fix(win): Python detection and proxy support

CHANGELOG.md

@@ -6,7 +6,7 @@
 
 ### 新增
 - **Windows PowerShell 移植版**（`scripts/windows/`）：
-  - `scripts/windows/*.ps1` — 薄 PowerShell 包装层，委托给 `scripts/gh-api.py`（Python 后端）；需要 Python 3.8+
+  - `scripts/windows/*.ps1` — 薄 PowerShell 包装层，委托给 `scripts/gh-api.py`（Python 后端）；需要 Python 3.7+
   - `_common.ps1` — 共享辅助函数，负责构建参数并调用 Python 后端
   - `gh-user.ps1` / `gh-repo.ps1` / `gh-issue.ps1` / `gh-pr.ps1` — 核心 Bash 脚本的 PowerShell 等价物
   - 认证回退链：`gh auth token` → `GITHUB_TOKEN`/`GH_TOKEN` 环境变量 → `~/.github_token` 文件 → `~/.config/github-ops/token` → `~/github_token.txt`
@@ -15,8 +15,12 @@
 
 ### 变更
 - README 已更新，增加各平台快速上手指南
+- Windows 文档改为使用 `py -3` / `python`，不再假设存在 `py3` 或 `python3`
 
 ### 修复
+- Windows Python 探测优先使用 `py -3`，避免 bare `py` 被 `py.ini`/`PY_PYTHON` 配置到 Python 2
+- Python API 后端代理处理改用 `urllib.request.getproxies()`，保留小写代理变量覆盖大写变量的标准优先级
+- Windows PowerShell 包装器改用 .NET UTF-8 无 BOM 写文件，兼容 Windows PowerShell 5.1
 - `gh-pr-review.sh`：处理 GitHub API 返回的 `null` 类型 `pull_request_review_id` 和 `user` 字段
 - `gh-pr-reviews.sh`：处理 GitHub API 返回的 `null` 类型 `user` 字段
 

README.md

@@ -6,7 +6,7 @@
 
 [![License](https://img.shields.io/badge/License-MIT-orange.svg)](LICENSE)
 [![Platform](https://img.shields.io/badge/Platform-Linux%20%7C%20macOS%20%7C%20Windows-blue.svg)](#-快速开始)
-[![Python](https://img.shields.io/badge/Python-3.8%2B-green.svg)](https://www.python.org/)
+[![Python](https://img.shields.io/badge/Python-3.7%2B-green.svg)](https://www.python.org/)
 [![Zero Dependencies](https://img.shields.io/badge/Dependencies-None-brightgreen.svg)](#技术亮点)
 
 </div>
@@ -59,6 +59,7 @@
 - **🎯 字段过滤** — 支持 `owner.login`、`0.name` 等点号路径提取，减少 JSON 噪音
 - **🔐 安全认证** — Token 文件权限检查（Linux: `S_IRWXG|S_IRWXO` / Windows: ACL）
 - **🔑 多级回退** — `gh auth token` → `GITHUB_TOKEN`/`GH_TOKEN` → `~/.github_token`
+- **🌐 代理兼容** — Python 后端使用 `urllib` 标准代理发现，支持 `http_proxy`/`https_proxy` 覆盖大写环境变量
 - **🐍 统一后端** — `gh-api.py` 处理所有 HTTP/JSON/分页逻辑。Linux/macOS 包装器引用同目录副本，`scripts/windows/*.ps1` 引用 `../gh-api.py`
 
 ---
@@ -67,8 +68,8 @@
 
 ### 环境要求
 
-- **Linux / macOS**: Bash + Python 3.8+
-- **Windows**: PowerShell 7+ + Python 3.8+
+- **Linux / macOS**: Bash + Python 3.7+
+- **Windows**: Windows PowerShell 5.1+ 或 PowerShell 7+ + Python 3.7+（优先 `py -3`，其次 `python`；不要假设存在 `py3`/`python3`）
 
 ### 1. 克隆仓库
 
@@ -112,7 +113,7 @@ chmod 600 ~/.github_token
 ./scripts/linux/gh-activity.sh yang12535 10
 ```
 
-**Windows**（PowerShell 7+ 脚本）
+**Windows**（Windows PowerShell 5.1+ / PowerShell 7+ 脚本）
 ```powershell
 # 查看当前用户
 ./scripts/windows/gh-user.ps1
@@ -171,13 +172,17 @@ github-ops/
 # 自动分页（需 Python 后端支持；curl fallback 不支持分页）
 ./scripts/gh-api-call.sh repos/owner/repo/issues -p
 
-# 字段过滤（直接调用 Python 后端）
+# 字段过滤（直接调用 Python 后端，Linux/macOS）
 python3 scripts/gh-api.py repos/owner/repo/issues -p -f "0.title"
+
+# 字段过滤（Windows）
+py -3 scripts/gh-api.py repos/owner/repo/issues -p -f "0.title"
 ```
 
 ### Python 底层引擎
 
 ```bash
+# Linux/macOS
 # 查询并提取字段
 python3 scripts/gh-api.py repos/owner/repo -f owner.login
 
