Add Windows installation scripts

- Add install.ps1 (PowerShell one-liner)
- Add install.bat (Batch script for double-click)
- Update README.md with Windows instructions

Co-Authored-By: Claude <noreply@anthropic.com>

install.ps1

@@ -0,0 +1,78 @@
+# Claude Code Skills 安装脚本 (Windows)
+# 用法: irm https://git.let5see.xyz/let5see/skills/raw/main/install.ps1 | iex
+
+$ErrorActionPreference = "Stop"
+
+$RepoUrl = "https://git.let5see.xyz/let5see/skills.git"
+$TempDir = Join-Path $env:TEMP "skills-install-$(Get-Random)"
+$SkillsDir = Join-Path $env:USERPROFILE ".claude\skills"
+
+Write-Host "🚀 正在安装 Claude Code Skills..." -ForegroundColor Green
+Write-Host ""
+
+# 检查 git 是否安装
+Write-Host "🔍 检查 Git..." -ForegroundColor Yellow
+try {
+    $null = git --version
+    Write-Host "  ✓ Git 已安装" -ForegroundColor Green
+} catch {
+    Write-Host "  ✗ 未找到 Git，请先安装 Git: https://git-scm.com/download/win" -ForegroundColor Red
+    exit 1
+}
+
+# 创建临时目录
+Write-Host "📦 下载 skills..." -ForegroundColor Yellow
+New-Item -ItemType Directory -Path $TempDir -Force | Out-Null
+
+# 克隆仓库
+try {
+    git clone "$RepoUrl" "$TempDir" --depth 1 --quiet
+    Write-Host "  ✓ 下载完成" -ForegroundColor Green
+} catch {
+    Write-Host "  ✗ 下载失败: $_" -ForegroundColor Red
+    exit 1
+}
+
+# 确保 skills 目录存在
+New-Item -ItemType Directory -Path $SkillsDir -Force | Out-Null
+
+# 复制所有 skills
+Write-Host "📋 安装 skills..." -ForegroundColor Yellow
+
+$skillDirs = Get-ChildItem -Path $TempDir -Directory
+$installedCount = 0
+
+foreach ($skillDir in $skillDirs) {
+    $skillName = $skillDir.Name
+    $skillMd = Join-Path $skillDir.FullName "SKILL.md"
+
+    if (Test-Path $skillMd) {
+        $destPath = Join-Path $SkillsDir $skillName
+
+        # 如果已存在，先删除
+        if (Test-Path $destPath) {
+            Remove-Item -Recurse -Force $destPath
+        }
+
+        Copy-Item -Recurse -Force $skillDir.FullName $destPath
+        Write-Host "  ✓ $skillName" -ForegroundColor Green
+        $installedCount++
+    } else {
+        Write-Host "  ⚠ 跳过 $skillName (缺少 SKILL.md)" -ForegroundColor Yellow
+    }
+}
+
+# 清理临时文件
+Remove-Item -Recurse -Force $TempDir
+
+Write-Host ""
+Write-Host "✅ 安装完成！" -ForegroundColor Green
+Write-Host ""
+Write-Host "已安装 $installedCount 个 skills:" -ForegroundColor Cyan
+
+Get-ChildItem -Path $SkillsDir -Directory | ForEach-Object {
+    Write-Host "  - $($_.Name)" -ForegroundColor White
+}
+
+Write-Host ""
+Write-Host "提示: 重启 Claude Code 以加载新的 skills" -ForegroundColor Yellow