fix(code-runtime): preserve native temp setup and preview activation

packages/code-runtime/code-runtime-node/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/code-runtime/code-runtime-node/README.md
-README.md: 76e3e4a7cb2d758797ca130f498fe6ec3f697b35
-README.zh.md: 9835128af67d4b57266818aa06ab6cee21412e15
+README.md: 357173bf93a0e5d1e0048b6ee06fac36db856a62
+README.zh.md: 5808193e493b1a8dcf1e404dcc938f62b4b246db

packages/code-runtime/code-runtime-node/README.md

@@ -83,7 +83,7 @@ The host owns policy, deadlines, binding lookup and process cleanup. The child o
 
 ### Launch and control
 
-The host strips erasable types, resolves the executable and bootstrap in the configured execution world, wraps the argv through `ctx.sandbox`, and spawns through `ctx.subprocess`. After adopting the inherited control channel, the child retains only executable-search and Windows system paths in its OS environment and replaces the program-visible `process.env` with an empty dictionary. The retained native paths keep nested Windows process creation functional. The heap limit uses Node argv or a provider-created `NODE_OPTIONS` value for packaged executables; ambient loader and inspector flags are discarded.
+The host strips erasable types, resolves the executable and bootstrap in the configured execution world, wraps the argv through `ctx.sandbox`, and spawns through `ctx.subprocess`. After adopting the inherited control channel, the child retains only executable-search, Windows system, and temporary paths in its OS environment and replaces the program-visible `process.env` with an empty dictionary. Windows ACL setup receives the parent's distinct `TEMP` and `TMP` values for shared grant locks, then replaces both with its private directory before starting the program. These native paths keep nested process creation and native temporary-file APIs functional. The heap limit uses Node argv or a provider-created `NODE_OPTIONS` value for packaged executables; ambient loader and inspector flags are discarded.
 
 Length-framed JSON travels separately from stdout/stderr. The host bounds frames and queued writes, validates call identity and declared binding names before dispatch, and refuses invalid traffic. Output capture meters serialized logs plus the completion or diagnostic; fixed result-envelope fields and sandbox metadata are outside that ledger.
 

packages/code-runtime/code-runtime-node/README.zh.md

@@ -83,7 +83,7 @@ Host 负责策略、截止时间、绑定查找和进程清理。子进程负责
 
 ### 启动与控制
 
-Host 擦除可擦除类型，在配置的执行世界中解析可执行文件与 bootstrap，通过 `ctx.sandbox` 包装 argv，并通过 `ctx.subprocess` 启动。接管继承的控制通道后，子进程在 OS 环境中只保留可执行文件搜索路径和 Windows 系统路径，并将程序可见的 `process.env` 替换为空字典。保留的原生路径使嵌套 Windows 进程创建仍可正常工作。堆上限通过 Node argv 或为打包可执行文件由提供方构造的 `NODE_OPTIONS` 值传递；环境中的加载器和调试器标志会被丢弃。
+Host 擦除可擦除类型，在配置的执行世界中解析可执行文件与 bootstrap，通过 `ctx.sandbox` 包装 argv，并通过 `ctx.subprocess` 启动。接管继承的控制通道后，子进程在 OS 环境中只保留可执行文件搜索路径、Windows 系统路径和临时路径，并将程序可见的 `process.env` 替换为空字典。Windows ACL 初始化接收父进程各自的 `TEMP` 和 `TMP` 值以使用共享授权锁，然后在启动程序前将二者替换为私有目录。这些原生路径使嵌套进程创建和原生临时文件 API 仍可正常工作。堆上限通过 Node argv 或为打包可执行文件由提供方构造的 `NODE_OPTIONS` 值传递；环境中的加载器和调试器标志会被丢弃。
 
 带长度分帧的 JSON 与 stdout/stderr 分开传输。Host 限制帧与排队写入，在分派前验证调用身份和已声明的绑定名，并拒绝无效通信。输出捕获计量序列化日志加完成值或诊断；固定结果信封字段与沙箱元数据不计入该账本。
 

packages/code-runtime/code-runtime-node/src/environment.ts

@@ -1,4 +1,4 @@
 /** Startup variables required by native executables before model evaluation. */
 