@@ -189,6 +194,14 @@ python3 scripts/gh-api.py -X PATCH -d '{"state":"closed"}' \
   repos/owner/repo/issues/1
 ```
 
+Windows 直接调用 Python 后端时使用 `py -3`（推荐）或 `python`：
+
+```powershell
+py -3 scripts/gh-api.py repos/owner/repo -f owner.login
+py -3 scripts/gh-api.py repos/owner/repo/issues -p -c
+py -3 scripts/gh-api.py -X PATCH -d '{"state":"closed"}' repos/owner/repo/issues/1
+```
+
 ### PR Review 工作流
 
 ```bash
@@ -219,7 +232,7 @@ python3 scripts/gh-api.py -X PATCH -d '{"state":"closed"}' \
 ### 文件权限检查
 
 - **Linux/macOS**（Python 后端 + PowerShell）：拒绝 `group` 或 `others` 有任何权限的 token 文件（读/写/执行均不允许）
-- **Windows**（仅 PowerShell 包装脚本）：拒绝 `Users`/`Everyone`/`Authenticated Users` 可读取的 token 文件。注意：Windows 上直接运行 `python3 scripts/gh-api.py` 不会触发 ACL 检查
+- **Windows**（仅 PowerShell 包装脚本）：拒绝 `Users`/`Everyone`/`Authenticated Users` 可读取的 token 文件。注意：Windows 上直接运行 `py -3 scripts/gh-api.py` 或 `python scripts/gh-api.py` 不会触发 ACL 检查
 
 ```bash
 # 正确示例
@@ -248,8 +261,15 @@ chmod 600 ~/.github_token
 # Shell 脚本语法检查
 find scripts -name "*.sh" -exec bash -n {} \;
 
-# Python 编译检查（含 scripts/ 与 scripts/linux/）
+# Python 编译检查（Linux/macOS，含 scripts/ 与 scripts/linux/）
 find scripts -name "*.py" -exec python3 -m py_compile {} \;
+```
+
+```powershell
+# Python 编译检查（Windows）
+Get-ChildItem scripts -Recurse -Filter "*.py" | ForEach-Object {
+    py -3 -m py_compile $_.FullName
+}
 
 # PowerShell 语法检查（Windows）
 Get-ChildItem scripts/windows -Filter "*.ps1" | ForEach-Object {

SKILL.md

@@ -8,6 +8,7 @@ description: "通过已认证的 REST API（curl/urllib）进行 GitHub 仓库
 **主要方式**：通过 `scripts/gh-api.py`（Python/urllib）或直接 `curl` 调用 GitHub REST API。
 **快捷脚本**：`scripts/gh-*.sh` 为常见任务提供便利封装。
 **认证来源**：`gh auth token`（优先）→ `GITHUB_TOKEN` / `GH_TOKEN` 环境变量回退。仅在 token 缺失时才需要执行 `gh auth login` 重新认证。
+**Windows Python**：Windows 包装器优先使用 `py -3`，然后回退到 `python`；不要假设存在 `py3` 或 `python3`。
 
 ## 快速开始
 
@@ -198,11 +199,19 @@ curl -s -X POST -H "Authorization: token $TOKEN" \
 
 示例：
 ```bash
+# Linux/macOS
 python3 scripts/gh-api.py user -f login
 python3 scripts/gh-api.py repos/owner/repo/issues -p -c
 python3 scripts/gh-api.py -X PATCH -d '{"state":"closed"}' repos/owner/repo/issues/1
 ```
 
+Windows 直接调用 Python 后端时：
+```powershell
+py -3 scripts/gh-api.py user -f login
+py -3 scripts/gh-api.py repos/owner/repo/issues -p -c
+py -3 scripts/gh-api.py -X PATCH -d '{"state":"closed"}' repos/owner/repo/issues/1
+```
+
 ## 常用 API 端点
 
 - `user` — 认证用户资料

scripts/gh-api.py

@@ -12,6 +12,18 @@
 import urllib.request
 
 
+def _install_proxy_handler():
+    """Install urllib's standard proxy handler when proxy env vars are set."""
+    proxies = urllib.request.getproxies()
+    if proxies:
+        handler = urllib.request.ProxyHandler(proxies)
+        opener = urllib.request.build_opener(handler)
+        urllib.request.install_opener(opener)
+
+
+_install_proxy_handler()
+
+
 def get_token():
     """Get token from gh CLI, environment, or fallback files."""
     try:

scripts/linux/gh-api.py

@@ -12,6 +12,18 @@
 import urllib.request
 
 
+def _install_proxy_handler():
+    """Install urllib's standard proxy handler when proxy env vars are set."""
+    proxies = urllib.request.getproxies()
+    if proxies:
+        handler = urllib.request.ProxyHandler(proxies)
+        opener = urllib.request.build_opener(handler)
+        urllib.request.install_opener(opener)
+
+
+_install_proxy_handler()
+
+
 def get_token():
     """Get token from gh CLI, environment, or fallback files."""
     try:

scripts/windows/_common.ps1

@@ -73,29 +73,36 @@ function Invoke-GitHubApi {
     }
 
     # Pre-flight: verify Python exists and meets version requirement.
-    # Note: Get-Command may still find the Microsoft Store shim on PATH.
-    # The actual shim rejection happens in the version-regex check below.
-    $pythonCmd = Get-Command python -ErrorAction SilentlyContinue
-    if (-not $pythonCmd) {
-        Write-Host "[github-ops ERROR] Python interpreter not found." -ForegroundColor Red
