feat: add Windows 7 compatibility build using win7 target

.github/workflows/build.yml

@@ -205,6 +205,8 @@ jobs:
           GITHUB_EVENT_NAME: workflow_dispatch
         run: node scripts/update-version.mjs
       - name: Prepare
+        env:
+          LEGACY_BUILD: 'true'
         run: pnpm prepare --${{ matrix.arch }}
       - name: Build
         env:

scripts/prepare.mjs

@@ -332,11 +332,13 @@ function getSysproxyNodeName() {
     }
   })()
 
+  const isWin7Build = process.env.LEGACY_BUILD === 'true'
+
   switch (platform) {
     case 'win32':
-      if (arch === 'x64') return 'sysproxy.win32-x64-msvc.node'
+      if (arch === 'x64') return isWin7Build ? 'sysproxy.win32-x64-msvc-win7.node' : 'sysproxy.win32-x64-msvc.node'
       if (arch === 'arm64') return 'sysproxy.win32-arm64-msvc.node'
-      if (arch === 'ia32') return 'sysproxy.win32-ia32-msvc.node'
+      if (arch === 'ia32') return isWin7Build ? 'sysproxy.win32-ia32-msvc-win7.node' : 'sysproxy.win32-ia32-msvc.node'
       break
     case 'darwin':
       if (arch === 'x64') return 'sysproxy.darwin-x64.node'

src/native/sysproxy/index.js

@@ -1,11 +1,19 @@
 const { existsSync } = require('fs')
 const { join, dirname } = require('path')
+const os = require('os')
 
 const { platform, arch } = process
 
 let nativeBinding = null
 let loadError = null
 
+function isWindows7() {
+  if (platform !== 'win32') return false
+  const release = os.release()
+  // Windows 7 is NT 6.1
+  return release.startsWith('6.1')
+}
+
 function isMusl() {
   // 优先使用 process.report（Node.js 12+，最可靠）
   if (process.report && typeof process.report.getReport === 'function') {
@@ -23,10 +31,11 @@ function isMusl() {
 }
 
 function getBindingName() {
+  const win7 = isWindows7()
   switch (platform) {
     case 'win32':
-      if (arch === 'x64') return 'sysproxy.win32-x64-msvc.node'
+      if (arch === 'x64') return win7 ? 'sysproxy.win32-x64-msvc-win7.node' : 'sysproxy.win32-x64-msvc.node'
-      if (arch === 'ia32') return 'sysproxy.win32-ia32-msvc.node'
+      if (arch === 'ia32') return win7 ? 'sysproxy.win32-ia32-msvc-win7.node' : 'sysproxy.win32-ia32-msvc.node'
       if (arch === 'arm64') return 'sysproxy.win32-arm64-msvc.node'
       break
     case 'darwin':