-/** Native executable search and Windows system paths retained in the OS environment. */
-export const STARTUP_ENVIRONMENT_NAMES: ReadonlySet<string> = new Set(['PATH', 'PATHEXT', 'SYSTEMROOT', 'WINDIR'])
+/** Native executable search, Windows system paths, and sandbox temporary paths retained in the OS environment. */
+export const STARTUP_ENVIRONMENT_NAMES: ReadonlySet<string> = new Set(['PATH', 'PATHEXT', 'SYSTEMROOT', 'WINDIR', 'TEMP', 'TMP'])

packages/code-runtime/code-runtime-node/tests/host-failures.spec.ts

@@ -429,6 +429,21 @@ describe('Node runtime host failures', () => {
     expect((await h.start()).error).toEqual({ kind: runnerFailed ? 'sandbox-unavailable' : 'worker-exit', message: 'spawn rejected' })
   })
 
+  it('retains distinct native temp paths for the trusted launcher while removing other ambient values', async () => {
+    const h = await setup()
+    onTestFinished(() => { vi.unstubAllEnvs() })
+    vi.stubEnv('TEMP', 'fixture-temp-first')
+    vi.stubEnv('TMP', 'fixture-tmp-second')
+    vi.stubEnv('DSH_TEST_RUNTIME_SECRET', 'must-not-inherit')
+    h.onBoot(() => { h.emit({ type: 'done' }) })
+    expect((await h.start()).error).toBeUndefined()
+    const env = h.spawn.mock.calls[0]?.[0].env ?? {}
+    expect(Object.hasOwn(env, 'TEMP')).toBe(false)
+    expect(Object.hasOwn(env, 'TMP')).toBe(false)
+    expect(Object.hasOwn(env, 'DSH_TEST_RUNTIME_SECRET')).toBe(true)
+    expect(env.DSH_TEST_RUNTIME_SECRET).toBeUndefined()
+  })
+
   it('selects the private packaged bootstrap without leaking ambient environment', async () => {
     const h = await setup()
     h.onBoot(() => { h.emit({ type: 'done' }) })

packages/code-runtime/code-runtime-node/tests/process-main.spec.ts

@@ -23,6 +23,8 @@ it('clears process environment, dispatches a binding reply and flushes the termi
   const nativeEnvironment = state.env
   nativeEnvironment.SystemRoot = 'C:\\Windows'
   nativeEnvironment.PATH = '/native/bin'
+  nativeEnvironment.TMP = 'C:\\sandbox-temp'
+  nativeEnvironment.TEMP = 'C:\\sandbox-temp'
   const messages: Record<string, unknown>[] = []
   const peer = new JsonChannel(host, 4096, (raw) => {
     const message = raw as Record<string, unknown>
@@ -35,7 +37,7 @@ it('clears process environment, dispatches a binding reply and flushes the termi
   expect(state.env).toEqual({})
   expect(state.env).not.toBe(nativeEnvironment)
   expect(Object.getPrototypeOf(state.env)).toBeNull()
-  expect(nativeEnvironment).toEqual({ SystemRoot: 'C:\\Windows', PATH: '/native/bin' })
+  expect(nativeEnvironment).toEqual({ SystemRoot: 'C:\\Windows', PATH: '/native/bin', TMP: 'C:\\sandbox-temp', TEMP: 'C:\\sandbox-temp' })
   expect(state.exitCode).toBeUndefined()
   expect(decodeCodeJsonWire(messages.find(message => message.type === 'done')?.value)).toBe(42)
 })

packages/code-runtime/code-runtime-node/tests/runtime.spec.ts

@@ -1,4 +1,4 @@
-import { mkdtemp, mkdir, readFile, rm, symlink } from 'node:fs/promises'
+import { mkdtemp, mkdir, readFile, readdir, rm, symlink } from 'node:fs/promises'
 import { homedir } from 'node:os'
 import { createServer, type Socket } from 'node:net'
 import { delimiter, join } from 'node:path'
@@ -59,12 +59,40 @@ describe('Node program process', () => {
     expect(value.env).toEqual([])
     expect(value.status).toBe(0)
     expect(value.error).toBeNull()
-    const nativeKeys = ['PATH', 'PATHEXT', 'SYSTEMROOT', 'WINDIR']
+    const nativeKeys = ['PATH', 'PATHEXT', 'SYSTEMROOT', 'WINDIR', 'TEMP', 'TMP']
     // CoreFoundation initializes this entry independently when a macOS child starts.
     if (process.platform === 'darwin') nativeKeys.push('__CF_USER_TEXT_ENCODING')
     expect(value.childKeys.filter(key => !nativeKeys.includes(key.toUpperCase()))).toEqual([])
   })
 
