepseek-ai/dsh-llm'
@@ -50,7 +50,7 @@ user explicitly repeats them.
 `
 const PROMPT_SUFFIX = '\n</referenced-sessions>'
 
-declare module 'cordis' {
+declare module '@deepseek-ai/cordis' {
   interface Context {
     sessionReferences: SessionReferenceService
   }

packages/context/session-reference/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-session-reference'

packages/context/session-reference/tests/session-reference.spec.ts

@@ -1,5 +1,5 @@
 import { describe, expect, it, vi } from 'vitest'
-import { Context } from 'cordis'
+import { Context } from '@deepseek-ai/cordis'
 import type { Agent } from '@deepseek-ai/dsh-agent'
 import { CompactionId, compactCheckpointSource } from '@deepseek-ai/dsh-compact'
 import { createUserMessage, CallId , createMessage, createToolResultMessage } from '@deepseek-ai/dsh-llm'