diff --git a/scripts/install.sh b/scripts/install.sh
index a1ba1cc..37179bb 100644
--- a/scripts/install.sh
+++ b/scripts/install.sh
@@ -3,6 +3,7 @@
 # 用法：
 #   curl -fsSL https://git.bz121.com/dekun/LocalNav/raw/main/scripts/install.sh | bash
 #   bash install.sh
+#   curl -fsSL .../install.sh | bash -s -- install -y
 set -euo pipefail
 
 DEFAULT_REPO="https://git.bz121.com/dekun/LocalNav.git"
@@ -15,20 +16,42 @@ need_cmd() {
   }
 }
 
+run_navctl() {
+  local navctl_py="$1"
+  shift
+  # curl | bash 时 stdin 是管道，无法交互；改从终端设备读取
+  if [ ! -t 0 ]; then
+    if [ ! -r /dev/tty ]; then
+      echo "[FAIL] 当前为非交互环境且无法打开 /dev/tty" >&2
+      echo "请改用: curl -fsSL .../install.sh -o install.sh && bash install.sh" >&2
+      echo "或非交互安装: curl -fsSL .../install.sh | bash -s -- install -y" >&2
+      exit 1
+    fi
+    exec python3 "$navctl_py" "$@" </dev/tty
+  fi
+  exec python3 "$navctl_py" "$@"
+}
+
+download_and_run() {
+  local tmp_dir
+  tmp_dir="$(mktemp -d)"
+  trap 'rm -rf "$tmp_dir"' EXIT
+  echo "[OK] 正在下载部署管理脚本..."
+  curl -fsSL "${RAW_BASE}/navctl.py" -o "${tmp_dir}/navctl.py"
+  curl -fsSL "${RAW_BASE}/nav_common.py" -o "${tmp_dir}/nav_common.py"
+  export PYTHONPATH="${tmp_dir}:${PYTHONPATH:-}"
+  run_navctl "${tmp_dir}/navctl.py" "$@"
+}
+
 need_cmd python3
 
-SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" 2>/dev/null && pwd || true)"
-NAVCTL_PY="${SCRIPT_DIR}/navctl.py"
-
-if [ ! -f "$NAVCTL_PY" ]; then
-  TMP_DIR="$(mktemp -d)"
-  trap 'rm -rf "$TMP_DIR"' EXIT
-  echo "[OK] 正在下载部署管理脚本..."
-  curl -fsSL "${RAW_BASE}/navctl.py" -o "${TMP_DIR}/navctl.py"
-  curl -fsSL "${RAW_BASE}/nav_common.py" -o "${TMP_DIR}/nav_common.py"
-  export PYTHONPATH="${TMP_DIR}:${PYTHONPATH:-}"
-  exec python3 "${TMP_DIR}/navctl.py" "$@"
+# curl | bash 时 BASH_SOURCE 可能未设置；仅当脚本为真实文件时才走本地路径
+script_path="${BASH_SOURCE[0]:-}"
+if [[ -n "$script_path" && -f "$script_path" ]]; then
+  script_dir="$(cd "$(dirname "$script_path")" && pwd)"
+  if [[ -f "${script_dir}/navctl.py" ]]; then
+    run_navctl "${script_dir}/navctl.py" "$@"
+  fi
 fi
 
-cd "$(dirname "$NAVCTL_PY")"
-exec python3 "$NAVCTL_PY" "$@"
+download_and_run "$@"
diff --git a/scripts/navctl.py b/scripts/navctl.py
index 86db196..a2ec49e 100644
--- a/scripts/navctl.py
+++ b/scripts/navctl.py
@@ -41,12 +41,25 @@ def _fail(msg: str) -> None:
 
 
 def _pause() -> None:
+    if not sys.stdin.isatty():
+        return
     try:
         input("\n按回车返回菜单...")
     except (EOFError, KeyboardInterrupt):
         print()
 
 
+def _require_tty(action: str) -> None:
+    if sys.stdin.isatty():
+        return
+    print(f"[FAIL] 当前环境无法交互式{action}（stdin 不是终端）", file=sys.stderr)
+    print("请使用以下方式之一：", file=sys.stderr)
+    print("  bash scripts/install.sh", file=sys.stderr)
+    print("  python3 scripts/navctl.py install -y", file=sys.stderr)
+    print("  curl -fsSL .../install.sh | bash -s -- install -y", file=sys.stderr)
+    sys.exit(1)
+
+
 def prompt_value(label: str, default: str) -> str:
     try:
         raw = input(f"{label} [{default}]: ").strip()
@@ -118,6 +131,8 @@ def run_deploy(project_dir: Path, py_exe: str) -> None:
 
 
 def action_install(*, repo: str = "", dest: str = "", yes: bool = False) -> None:
+    if not yes:
+        _require_tty("安装")
     print()
     print("=" * 50)
     print("  一键部署安装")
@@ -168,6 +183,7 @@ def action_update(*, dest: str = "") -> None:
 
 
 def action_uninstall(*, dest: str = "") -> None:
+    _require_tty("卸载")
     print()
     print("=" * 50)
     print("  一键卸载")
@@ -249,6 +265,7 @@ def render_menu(project_dir: Path | None) -> None:
 
 
 def interactive_menu() -> None:
+    _require_tty("打开菜单")
     print(f"LocalNav 部署管理 · {platform.system()} {platform.release()}")
     while True:
         project_dir = resolve_project_dir()
@@ -259,6 +276,11 @@ def interactive_menu() -> None:
             print("\n再见。")
             return
 
+        if not choice:
+            _warn("请输入 0-3")
+            _pause()
+            continue
+
         if choice == "1":
             try:
                 action_install()