+  it.skipIf(process.platform !== 'win32' || !sandboxUsable)('uses the common Windows grant lock and private native temp without exposing ambient values', async () => {
+    const { run, root } = await setup({}, 'workspace-write')
+    const temp = join(root, 'node-temp')
+    const tmp = join(root, 'win32-temp')
+    await mkdir(temp)
+    await mkdir(tmp)
+    onTestFinished(() => { vi.unstubAllEnvs() })
+    vi.stubEnv('TEMP', temp)
+    vi.stubEnv('TMP', tmp)
+    vi.stubEnv('DSH_TEST_RUNTIME_SECRET', 'must-not-inherit')
+    const childCode = 'const fs=require("node:fs"); const path=require("node:path"); const temp=require("node:os").tmpdir(); const file=path.join(temp,"native-temp.txt"); fs.writeFileSync(file,"native-temp"); process.stdout.write(JSON.stringify({file,temp,env:Object.keys(process.env)}));'
+    const result = await run({
+      program: `const {spawnSync}=await import("node:child_process"); const child=spawnSync(process.execPath,["-e",${JSON.stringify(childCode)}],{encoding:"utf8"}); if(child.status!==0) throw new Error(child.error?.message ?? child.stderr); const native=JSON.parse(child.stdout); return {env:Object.keys(process.env),native,observed:await tools.inspect({path:native.file})};`,
+      bindings: bindings({ inspect: async (args) => {
+        const path = (args as { path: string }).path
+        expect(path.startsWith(`${temp}\\dsh-`)).toBe(true)
+        return await readFile(path, 'utf8')
+      } }),
+    })
+    expect(result.error).toBeUndefined()
+    const value = result.value as { env: string[]; native: { env: string[]; temp: string }; observed: string }
+    expect(value.env).toEqual([])
+    expect(value.native.env).not.toContain('DSH_TEST_RUNTIME_SECRET')
+    expect(value.native.temp.startsWith(`${temp}\\dsh-`)).toBe(true)
+    expect(value.observed).toBe('native-temp')
+    expect((await readdir(join(tmp, 'dsh-acl-locks'))).some(name => name.endsWith('.lock'))).toBe(true)
+  })
+
   it('returns binding values and preserves typed binding rejection', async () => {
     const { run } = await setup()
     const result = await run({

packages/experimental/webworker-runtime/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/experimental/webworker-runtime/README.md
-README.md: d6291063678c9b9f6cc233ce91d737ffe187c37c
-README.zh.md: 5c3a54a054284ecd2ba227913099533a41fd2605
+README.md: 35e34fa0893920976822591d7d8d756d8c1ea076
+README.zh.md: ec23210e5bfdf3b2d03f31dfd725fc3d1d5a170d

packages/experimental/webworker-runtime/README.md

@@ -51,6 +51,7 @@ None; this package neither assembles nor sends a provider request.
 
 - **The worker composition writes plaintext session logs** (`compression: 'none'` boot patch): it carries no Zstandard codec, so exported logs are `.jsonl`, never `.jsonl.zstd`.
 - **`node:dns/promises`, `node:vm`, `node:net`, `node:sqlite`, `node:worker_threads` are structural stubs**: every call reports its refusal on the console and throws. Rows needing native DNS, a real process, or realm isolation cannot run here.
+- **PTC Node programs are unavailable**: the process shim exposes `/dsh/bin/node` as its executable identity so the provider can activate, but the Worker has neither a Node executable nor `stripTypeScriptTypes`. Program execution fails before launching a child.
 - **Filesystem watchers observe only the mounted VFS**: image seeding is silent and the VFS has no symlinks or external writers. `persistent`, `ref()`, and `unref()` preserve the Node API but cannot control a dedicated Worker's lifetime because browsers expose no ref-counted event loop.
 - **Worker confinement is a VFS boundary, not kernel Landlock**: `read-only` and `workspace-write` run the unchanged `@deepseek-ai/node-addon-system/landlock-run` JavaScript and launcher argv, but the process layer implements the logical `landlock-run` executable and enforces its grants on every shell filesystem request. `full` therefore covers the Worker command table and mounted VFS only; it does not claim arbitrary native-process execution or Linux kernel isolation.
 - **The worker bundle pins a path inside `@yarnpkg/parsers`** — the build resolves the package's own `lib/shell.js` instead of its root, whose barrel also re-exports the Syml parser and so drags js-yaml into a bundle that never parses that format (around 175 kB, plus its module body at worker start). The path is derived from the package manifest, so a layout change fails the build rather than reinstating the barrel; upgrading the dependency means re-checking that the shell parser still lives there.

