fix(web-access): 修复 Windows CDP attach 配方 (#95)

## 中文

- 将 web-access 升级到 v3.4.1
- Windows attach 明确禁止把 POSIX heredoc/`/tmp` 交给 PowerShell
- 增加 Playwright import 预检、DesireCore 隔离 venv 和 PowerShell here-string
写脚本配方
- 保持 ready 与依赖缺失分离，禁止回落内置浏览器

## English

- Bump web-access to v3.4.1
- Forbid POSIX heredocs and `/tmp` paths in Windows PowerShell attach
flows
- Add Playwright import preflight, DesireCore-isolated venv guidance,
and a native PowerShell here-string recipe
- Keep browser readiness separate from dependency availability and never
fall back silently

## Validation

- `test_validate_i18n.py`: 9/9
- `validate-i18n.py skills/web-access`: pass
- `translate.py --check skills/web-access`: pass
- Windows live-device observation: probe reached Chrome ready, then the
old recipe attempted Bash `/tmp` and PowerShell `cat <<EOF`; this PR
fixes that deterministic cross-shell failure.

skills/web-access/SKILL.md

@@ -15,7 +15,7 @@ description: >-
   新闻、网址、URL、找一下、搜一下、查一下、小红书、B站、微博、飞书、Twitter、
   推特、X、知乎、公众号、已登录、登录状态。
 license: Complete terms in LICENSE.txt
-version: 3.4.0
+version: 3.4.1
 type: procedural
 risk_level: low
 status: enabled
@@ -54,14 +54,14 @@ metadata:
       short_desc: 联网搜索、网页抓取、内置受管浏览器登录态访问与取文、研究调研工作流
       description: 联网访问工具包——搜索公开页面、Jina 优化抓取、内置受管浏览器完成登录态访问与取文，以及用户点名时接管他自己的 Chrome/Edge/Chromium。
       body: ./SKILL.zh-CN.md
-      source_hash: sha256:1704b973e3a90e89
+      source_hash: sha256:efcfd466dd6026a0
       translated_by: human
     en-US:
       name: Web Access
       short_desc: Web search, page fetching, logged-in access via the governed built-in browser, research workflows
       description: A web-access toolkit — search public pages, fetch heavy pages via Jina Reader, reach and read logged-in sites through the governed built-in browser, and drive the user's named Chrome/Edge/Chromium over CDP on request.
       body: ./SKILL.md
-      source_hash: sha256:1704b973e3a90e89
+      source_hash: sha256:efcfd466dd6026a0
       translated_by: human
 market:
   icon: >-
@@ -188,16 +188,46 @@ from “browser installed but debugging disabled”, and a random HTTP service m
 ⚠️ When attached over CDP, **never call `browser.close()`** — that would close the user's own external browser.
 Only close the page you opened. Full recipes in [references/cdp-browser.md](references/cdp-browser.md).
 
+### Platform-safe Playwright execution
+
+After a `ready` probe, identify the current OS **before** creating or running an attach script:
+
+1. Check whether the selected Python interpreter can import Playwright. A missing dependency is
+   separate from browser readiness: report it explicitly and do not attach yet.
+2. Keep Playwright in a DesireCore-owned isolated virtual environment. Never install it globally and
+   never run `playwright install`; CDP attach reuses the browser that is already running.
+3. On Unix-like hosts, use Bash paths and shell syntax. On Windows, use the `PowerShell` tool and a
+   PowerShell here-string plus `[IO.File]::WriteAllText(...)` to create the temporary `.py` file.
+   **Never send `cat <<EOF`, `/tmp/...`, or another POSIX heredoc to PowerShell.**
+4. Invoke the virtual environment's platform-specific Python (`bin/python` on Unix,
+   `Scripts\python.exe` on Windows), remove only the temporary script you created, and leave the
+   external browser running.
+
+If the platform cannot be determined or no isolated runtime can be created safely, stop and report
+the missing prerequisite. Do not improvise a cross-shell command and do not fall back to BrowserManage.
+
 ---
 