-        Write-Host "  This skill requires Python 3.8+ on Windows." -ForegroundColor Yellow
+    # On Windows, use the Python Launcher with an explicit Python 3 selector.
+    # Bare 'py' can be configured to launch Python 2 via py.ini/PY_PYTHON.
+    $candidates = @(
+        [pscustomobject]@{ Command = "py"; Args = @("-3"); Display = "py -3" },
+        [pscustomobject]@{ Command = "python"; Args = @(); Display = "python" }
+    )
+    $script:PythonExe = $null
+    $script:PythonArgs = @()
+    foreach ($c in $candidates) {
+        $cmd = Get-Command $c.Command -ErrorAction SilentlyContinue
+        if (-not $cmd) { continue }
+        $candidateArgs = @($c.Args)
+        $verOutput = & $cmd.Source @candidateArgs --version 2>&1
+        if ($verOutput -notmatch "Python (\d+)\.(\d+)") { continue }
+        $major = [int]$matches[1]
+        $minor = [int]$matches[2]
+        if ($major -gt 3 -or ($major -eq 3 -and $minor -ge 7)) {
+            $script:PythonExe = $cmd.Source
+            $script:PythonArgs = $candidateArgs
+            break
+        }
+    }
+    if (-not $script:PythonExe) {
+        Write-Host "[github-ops ERROR] Python 3.7+ interpreter not found." -ForegroundColor Red
+        Write-Host "  Tried: $(($candidates | ForEach-Object { $_.Display }) -join ', ')" -ForegroundColor Yellow
         Write-Host "  Install: winget install Python.Python.3" -ForegroundColor Cyan
         Write-Host "  Or download from: https://python.org/downloads/" -ForegroundColor Cyan
         exit 127
     }
 
-    $verOutput = & python --version 2>&1
-    if ($verOutput -notmatch "Python (\d+)\.(\d+)") {
-        Write-Host "[github-ops ERROR] Unable to determine Python version: $verOutput" -ForegroundColor Red
-        exit 1
-    }
-    $major = [int]$matches[1]
-    $minor = [int]$matches[2]
-    if ($major -lt 3 -or ($major -eq 3 -and $minor -lt 8)) {
-        Write-Host "[github-ops ERROR] Python $major.$minor is too old. Python 3.8+ required." -ForegroundColor Red
-        exit 1
-    }
-
     # Pre-flight: resolve GitHub token and inject into environment so Python
     # backend does not need to shell out to gh CLI again.
     $token = Get-GitHubToken
@@ -108,6 +115,17 @@ function Invoke-GitHubApi {
     if ($Compact) { $pyArgs += "-c" }
     if ($Field) { foreach ($f in $Field) { $pyArgs += @("-f", $f) } }
 
-    & python $ApiScript @pyArgs
+    $backendArgs = @($script:PythonArgs) + @($ApiScript) + $pyArgs
+    & $script:PythonExe @backendArgs
     exit $LASTEXITCODE
 }
+
+function Write-Utf8NoBomFile {
+    param(
+        [Parameter(Mandatory)][string]$Path,
+        [Parameter(Mandatory)][string]$Value
+    )
+
+    $encoding = New-Object System.Text.UTF8Encoding($false)
+    [System.IO.File]::WriteAllText($Path, $Value, $encoding)
+}

scripts/windows/gh-issue.ps1

@@ -39,7 +39,7 @@ switch ($Command) {
         $payload = @{ title = $title }
         if ($body) { $payload.body = $body }
         $tmpFile = [System.IO.Path]::GetTempFileName()
-        $payload | ConvertTo-Json -Compress -Depth 10 | Set-Content -Path $tmpFile -Encoding utf8NoBOM -NoNewline
+        Write-Utf8NoBomFile -Path $tmpFile -Value ($payload | ConvertTo-Json -Compress -Depth 10)
         try {
             Invoke-GitHubApi "repos/$Repo/issues" -Method POST -Data "@$tmpFile"
         } finally {

scripts/windows/gh-pr.ps1

@@ -41,7 +41,7 @@ switch ($Command) {
         $payload = @{ title = $title; head = $head; base = $base }
         if ($body) { $payload.body = $body }
         $tmpFile = [System.IO.Path]::GetTempFileName()
-        $payload | ConvertTo-Json -Compress -Depth 10 | Set-Content -Path $tmpFile -Encoding utf8NoBOM -NoNewline
+        Write-Utf8NoBomFile -Path $tmpFile -Value ($payload | ConvertTo-Json -Compress -Depth 10)
         try {
             Invoke-GitHubApi "repos/$Repo/pulls" -Method POST -Data "@$tmpFile"
         } finally {