packages/experimental/webworker-runtime/README.zh.md

@@ -51,6 +51,7 @@ kind: "package-library"
 
 - **worker 组合写明文会话日志**（`compression: 'none'` boot patch）：不带 Zstandard 编解码器，导出日志是 `.jsonl`，不会是 `.jsonl.zstd`。
 - **`node:dns/promises`、`node:vm`、`node:net`、`node:sqlite`、`node:worker_threads` 是结构化 stub**：每次调用在 console 报告拒绝并抛出。需要原生 DNS、真进程或真 realm 隔离的行在此无法运行。
+- **PTC Node 程序不可用**：process shim 用 `/dsh/bin/node` 表示可执行文件身份，使 provider 能够激活，但 Worker 既没有 Node 可执行文件，也没有 `stripTypeScriptTypes`。程序执行会在启动子进程前失败。
 - **文件 watcher 只能观察已挂载的 VFS**：镜像 seed 不产生事件，VFS 也没有符号链接或外部写入方。`persistent`、`ref()` 和 `unref()` 保留 Node API，但浏览器没有引用计数事件循环，因此这些接口不能控制 dedicated Worker 的生存期。
 - **Worker confinement 是 VFS 边界，不是内核 Landlock**：`read-only` 和 `workspace-write` 运行未经修改的 `@deepseek-ai/node-addon-system/landlock-run` JavaScript 与 launcher argv，进程层则实现逻辑 `landlock-run` 可执行文件，并在 shell 的每次文件系统请求上执行其授权。`full` 仅覆盖 Worker 命令表和已挂载 VFS，不表示能够执行任意 native 进程，也不表示 Linux 内核隔离。
 - **worker 束钉住了 `@yarnpkg/parsers` 的包内路径**——构建解析到该包自己的 `lib/shell.js` 而非包根，因为包根 barrel 还 re-export 了 Syml 解析器，会把 js-yaml 拖进一个从不解析该格式的束（约 175 kB，外加 worker 启动时的模块体求值）。该路径由包 manifest 派生，包内布局一变即构建期失败、不会静默退回 barrel；升级这个依赖时须复核 shell 解析器是否仍在那里。

packages/experimental/webworker-runtime/src/node/builtin_modules/mock/worker_threads.ts

@@ -1,6 +1,6 @@
 /**
  * `node:worker_threads` stub. Nested workers are unsupported, so the workflow
- * and code-runtime plugin bodies mount and fail on use. The
+ * plugin body mounts and fails on use. The
  * thread-identity values are real: they say "this is the main thread", which is
  * what the worker host is from the tree's point of view.
  */

packages/experimental/webworker-runtime/src/node/globals/process.ts

@@ -24,6 +24,8 @@ export interface ProcessShim {
   readonly env: Record<string, string>
   readonly argv: string[]
   readonly execArgv: string[]
+  /** Virtual host identity; spawning this path reports ENOENT because Node execution is unavailable. */
+  readonly execPath: string
   /** Node process identity used by dependencies for environment detection. */
   readonly title: string
   /**
@@ -89,6 +91,7 @@ export function installProcessGlobal(options: ProcessShimOptions): ProcessShim {
     env: { ...options.env },
     argv: [...(options.argv ?? ['node', 'dsh-webworker'])],
     execArgv: [],
+    execPath: '/dsh/bin/node',
     title: 'dsh-webworker',
     platform: 'linux',
     arch: 'x64',

