diff --git a/auto-setup.ps1 b/auto-setup.ps1
index d15928d..d581602 100644
--- a/auto-setup.ps1
+++ b/auto-setup.ps1
@@ -604,6 +604,31 @@ foreach ($dep in $deps) {
     }
 }
 
+# ── bash PATH 自动修复 (Claude Code 的核心工具依赖 bash) ──
+# Git 默认只把 cmd\ 加 PATH (有 git.exe), 但 bash.exe 在 bin\ 目录
+if ((Test-Cmd "git") -and -not (Test-Cmd "bash")) {
+    $gitBinPaths = @(
+        "$env:ProgramFiles\Git\bin",
+        "${env:ProgramFiles(x86)}\Git\bin",
+        "D:\Git\bin",
+        "$env:LOCALAPPDATA\Programs\Git\bin"
+    )
+    $gitBin = $gitBinPaths | Where-Object { Test-Path (Join-Path $_ "bash.exe") } | Select-Object -First 1
+    if ($gitBin) {
+        # 加入用户 PATH (永久)
+        $userPath = [System.Environment]::GetEnvironmentVariable("Path", "User")
+        if ($userPath -notmatch [regex]::Escape($gitBin)) {
+            [System.Environment]::SetEnvironmentVariable("Path", "$userPath;$gitBin", "User")
+            $env:Path += ";$gitBin"
+            Log-OK "bash 已加入 PATH: $gitBin"
+        }
+    } else {
+        Log-Warn "Git 已安装但找不到 bash.exe (Claude Code Bash 工具可能不可用)"
+    }
+} elseif (Test-Cmd "bash") {
+    Log-OK "bash 已就绪"
+}
+
 # Claude Code 依赖 npm, 需要在 Node.js 安装后再检查
 if (-not (Test-Cmd "claude") -and (Test-Cmd "npm")) {
     Log-Info "安装 Claude Code..."