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/workflow/workflow-workerthread/src/host.ts

@@ -9,7 +9,7 @@
 import { Worker } from 'node:worker_threads'
 import type { WorkerOptions } from 'node:worker_threads'
 import { fileURLToPath } from 'node:url'
-import type { Context } from 'cordis'
+import type { Context } from '@deepseek-ai/cordis'
 import type { Agent } from '@deepseek-ai/dsh-agent'
 import { assertNever } from '@deepseek-ai/dsh-llm'
 import { snapshotJsonValue } from '@deepseek-ai/dsh-session'

packages/workflow/workflow-workerthread/src/index.ts

@@ -9,8 +9,8 @@
 import { randomUUID } from 'node:crypto'
 import { availableParallelism } from 'node:os'
 import * as vm from 'node:vm'
-import type { Context } from 'cordis'
-import z from 'schemastery'
+import type { Context } from '@deepseek-ai/cordis'
+import z from '@deepseek-ai/schemastery'
 import WorkflowService, { WorkflowError, WorkflowRunId } from '@deepseek-ai/dsh-workflow'
 import type { WorkflowRun, WorkflowRunInfo, WorkflowStartRequest } from '@deepseek-ai/dsh-workflow'
 import { WorkerRun } from './host.ts'

packages/workflow/workflow-workerthread/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-workflow-workerthread'