Merge remote-tracking branch 'origin/master' into worktree/preset-plane-fallout-p1

The vendored Cordis rescope (`cordis` -> `@deepseek-ai/cordis`,
`@cordisjs/plugin-*` -> `@deepseek-ai/cordis-plugin-*`) collided with this
branch's two added edges. Resolved by taking master's package names and
keeping this branch's additions: `@deepseek-ai/dsh-agent` and
`@deepseek-ai/dsh-system-prompt` peers, the `scopeChainOf` import, and the
`agent/created` type-only edge.

`docs/event-producer-consumer.*` is generated; regenerated after the merge
rather than hand-resolved.

packages/scaffold/server/src/index.ts

@@ -13,9 +13,9 @@
  * @module @deepseek-ai/dsh-jsonrpc
  */
 
-import type { Context } from 'cordis'
+import type { Context } from '@deepseek-ai/cordis'
 import type { Readable, Writable } from 'node:stream'
-import Schema from 'schemastery'
+import Schema from '@deepseek-ai/schemastery'
 import { JsonRpcLineTransport } from '@deepseek-ai/dsh-sdk-protocol'
 import { HarnessSdkServer } from './server.ts'
 

packages/scaffold/server/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-jsonrpc'

packages/scaffold/server/src/server.ts

@@ -5,7 +5,7 @@
  * @module @deepseek-ai/dsh-jsonrpc/server
  */
 
-import type { Context } from 'cordis'
+import type { Context } from '@deepseek-ai/cordis'
 import { resolve } from 'node:path'
 import type { Agent, AgentHandle } from '@deepseek-ai/dsh-agent'
 import { createUserMessage } from '@deepseek-ai/dsh-llm'