diff --git a/scripts/bootstrap.sh b/scripts/bootstrap.sh
index 059497f..a3f3af5 100644
--- a/scripts/bootstrap.sh
+++ b/scripts/bootstrap.sh
@@ -23,6 +23,15 @@ log()  { echo -e "${GREEN}[+]${NC} $*"; }
 warn() { echo -e "${YELLOW}[!]${NC} $*"; }
 err()  { echo -e "${RED}[!]${NC} $*" >&2; exit 1; }
 
+# curl | bash 时 stdin 是脚本管道，交互必须从终端读
+_tty_read() {
+  if [[ -r /dev/tty ]]; then
+    read -r "$@" </dev/tty
+  else
+    read -r "$@"
+  fi
+}
+
 usage() {
   cat <<'EOF'
 用法:
@@ -129,10 +138,10 @@ prompt_if_empty() {
   fi
 
   if [[ "$secret" == "1" ]]; then
-    read -r -s -p "$prompt: " value
+    _tty_read -s -p "$prompt: " value
     echo ""
   else
-    read -r -p "$prompt: " value
+    _tty_read -p "$prompt: " value
   fi
 
   if [[ -z "$value" && -n "$default" ]]; then
@@ -148,14 +157,14 @@ generate_password() {
 
 write_env_file() {
   local env_file="$INSTALL_DIR/.env"
-  cat > "$env_file" <<EOF
-# 由 bootstrap.sh 自动生成
-VPS_IP=${VPS_IP}
-DOMAIN=${DOMAIN}
-ACME_EMAIL=${ACME_EMAIL}
-PANEL_USERNAME=${PANEL_USERNAME}
-PANEL_PASSWORD=${PANEL_PASSWORD}
-EOF
+  {
+    echo "# 由 bootstrap.sh 自动生成"
+    printf 'VPS_IP=%s\n' "$VPS_IP"
+    printf 'DOMAIN=%s\n' "$DOMAIN"
+    printf 'ACME_EMAIL=%s\n' "$ACME_EMAIL"
+    printf 'PANEL_USERNAME=%s\n' "$PANEL_USERNAME"
+    printf 'PANEL_PASSWORD=%s\n' "$PANEL_PASSWORD"
+  } > "$env_file"
   chmod 600 "$env_file"
 }
 
@@ -182,7 +191,7 @@ confirm_or_abort() {
   echo "  用户名:   $PANEL_USERNAME"
   echo "  密码:     ${PANEL_PASSWORD:0:2}****** (${#PANEL_PASSWORD} 位)"
   echo ""
-  read -r -p "确认开始部署？(Y/n): " answer
+  _tty_read -p "确认开始部署？(Y/n): " answer
   case "${answer:-Y}" in
     Y|y|yes|YES) ;;
     *) err "已取消" ;;
@@ -195,7 +204,7 @@ check_existing_install() {
 
   warn "检测到已有部署（$env_file）"
   local answer=""
-  read -r -p "是否重新部署？将覆盖 .env 并重新安装 (y/N): " answer
+  _tty_read -p "是否重新部署？将覆盖 .env 并重新安装 (y/N): " answer
   case "${answer:-N}" in
     y|Y|yes|YES) ;;
     *) err "已取消。若要更新代码请: cd $INSTALL_DIR && git pull" ;;
@@ -245,6 +254,7 @@ print_success() {
 }
 
 # ── 参数解析 ──
+_CLI_ARGS=("$@")
 DOMAIN=""
 ACME_EMAIL=""
 PANEL_USERNAME=""
@@ -268,7 +278,7 @@ check_os
 
 # curl | bash 时先 clone，再用仓库内脚本继续
 ensure_repo
-reexec_from_repo "$@"
+reexec_from_repo "${_CLI_ARGS[@]}"
 
 print_banner
 
@@ -289,7 +299,7 @@ valid_email "$ACME_EMAIL" || err "邮箱格式无效: $ACME_EMAIL"
 [[ -n "$PANEL_USERNAME" ]] || err "用户名不能为空"
 
 if [[ -z "$PANEL_PASSWORD" ]]; then
-  read -r -s -p "面板密码 (留空自动生成): " PANEL_PASSWORD
+  _tty_read -s -p "面板密码 (留空自动生成): " PANEL_PASSWORD
   echo ""
 fi
 if [[ -z "$PANEL_PASSWORD" ]]; then
@@ -304,7 +314,7 @@ fi
 if [[ "$RESOLVED_IP" != "$VPS_IP" ]]; then
   warn "域名 $DOMAIN 解析为 $RESOLVED_IP，本机公网 IP 为 $VPS_IP"
   if [[ "$ASSUME_YES" -eq 0 ]]; then
-    read -r -p "DNS 可能未生效，继续？(y/N): " dns_ok
+    _tty_read -p "DNS 可能未生效，继续？(y/N): " dns_ok
     case "${dns_ok:-N}" in
       y|Y|yes|YES) ;;
       *) err "请先修正 DNS 后重试" ;;
diff --git a/scripts/install.sh b/scripts/install.sh
index b50fd37..49fdd81 100644
--- a/scripts/install.sh
+++ b/scripts/install.sh
@@ -168,7 +168,8 @@ bash "$ROOT_DIR/scripts/enable-panel-https.sh"
 rm -f /etc/nginx/sites-enabled/panel /etc/nginx/sites-available/panel
 
 log "安装 Python 面板依赖 ..."
-python3 -m venv "$ROOT_DIR/panel/venv"
+python3 -m venv --clear "$ROOT_DIR/panel/venv" 2>/dev/null \
+  || { rm -rf "$ROOT_DIR/panel/venv"; python3 -m venv "$ROOT_DIR/panel/venv"; }
 "$ROOT_DIR/panel/venv/bin/pip" install -q --upgrade pip
 "$ROOT_DIR/panel/venv/bin/pip" install -q -r "$ROOT_DIR/panel/requirements.txt"
 "$ROOT_DIR/panel/venv/bin/python" -c "import flask" \