 ## Tool Selection Decision Tree
 
 ```
 User intent
+  │
+  ├─ **Any request that names "my own / my machine's / external Chrome/Edge/Chromium"**
+  │     └─→ L3-external first, whether the verb is search/read/open/click:
+  │          BrowserExternalProbe(exact requested browser), then connect_over_cdp() only on `ready`
+  │          Otherwise follow the status guidance and wait; never route to WebSearch/WebFetch/Jina/built-in browser
+  │
+  ├─ "Local browser" without saying built-in or external
+  │     └─→ Ask which browser identity the user means before selecting any route or tool
   │
   ├─ "Search for information about X" (no specific URL)
   │     └─→ WebSearch → pick top 3-5 results → fetch each (see next branches)
   │
+  ├─ "Open / go to this URL" (no external/own-browser qualifier)
+  │     └─→ BrowserManage(create_space/start_session) → BrowserAct(tab.navigate)
+  │          Keep the built-in browser visible. "Open" is an interaction request, not a synonym for WebFetch.
+  │
   ├─ "Read this public page" (static HTML, docs, news)
   │     └─→ WebFetch(url) directly
   │
@@ -219,11 +249,8 @@ User intent
   │          - npm:    curl https://registry.npmjs.org/<pkg>
   │          - PyPI:   curl https://pypi.org/pypi/<pkg>/json
   │
-  └─ "Real-time interactive task" (click, fill form, scroll, screenshot)
+  └─ "Real-time interactive task" (click, fill form, scroll, screenshot; no external qualifier)
-        ├─→ **User named "my own / my machine's / the external browser"** → L3-external:
+        └─→ Built-in browser by default (BrowserManage → BrowserAct → BrowserSnapshot —
-        │     BrowserExternalProbe(exact requested browser), then connect_over_cdp() only on `ready`
-        │     Otherwise follow the status guidance and wait — don't quietly switch to the built-in one
-        └─→ **Otherwise (default)**: built-in browser (BrowserManage → BrowserAct → BrowserSnapshot —
              see references/browser-tools.md, no Python needed)
 ```
 

skills/web-access/SKILL.zh-CN.md

@@ -103,16 +103,40 @@ If any fetch fails, explicitly tell the user which URL failed and which fallback
 ⚠️ 用 CDP attach 时**绝不能调 `browser.close()`**，那会关掉用户自己的外部浏览器；只关你开的 page。
 完整配方见 [references/cdp-browser.md](references/cdp-browser.md)。
 
+### 按平台安全执行 Playwright
+
+probe 返回 `ready` 后，创建或执行 attach 脚本前**必须先确认当前操作系统**：
+
+1. 先检查选定的 Python 能否 import Playwright。依赖缺失与浏览器 ready 是两件事：明确报告缺失，暂不 attach。
+2. Playwright 只能装进 DesireCore 拥有的隔离 venv；不得全局安装，也不得运行 `playwright install`，因为 CDP attach 复用已运行浏览器。
+3. Unix-like 主机使用 Bash 路径和语法；Windows 必须使用 `PowerShell` 工具，以 PowerShell here-string 和
+   `[IO.File]::WriteAllText(...)` 创建临时 `.py`。**绝不能把 `cat <<EOF`、`/tmp/...` 或其他 POSIX heredoc 交给 PowerShell。**
+4. 调用 venv 对应平台的 Python（Unix 为 `bin/python`，Windows 为 `Scripts\python.exe`），只删除本轮创建的临时脚本，外部浏览器保持运行。
+
+无法判断平台或无法安全创建隔离运行时时，停止并报告缺失前置；不得即兴混用 shell，也不得回落 BrowserManage。
+
 ---
 
 ## Tool Selection Decision Tree
 
 ```
 User intent
+  │
+  ├─ **任何点名「我自己的 / 我本机的 / 外部 Chrome、Edge、Chromium」的请求**
+  │     └─→ 不论动词是搜索、读取、打开还是点击，都优先走 L3-external：
+  │          BrowserExternalProbe（精确点名产品），仅 `ready` 后 connect_over_cdp()
+  │          否则按状态提示并等待；绝不能改走 WebSearch、WebFetch、Jina 或内置浏览器
+  │
+  ├─ 只说「本地浏览器」，没有说明内置还是外部
+  │     └─→ 选择任何路线/工具前先澄清浏览器身份
   │
   ├─ "Search for information about X" (no specific URL)
   │     └─→ WebSearch → pick top 3-5 results → fetch each (see next branches)
   │
+  ├─ 「打开 / 导航到这个 URL」（没有点名自己的/外部浏览器）
+  │     └─→ BrowserManage(create_space/start_session) → BrowserAct(tab.navigate)
+  │          保持内置浏览器可见。「打开」是交互请求，不等同于 WebFetch。
+  │
   ├─ "Read this public page" (static HTML, docs, news)
   │     └─→ WebFetch(url) directly
   │
@@ -134,12 +158,9 @@ User intent
   │          - npm:    curl https://registry.npmjs.org/<pkg>
   │          - PyPI:   curl https://pypi.org/pypi/<pkg>/json
   │
-  └─ "Real-time interactive task" (click, fill form, scroll, screenshot)
+  └─ "Real-time interactive task"（点击、填表、滚动、截图；没有外部限定）
-        ├─→ **用户点名「我本机的 / 我自己的 / 外部的浏览器」** → L3-external：
+        └─→ 默认使用内置浏览器（BrowserManage → BrowserAct → BrowserSnapshot —
-        │     BrowserExternalProbe（精确点名的浏览器），仅 `ready` 后 connect_over_cdp()
+             见 references/browser-tools.md，零 Python 依赖）
-        │     其余状态按表处理并等待，不要擅自改用内置浏览器
-        └─→ **其余情况（默认）**：内置受管浏览器 (BrowserManage → BrowserAct → BrowserSnapshot —
-             see references/browser-tools.md, no Python needed)
 ```
 
