refactor(sdk): remove unreleased project toolchain

packages/subagent/subagent-codex/tsconfig.json

@@ -24,7 +24,7 @@
       "path": "../../llm/llm"
     },
     {
-      "path": "../../scaffold/protocol"
+      "path": "../../sdk/protocol"
     },
     {
       "path": "../../core/session"

packages/subagent/subagent-dsh-sdk/README.i18n.yaml

@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/subagent/subagent-dsh-sdk/README.md
-README.md: 493bb187d45c7654958cfb3dbbe1dee6bb21b368
-README.zh.md: 2e1d9b1e602f2180d20d43fe8c358163ec4ec024
+README.md: 8d20b44dacd773345986e2a2fc0e6aca9470bf2c
+README.zh.md: 4c9117cad610276ca9d12c914a44dcbaecbbf26e

packages/subagent/subagent-dsh-sdk/README.md

@@ -2,7 +2,7 @@
 
 English | [中文](README.zh.md)
 
-The SDK provider runs each subagent as a complete DeepSeek Harness runtime in a fresh subprocess, driven over stdio JSON-RPC through the [TypeScript SDK client](../../scaffold/client/README.md). It is the second out-of-process backend beside [`subagent-acp`](../subagent-acp/README.md), differing in the wire and the child contract: the ACP backend drives any Agent Client Protocol agent; this backend drives specifically a harness SDK runtime (`dsh-jsonrpc-agent` bin or packaged executable), so the child is a full peer harness — own `cordis.yml`-decided composition, session persistence, model route, and tools.
+The SDK provider runs each subagent as a complete DeepSeek Harness runtime in a fresh subprocess, driven over stdio JSON-RPC through the [TypeScript SDK client](../../sdk/client/README.md). It is the second out-of-process backend beside [`subagent-acp`](../subagent-acp/README.md), differing in the wire and the child contract: the ACP backend drives any Agent Client Protocol agent; this backend drives specifically a harness SDK runtime (`dsh-jsonrpc-agent` bin or packaged executable), so the child is a full peer harness — own `cordis.yml`-decided composition, session persistence, model route, and tools.
 
 ## Start and ownership
 

packages/subagent/subagent-dsh-sdk/README.zh.md

@@ -2,7 +2,7 @@
 
 [English](README.md) | 中文
 
-SDK 提供方会在全新的子进程中把每个 subagent 作为完整的 DeepSeek Harness 运行时运行，并经由 [TypeScript SDK 客户端](../../scaffold/client/README.md) 通过 stdio JSON-RPC 驱动。它是 [`subagent-acp`](../subagent-acp/README.md) 之外的第二个进程外后端，差异在协议格式（wire format）和子进程约定：ACP（Agent Client Protocol）后端能驱动任何 Agent Client Protocol agent（智能体）；本后端专门驱动 harness SDK 运行时（`dsh-jsonrpc-agent` bin 或打包后的可执行文件），因此子进程是一个完整的对等 harness，拥有由 `cordis.yml` 决定的组合、会话持久化、模型路由和工具。
+SDK 提供方会在全新的子进程中把每个 subagent 作为完整的 DeepSeek Harness 运行时运行，并经由 [TypeScript SDK 客户端](../../sdk/client/README.md) 通过 stdio JSON-RPC 驱动。它是 [`subagent-acp`](../subagent-acp/README.md) 之外的第二个进程外后端，差异在协议格式（wire format）和子进程约定：ACP（Agent Client Protocol）后端能驱动任何 Agent Client Protocol agent（智能体）；本后端专门驱动 harness SDK 运行时（`dsh-jsonrpc-agent` bin 或打包后的可执行文件），因此子进程是一个完整的对等 harness，拥有由 `cordis.yml` 决定的组合、会话持久化、模型路由和工具。
 
 ## 启动与所有权
 

packages/subagent/subagent-dsh-sdk/tests/subagent-dsh-sdk.spec.ts

@@ -24,7 +24,7 @@ import {
   type SdkRunSpec,
 } from '../src/run.ts'
 
-const fakeRuntime = fileURLToPath(new URL('../../../scaffold/client/tests/fake-runtime.ts', import.meta.url))
+const fakeRuntime = fileURLToPath(new URL('../../../sdk/client/tests/fake-runtime.ts', import.meta.url))
 
 /** A parent Agent stub. The SDK backend reads exactly one thing off it: the session header's cwd (the workspace its child inherits). */
 const fakeParent = { id: 'parent', session: { header: { cwd: process.cwd() } } } as unknown as Agent

packages/subagent/subagent-dsh-sdk/tsconfig.json

@@ -27,10 +27,10 @@
       "path": "../../core/session"
     },
     {
-      "path": "../../scaffold/client"
+      "path": "../../sdk/client"
     },
     {
-      "path": "../../scaffold/protocol"
+      "path": "../../sdk/protocol"
     },
     {
       "path": "../subagent"