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/acp/acp/package.json

@@ -26,14 +26,14 @@
   "license": "BSD-3-Clause",
   "dependencies": {
     "@agentclientprotocol/sdk": "0.25.1",
-    "schemastery": "^3.17.0"
+    "@deepseek-ai/schemastery": "^3.17.0"
   },
   "peerDependencies": {
     "@deepseek-ai/dsh-agent": "^0.0.1",
     "@deepseek-ai/dsh-invariants": "^0.0.1",
     "@deepseek-ai/dsh-session": "^0.0.1",
     "@deepseek-ai/dsh-user-approval": "^0.0.1",
-    "cordis": "^4.0.0-rc.7"
+    "@deepseek-ai/cordis": "^4.0.0-rc.7"
   },
   "devDependencies": {
     "@deepseek-ai/dsh-agent": "workspace:^",
@@ -44,6 +44,6 @@
     "@deepseek-ai/dsh-session": "workspace:^",
     "@deepseek-ai/dsh-tools": "workspace:^",
     "@deepseek-ai/dsh-user-approval": "workspace:^",
-    "cordis": "^4.0.0-rc.7"
+    "@deepseek-ai/cordis": "^4.0.0-rc.7"
   }
 }

packages/acp/acp/src/index.ts

@@ -9,11 +9,11 @@
  * @module @deepseek-ai/dsh-acp
  */
 
-import type { Context } from 'cordis'
+import type { Context } from '@deepseek-ai/cordis'
 import { randomUUID } from 'node:crypto'
 import { isAbsolute } from 'node:path'
 import { Readable, Writable } from 'node:stream'
-import Schema from 'schemastery'
+import Schema from '@deepseek-ai/schemastery'
 import { createUserMessage, errorChain } from '@deepseek-ai/dsh-llm'
 import {
   AgentSideConnection,

packages/acp/acp/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-acp'

packages/acp/acp/tests/harness.ts

@@ -1,6 +1,6 @@
 /** In-memory ACP transport fixture over the real agent factory and loop. */
 
-import { Context } from 'cordis'
+import { Context } from '@deepseek-ai/cordis'
 import {
   ClientSideConnection,
   ndJsonStream,