fix: use user dir on Windows, detect pipe execution for one-click install

- Windows default: $env:USERPROFILE\hapi instead of C:\hapi
- PowerShell: detect iex/pipe execution ($PSCommandPath empty) to skip
  Read-Host prompt and enter quick install mode
- Bash: detect curl|bash pipe (! -t 0) to enter quick install mode
- This fixes scripts hanging on menu prompts when run via irm|iex
  or curl|bash

via [HAPI](https://hapi.run)

Co-Authored-By: HAPI <[email protected]>

scripts/install.ps1

@@ -97,11 +97,16 @@ function Write-Err  { param($msg) Write-Host "[ERR]  $msg" -ForegroundColor Red;
 # 设置安装目录
 # ─────────────────────────────────────────
 function Setup-InstallDir {
-    $defaultDir = "C:\hapi"
+    $defaultDir = Join-Path $env:USERPROFILE "hapi"
 
     if ($InstallDir) {
         $script:INSTALL_DIR = $InstallDir
+    } elseif (-not $PSCommandPath) {
+        # iex / 管道执行（如 irm | iex），自动使用默认值
+        $script:INSTALL_DIR = $defaultDir
+        Write-Info "自动使用默认目录: $defaultDir"
     } else {
+        # 文件执行，询问用户
         Write-Host ""
         Write-Info "请选择 HAPI 安装目录"
         Write-Host "  默认: $defaultDir"
@@ -1205,8 +1210,11 @@ function Run-QuickMode {
 # ─────────────────────────────────────────
 "" | Out-File $LOG_FILE
 
-# 如果带有旧版参数，进入快速模式
-if ($Upgrade -or $Force -or $Source -or $SkipHub -or $InstallDir) {
+# 检测是否是 iex / 管道执行（如 irm | iex）
+$isIexExecution = -not $PSCommandPath
+
+# 如果带有旧版参数，或是 iex 执行，进入快速模式
+if ($Upgrade -or $Force -or $Source -or $SkipHub -or $InstallDir -or $isIexExecution) {
     Write-Host ""
     Write-Host "╔══════════════════════════════════════════════════════════════════╗" -ForegroundColor White
     Write-Host "║           HAPI 快速模式                                          ║" -ForegroundColor White

scripts/install.sh

@@ -1503,8 +1503,8 @@ main() {
 
     : > "$LOG_FILE"
 
-    # 如果带有旧版参数，进入快速模式
-    if [[ "$UPGRADE_ONLY" == true || "$FORCE" == true || -n "$SOURCE" || "$SKIP_HUB" == true || -n "$INSTALL_DIR_ARG" ]]; then
+    # 如果带有旧版参数，或是管道执行（curl | bash），进入快速模式
+    if [[ "$UPGRADE_ONLY" == true || "$FORCE" == true || -n "$SOURCE" || "$SKIP_HUB" == true || -n "$INSTALL_DIR_ARG" || ! -t 0 ]]; then
         echo ""
         echo -e "${BOLD}╔══════════════════════════════════════════════════════════════════╗${NC}"
         echo -e "${BOLD}║${NC}           HAPI 快速模式                                          ${BOLD}║${NC}"