packages/experimental/webworker-runtime/tests/node/process-shim.spec.ts

@@ -7,6 +7,7 @@ import { afterEach, describe, expect, it } from 'vitest'
 import { installProcessGlobal } from '../../src/node/globals/process.ts'
 import { setActiveModuleLoader, WorkerModuleLoader } from '../../src/module-system/module-loader.ts'
 import { MemoryVfs } from '../../src/storage/memory.ts'
+import { spawnSync } from '../../src/node/builtin_modules/implemented/child_process.ts'
 
 const realProcess = globalThis.process
 
@@ -25,6 +26,12 @@ describe('process shim', () => {
     expect(shim.versions.node).toBe('0.0.0')
   })
 
+  it('exposes an executable identity without enabling Node programs', () => {
+    const shim = installProcessGlobal({ cwd: '/dsh', env: {} })
+    expect(shim.execPath).toBe('/dsh/bin/node')
+    expect(spawnSync(shim.execPath, ['--eval', 'throw new Error("must not execute")']).error?.code).toBe('ENOENT')
+  })
+
   it('answers getBuiltinModule from the module proxies and undefined otherwise', () => {
     const fs = { marker: 'fs-proxy' }
     // The table holds factories, and a builtin must keep one identity across

snapshots/web/present/session.v3.jsonl

@@ -21,7 +21,7 @@
 {"type":"tool/ptc-dispatch-start","data":{"rootCallId":"call_00_GgvYPol45qxGf6GezK3L3590","parentCallId":"call_00_GgvYPol45qxGf6GezK3L3590","subCallId":"call_00_GgvYPol45qxGf6GezK3L3590:ptc:3","name":"present","arguments":{"files":[{"path":"report.txt","description":"delivered report"},{"path":"说明.txt","description":"delivered note"}]}}}
 {"type":"deliverables/presented","data":{"turn":1,"callId":"call_00_GgvYPol45qxGf6GezK3L3590:ptc:3","files":[{"path":"report.txt","description":"delivered report"},{"path":"说明.txt","description":"delivered note"}]}}
 {"type":"tool/ptc-dispatch","data":{"rootCallId":"call_00_GgvYPol45qxGf6GezK3L3590","parentCallId":"call_00_GgvYPol45qxGf6GezK3L3590","subCallId":"call_00_GgvYPol45qxGf6GezK3L3590:ptc:3","name":"present","arguments":{"files":[{"path":"report.txt","description":"delivered report"},{"path":"说明.txt","description":"delivered note"}]},"isError":false,"content":[{"type":"text","text":"Presented report.txt\nPresented 说明.txt"}]}}
-{"type":"tool/result","data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"call_00_GgvYPol45qxGf6GezK3L3590"},"content":[{"type":"tool-result","toolCallId":"call_00_GgvYPol45qxGf6GezK3L3590","content":[{"type":"text","text":"Error: code run failed (exception): AFTER_PRESENT\nCaptured output:\nCaught present error for missing.txt: object ToolCallError: Cannot present missing.txt: file not found. Check the path, create the file if needed, and retry.\nbash exit: 0\npresent ok, files: report.txt, 说明.txt"}],"isError":true}],"role":"user","id":"{{message:5}}"},"error":{"name":"CodeRunFailedError","code":"CODE_RUN_FAILED"}},"sourceEventSeqs":[14],"surfaceOp":"append"}
+{"type":"tool/result","data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"call_00_GgvYPol45qxGf6GezK3L3590"},"content":[{"type":"tool-result","toolCallId":"call_00_GgvYPol45qxGf6GezK3L3590","content":[{"type":"text","text":"Error: code run failed (exception): AFTER_PRESENT\nCaptured output:\nCaught present error for missing.txt: object ToolCallError: Cannot present missing.txt: file not found. Check the path, create the file if needed, and retry.\nbash exit: 0\npresent ok, files: report.txt, 说明.txt\nFile sandbox: workspace-write; enforcement: full."}],"isError":true}],"role":"user","id":"{{message:5}}"},"error":{"name":"CodeRunFailedError","code":"CODE_RUN_FAILED"}},"sourceEventSeqs":[14],"surfaceOp":"append"}
 {"type":"step/end","data":{"turn":1,"step":1}}
 {"type":"step/start","data":{"turn":1,"step":2}}
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