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/fs/tool-fs-search/src/glob.ts

@@ -9,7 +9,7 @@
  * @module @deepseek-ai/dsh-tool-fs-search/glob
  */
 
-import type { Context } from 'cordis'
+import type { Context } from '@deepseek-ai/cordis'
 import { sep } from 'node:path'
 import { defineTool } from '@deepseek-ai/dsh-tools'
 import type { GenericCallView, SearchResultView, ToolResult } from '@deepseek-ai/dsh-tools'

packages/fs/tool-fs-search/src/grep.ts

@@ -11,7 +11,7 @@
  * @module @deepseek-ai/dsh-tool-fs-search/grep
  */
 
-import type { Context } from 'cordis'
+import type { Context } from '@deepseek-ai/cordis'
 import { defineTool } from '@deepseek-ai/dsh-tools'
 import type { GenericCallView, SearchResultView, ToolResult } from '@deepseek-ai/dsh-tools'
 import type { RetainedItems } from '@deepseek-ai/dsh-retention'

packages/fs/tool-fs-search/src/index.ts

@@ -26,8 +26,8 @@
  * @module @deepseek-ai/dsh-tool-fs-search
  */
 
-import type { Context } from 'cordis'
-import z from 'schemastery'
+import type { Context } from '@deepseek-ai/cordis'
+import z from '@deepseek-ai/schemastery'
 import { MAX_TIMER_DELAY_MS } from '@deepseek-ai/dsh-timeout'
 import { GLOB_MAX_RESULTS, applyGlobTool } from './glob.ts'
 import { GREP_MAX_LINE_BYTES, GREP_MAX_MATCHES, applyGrepTool } from './grep.ts'

packages/fs/tool-fs-search/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-tool-fs-search'

packages/fs/tool-fs-search/src/search-core.ts

@@ -20,7 +20,7 @@
  */
 
 import { isAbsolute, relative, sep } from 'node:path'
-import type { Context } from 'cordis'
+import type { Context } from '@deepseek-ai/cordis'
 import { HarnessError } from '@deepseek-ai/dsh-llm'
 import { ItemRetainer, TextRetainer } from '@deepseek-ai/dsh-retention'
 import type { RetainedItems } from '@deepseek-ai/dsh-retention'

packages/fs/tool-fs-search/src/surface.ts

@@ -1,6 +1,6 @@
 /** Shared surface-only post-policy selection for search result spill. @module dsh-tool-fs-search/surface */
 
-import type { Context } from 'cordis'
+import type { Context } from '@deepseek-ai/cordis'
 import type { JsonValue, PostToolDecision, ToolDefinition, ToolExecution, ToolExecutionResult } from '@deepseek-ai/dsh-tools'
 
 /**