diff --git a/install.ps1 b/install.ps1
index d81a628..3e5a7cd 100644
--- a/install.ps1
+++ b/install.ps1
@@ -172,53 +172,57 @@ if (-not $StartOnly) {
         if ($isGit) {
             Write-Host "  已有仓库，执行 git pull..."
             Push-Location $ClaudeTarget
+            $prevEAP = $ErrorActionPreference
+            $ErrorActionPreference = "Continue"
             try {
-                # stash 本地修改，防止 rebase 冲突
-                $stashOutput = git stash 2>&1
-                $hasStash = $stashOutput -notmatch "No local changes"
+                git stash 2>&1 | Out-Null
                 git pull --rebase 2>&1 | ForEach-Object { Write-Host "  $_" }
-                if ($hasStash) {
-                    git stash pop 2>&1 | ForEach-Object { Write-Host "  $_" }
-                }
+                git stash pop 2>&1 | Out-Null
             }
             catch {
                 Write-Host "  [WARN] git pull 失败: $_" -ForegroundColor Yellow
                 Write-Host "  使用本地现有版本继续" -ForegroundColor Yellow
             }
-            finally { Pop-Location }
+            finally {
+                $ErrorActionPreference = $prevEAP
+                Pop-Location
+            }
         }
         else {
             # 安全克隆: 先克隆到临时目录，成功后再替换
             Write-Host "  备份现有 .claude/ 并克隆..."
             $tempClone = "$ClaudeTarget.bw-clone-temp"
-            try {
-                if (Test-Path $tempClone) { Remove-Item $tempClone -Recurse -Force }
+            if (Test-Path $tempClone) { Remove-Item $tempClone -Recurse -Force }
+                $prevEAP = $ErrorActionPreference
+                $ErrorActionPreference = "Continue"
                 git clone --depth 1 $GitUrl $tempClone 2>&1 | ForEach-Object { Write-Host "  $_" }
+                $cloneExit = $LASTEXITCODE
+                $ErrorActionPreference = $prevEAP
+
+                if ($cloneExit -ne 0 -or -not (Test-Path (Join-Path $tempClone "CLAUDE.md"))) {
+                    Write-Host "  [ERROR] 克隆失败 (exit=$cloneExit)" -ForegroundColor Red
+                    if (Test-Path $tempClone) { Remove-Item $tempClone -Recurse -Force -ErrorAction SilentlyContinue }
+                    Write-Host "  原始 .claude/ 未被修改" -ForegroundColor Yellow
+                    exit 1
+                }
 
                 # 克隆成功，执行替换
                 if (Test-Path $BackupPath) { Remove-Item $BackupPath -Recurse -Force }
                 Rename-Item $ClaudeTarget $BackupPath
                 Rename-Item $tempClone $ClaudeTarget
                 Write-Host "  [OK] 克隆完成，原始配置已备份到 .claude.bw-backup/" -ForegroundColor Green
-            }
-            catch {
-                Write-Host "  [ERROR] 克隆失败: $_" -ForegroundColor Red
-                if (Test-Path $tempClone) { Remove-Item $tempClone -Recurse -Force -ErrorAction SilentlyContinue }
-                Write-Host "  原始 .claude/ 未被修改" -ForegroundColor Yellow
-                exit 1
-            }
         }
     }
     else {
         Write-Host "  首次安装，克隆仓库..."
-        try {
+        $prevEAP = $ErrorActionPreference
+            $ErrorActionPreference = "Continue"
             git clone --depth 1 $GitUrl $ClaudeTarget 2>&1 | ForEach-Object { Write-Host "  $_" }
-            if (-not (Test-Path (Join-Path $ClaudeTarget "CLAUDE.md"))) {
-                throw "克隆完成但缺少 CLAUDE.md"
-            }
-        }
-        catch {
-            Write-Host "  [ERROR] 克隆失败: $_" -ForegroundColor Red
+            $cloneExit = $LASTEXITCODE
+            $ErrorActionPreference = $prevEAP
+
+            if ($cloneExit -ne 0 -or -not (Test-Path (Join-Path $ClaudeTarget "CLAUDE.md"))) {
+            Write-Host "  [ERROR] 克隆失败 (exit=$cloneExit)" -ForegroundColor Red
             Write-Host ""
             Write-Host "  可能原因:" -ForegroundColor Yellow
             Write-Host "    - Gitea 服务不可达 (检查 https://code.letcareme.com)" -ForegroundColor Yellow
@@ -230,7 +234,7 @@ if (-not $StartOnly) {
             exit 1
         }
     }
-}
+    }
 else {
     Write-Host "`n[2/6] StartOnly 模式，跳过同步" -ForegroundColor Gray
 }