 ### 两个浏览器，按用户意图选，不按能力难度选

skills/web-access/references/cdp-browser.md

@@ -318,12 +318,64 @@ The approved external Chromium browser is running but no windows are open. Ask t
 
 ### Playwright not installed
 
+First ensure the isolated venv exists, then run the import-only check with **that venv's interpreter**.
+Do not generate or execute the attach script until this succeeds.
+
+#### Unix-like hosts
+
 ```bash
-python3 -m venv "${DESIRECORE_ROOT}/runtime/external-browser-playwright"
+test -x "<DESIRECORE_HOME>/runtime/external-browser-playwright/bin/python" || \
-"${DESIRECORE_ROOT}/runtime/external-browser-playwright/bin/pip" install 'playwright==1.55.0' beautifulsoup4
+  python3 -m venv "<DESIRECORE_HOME>/runtime/external-browser-playwright"
+if ! "<DESIRECORE_HOME>/runtime/external-browser-playwright/bin/python" -c 'import playwright'; then
+  "<DESIRECORE_HOME>/runtime/external-browser-playwright/bin/python" -m pip install 'playwright==1.55.0' beautifulsoup4
+fi
+"<DESIRECORE_HOME>/runtime/external-browser-playwright/bin/python" -c 'import playwright' || {
+  echo 'Playwright is still unavailable in the isolated venv' >&2
+  exit 1
+}
 # No need for `playwright install` — we're attaching to an existing browser, not downloading one
 ```
 
+#### Windows hosts
+
+Use the `PowerShell` tool. Resolve `<DESIRECORE_HOME>` from the current DesireCore instance; do not
+guess another instance's directory.
+
+```powershell
+$venv = Join-Path '<DESIRECORE_HOME>' 'runtime\external-browser-playwright'
+$python = Join-Path $venv 'Scripts\python.exe'
+if (-not (Test-Path -LiteralPath $python)) {
+    python -m venv $venv
+    if ($LASTEXITCODE -ne 0) { throw 'Failed to create the isolated Playwright venv.' }
+}
+& $python -c "import playwright"
+if ($LASTEXITCODE -ne 0) {
+    # Explain the missing dependency and obtain any required install approval first.
+    & $python -m pip install 'playwright==1.55.0' beautifulsoup4
+    if ($LASTEXITCODE -ne 0) { throw 'Failed to install Playwright in the isolated venv.' }
+    & $python -c "import playwright"
+    if ($LASTEXITCODE -ne 0) { throw 'Playwright is still unavailable in the isolated venv.' }
+}
+# Do NOT run `playwright install`; CDP attach uses the already-running external browser.
+```
+
+To run an attach script on Windows, do not send a Bash heredoc to PowerShell. Use a native
+PowerShell here-string and explicit UTF-8 write:
+
+```powershell
+$scriptPath = Join-Path $env:TEMP ("desirecore-external-cdp-{0}.py" -f [guid]::NewGuid().ToString('N'))
+$script = @'
+# Paste the reviewed Python attach script here.
+'@
+try {
+    [IO.File]::WriteAllText($scriptPath, $script, (New-Object Text.UTF8Encoding($false)))
+    & $python $scriptPath
+    if ($LASTEXITCODE -ne 0) { throw "Playwright attach failed with exit code $LASTEXITCODE." }
+} finally {
+    Remove-Item -LiteralPath $scriptPath -ErrorAction SilentlyContinue
+}
+```
+
 Keep the environment isolated to DesireCore; do not install Playwright globally. A missing Playwright
 dependency does not change a `ready` browser/CDP result and never authorizes fallback to BrowserManage.